Our Measures in Response to the Movement Control Order

Dear Client and Business Partners,

In recent days, COVID-19 has dominated our thoughts and conversations. We at Halfen Moment will do our part to prevent the spread of transmission and take care of our customers, co-workers and communities. Following the recently declared Movement Control Order to be imposed in Malaysia & Philippines, the management of Halfen Moment has implemented work from home arrangements for our colleagues during this period.

The arrangement is aimed at ensuring colleague safety while also retaining adequate capability to continue servicing client needs. Our colleagues working from home remain contactable via both email and mobile, and can also conduct meetings via video and teleconferencing facilities. This enables us to maintain the high level of quality and consistency that you have come to expect from Halfen Moment.

While all efforts are focused on maintaining business as usual, we seek your understanding and patience should there be unexpected delays arising from disruptions in the supply and service chain.

Halfen Moment Team has always been guided by our core values of Make It Happen, Ownership, Maintain A Smile, Embrace Change, Never Compromise and Teamwork, we will continue to pursue these values as we continue to single mindedly focus on serving you to the very best of our abilities, despite the challenging weeks and months ahead. 

Please reach out to your Halfen Moment representatives if you have any questions or concerns, or reach out our Hotlines at +6012-5249956 or +6012-5539956, or email us at info@halfen-moment.com

Rob Van Haaren
Managing Director
Halfen Moment Group

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Essentials Of Precast Lifting For Safety and Productivity

2 of the most challenging aspects of constructing with precast concrete are the lifting/handling and connections. In this section, we will deal with the dos and don’ts of lifting, moving and handling of precast concrete elements with regard to safety, productivity and cost-effectiveness.

This article will not cover topics such as installation or troubleshooting as those topics are already covered quite comprehensively by the individual suppliers in their literature. Instead, we will focus on the bigger picture issues that are preventing the industry from moving forwards

Traditional Methods

Still to this day, reinforcement U Bars and Post Tension Wires are still used as lifting points for precast concrete elements, but those using these types of lifting points do not understand the dangers that they are exposing the workers to. Most lifting designs do not have any built-in redundancy, so a failed lifting point will most often result in an element crashing down to the ground. Even if there are no casualties, a dropped element is often then scrapped as the damage resulting in a dropped element is too much to repair them.

The cost of using a proprietary lifting anchor is approx. 0.5% of the cost of a typical element and therefore can be considered as very cheap insurance against losing a piece of precast concrete. Not to mentions all the likely liquidated damages that could be incurred as a result.

The reason why rebars and post-tension wire are not suitable as lifting points is simply due to the fact that they are not designed for it. Both steels are designed to work in tension and although rebars can be bent, the ductility of the steel is always reduced after the bar is bent due to yielding in the extreme fibres of the steel. So much so, that there are discrete limits on the size of the radius that you are allowed to bend them to. Generally between 4d to 6d depending on the code and the diameter of the bar. Attaching a crane hook to a U Bar will result in the partially yielded bar to be further bent around a radius that is even small than those allowed in the rebar codes. Therefore the risk of failure increases significantly using either rebar or post-tensioning wire.

This failure was reported via the Confidential Reporting of Structural Safety (CROSS) website https://www.structural-safety.org/

There are some proprietary lifting systems available in the market that seem to call this suitability in to question but to understand it fully, you need to cut through the wire and look at the cross-section. The wire products sold for lifting have a 7 strand configuration, but the central core strand is made of a fibre core and not a steel core in the case of a post-tension wire. This allows the wire to be much more flexible and bend around a smaller radius than its steel-cored cousin.

2D Lifting

There are 2 very common ways of lifting 2-dimensional panels, namely, face lifting and edge lifting.

Face lifting is where a number of anchors are placed into the flat top of an element and the concrete is lifted in a flat position. This is commonly used for staircase landings, man-hole covers and floor units.

Edge lifting is where a number of anchors are placed along the thin edge of an element so that the concrete can be tilted up into a vertical position for storage and installation. This type is commonly used for shear walls, infill walls and façade panels.

The challenge with lifting and handling all precast components is the rigging required to attach the element to the crane but still allowing for the load to be equalised across all the anchors. Some real no-no’s for this would be if fixed-length chains or slings are used, or if you try and use a multiple of 3 anchors in any one lift, so 3, 6 and 9 anchors should only be used if absolutely necessary or with very advanced rigging to ensure the anchors are fully equalised.

Never Compromise On Safety!
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3D Lifting

As we have moved towards PPVCs and PBUs the challenges associated with lifting have changed and in many ways become much more complex.

Often the element being lifted have a number of boundary conditions that we need to respect such as wall thickness, concrete weight and centre of gravity.

One of the biggest challenges associated with the lifting of these 3-dimensional elements is the weight of the element due to the availability and range of cranes available on site. There are a number of precasters exploring lightweight aggregates or the use of fibre reinforcement to reduce the weight of the elements, but many prefer to simply use thinner and thinner walls. The industry seems to be settling on a 90mm thickness for a PPVC wall, so back to back elements can provide a 200mm thick finished wall by backfilling the remaining 20mm with a cementitious grout.

The wall thickness will often mean that we need to use a lot more of a smaller capacity anchor rather than just a few larger capacity anchors. This, in turn, makes the equalisation of the loads even more challenging and most precasters prefer to use fabricated lifting frames to assist with the equalisation.

However, as most architects prefer to have a few different geometries in their buildings, it means that one standard lifting frame gets used for a variety of different geometries. Providing the frame is well designed, this can be a good way of minimalizing the capital outlay for a project, but excessive out of plane lifting should be avoided at all costs as this can result in the thin concrete wall spalling away and causing damage to the concrete or, worse still, a failure of the lifting point. Therefore the lifting frame should be designed to be as closely aligned to the wall geometry as possible.

Another challenge for 3-dimensional shapes that needs to be considered is the relative position of the anchors to the centre of gravity (COG). Providing the centroid of all the lifting points coincides with the COG when viewed in plan, then the element will be lifted flat with no tilting. However, as each PPVC might be slightly different, it is not practical to do this 100% of the time and some slight lifting or rotation is deemed to be acceptable.

One thing to be avoided wherever is that the centroid of lifting is lower than the COG. There are a number of exceptions to this, but in general, the element will be much more unstable than it would be if the centroid of lifting was above the COG.

Lifting In Thin Elements

The thin walls do create a challenge for lifting as you are required to place lifting anchors together with any required supplementary rebar (an additional bar near to, but not in direct contact with the lifting anchor) or complementary rebar (additional bar in direct contact with, or passing through the lifting anchor) into a very think section whilst respecting concrete cover and avoiding the mesh.

For Singapore, using supplementary rebars is not favoured by professional engineers, with most of them preferring to use anchors with complementary rebar, but the problem of placement still exists. According to SS EN 1992-1-1 the covered required to ensure bond transfer is just 1x bar diameter, so we only need a cover of 13 or 16mm depending on the capacity of the anchor being used. This makes it easier to fit inside the wall and transfer the lifting stresses into the concrete via bond transfer using the development lengths defined in SS EN 1992-1-1 Clause 8.4. One common trait that has been adopted by some professional engineers and needs to be stopped is the insistence on the complementary bars being the full height of the PPVC and returned under the slab at the base. This consumes an additional 7m+ of steel per lifting anchor which results in unnecessary and additional cost and additional embodied CO2 into the element which is bad for the bank balance and the environment. For a PPVC with 8 lifting points is results in about 90kgs of additional material with a cost of more than $70 per element that could be eliminated.

Health & Safety

The final, but the most important, piece of the puzzle is health and safety. At the moment, their elements are placed into position using a crane and then we need operators to climb up to the top of the element (3m+) just to disconnect the clutches and hooks. There are a number of remote release systems available on the market that contractors and precasters alike could consider and significantly improve the productivity and safety of precast operations on site.


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Never Make Safety Vulnerable For Any Reasons

An alarming change to common practices in coupler length are sweeping across India.

Couplers, or Mechanical Splices as are they are also called, are becoming a common method for connecting reinforcing bars together. However, from what we can tell, the way that couplers work is still greatly misunderstood by the vast majority of the Structural Engineering Industry. Therefore, the majority of Structural Engineers happily take the lead of the various standards organisations around the world who have written standards to empirically determine the performance of a system, but this has led to 2 key problems that jeopardizes the structural integrity of our concrete structures.

The samples are prepared by the supplier of the system and are usually prepared and installed perfectly. For obvious reasons, this perfect installation is not always possible on site due to manufacturing tolerances and site conditions.

2. The global standards and certification bodies that exist today, are mainly focused on the initial proof of concept of a system rather than the on-going quality control. Even those bodies that have some element of on-going quality control do not simulate the on-site conditions.

In short, there is no “policing” of the quality control at site level.

For these reasons, most premium suppliers build in some additional robustness to allow for the issues that commonly occur on site, namely:

  • Imperfect thread lengths. There is a tolerance on the thread length that can easily result in the engagement of the 2 bars being 45% : 55% instead of the tested 50% : 50%.
  • Gaps between the rebars. In the case of prefabricated pile cages, it is impossible to have all the bars in exactly the same plane and as such a gap of up to 20mm between 2 bars could easily occur, again reducing the engagement of the thread.

As you can see, both of these will result in the same issue, that the engagement of the thread on the end of the rebar into the coupler will be compromised and a smaller engagement will occur. Thread length is defined to ensure that the amount of load transferred to each thread does not exceed the stripping capacity of that thread. If the stripping capacity is exceeded, then the failure mechanism will change to a stripping failure.

We therefore need to provide a sufficient safety factor against this that will also cover the typical onsite issues shown above.

In India, we have seen an alarming trend where people are marketing a “2D” coupler system where the length of the coupler has been reduced by about 20% to 2x bar diameter. It does pass all the necessary tests in the standard, but does not perform well when you try to mimic the onsite problems listed above. We are sure it is only a matter of time before similar products appear in other countries as people strive for cost reduction, but we need to be aware that in this case, cost reduction is directly reducing the safety if the system.

At Halfen Moment, we understand these issues and recently conducted some comparative tests and found that the 2D coupler strips with a bar gap of only 15mm, whereas the longer standard coupler that is marketed by premium suppliers continues to work properly well beyond this limit. This means that the total safety factor on the “2D” coupler is less than 20% even if the installation is performed perfectly.

Never Compromise On Safety!
Let Us Drop You A Call For Consultation. For Free.



Impact Of Coupler Strength With Reduced Embedment

• Gaps between the bars of greater than 15mm fail with the shorter coupler, but still pass with the HM coupler.

• 40mm coupler with a reduced engagement of just 19% will result in a failure using the shorter coupler.

• There is no factor of safety against failure of typical installation issues.

We at Halfen Moment are not comfortable with this reduction in total structural safety and strongly urge structural engineers to investigate these topics more thoroughly and ensure the future robustness of our built environment for future generations.


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4 Ways To Connect Precast Concrete Wall To Foundation Effortlessly

When considering the best options for your building project, the benefits of going with a concrete wall panel system are many. By choosing a concrete wall panel system, these features may provide advantages that can be enjoyed by owners, architects, engineers and contractors on site. The benefits include:

  • Energy efficiency
  • Environmental reliability
  • Aesthetically attractive
  • Minimal preservation
  • Speediness of construction
  • Onsite Productivity

To enjoy the benefits, we must make sure the connection between the precast elements and of the precast walls to foundation is robust enough to ensure the safety and integrity of the structure. Here are 4 main ways to connect precast wall panels to foundation.

Corrugated Duct

Casting Corrugated Duct into the precast element is the traditional method to connect precast walls to foundation. Corrugated duct is used as a hole former for a variety of precast and cast-in-situ concrete works. The hot dipped galvanized metal duct is strong and durable for casting into precast walls and then to be connected with rebars from the foundation.

Although duct has been a commonly used method for precast connections, one of the major disadvantages of duct application is the huge amount of grout needed to fill up the duct in order to secure the connection between the precast wall and foundation.

Eventually, this traditional method will increase the cost and time of the overall construction.

Corrugated Duct 1 Corrugated Duct 2 

Grout Coupler

Specifically for precast connections, Grout Coupler can be used for connecting precast walls, columns, beams either horizontally or vertically. The most popular connections used with Grout Coupler are:

  1. Precast concrete column to foundation connection
  2. Precast column to column connection
  3. Precast beam to column connection
  4. Precast wall to foundation connection
  5. Precast wall to wall connection

The rebars protruding from the foundation are simply inserted into the grout coupler, which has been casted in the precast wall. When pumped with Moment’s proprietary 100MPa grout, the grout coupler system is a bar break technology and is capable of carrying very high bar loads regardless of the rib profile on the reinforcing bar.

Although this is not the most popular application of grout coupler but the application of grout coupler for precast wall to foundation is still widely accepted in the market.

Grout Coupler 1 Grout Coupler 2Untitled design (1)

 

Precast Shoe

Mainly used for connecting precast column and foundation, Precast Shoe can also be used to connect precast wall panel to foundation. They are especially suitable for anchoring in flat structures such as the foundations or walls that have sufficiently large edge distance.

The advantage of this precast system with screw connection is the quick assembly. The connection is easy to adjust with a healthy tolerance and immediately loadable so that bracing is not required which results in less labour at site. However, they are not specifically designed for walls and therefore have a limitation on the wall thickness and thin walls cannot be connected using this type of product.

The system comprises of the precast shoe (cast into the precast wall) and the suitable anchor bolts (cast into the foundation) for the foundation base. Both elements are joined by load bearing nuts during assembly on site.

Column Shoe 1 Untitled design (2) Untitled design (4)

The Most Cost Efficient Way To Connect Precast Wall To Foundation : Wall Shoe

Specifically designed for precast wall to foundation connection, the Wall Shoe system provides a bolted type connection, also described as ‘dry joint’ or ‘mechanical connection’. This product can be used for connecting precast wall or elements, either horizontally or vertically including thin wall application down to as little as just 100mm thick.

The system consists of Wall Shoe casted into a wall section and Anchor Bolt on the foundation. When they come together, there is a generous tolerance to ensure that the relative accuracies of in-situ and precast concrete can be easily accommodated. The assembly can then be simply secured using a locking plate and high strength nut.

Compared to the 3 methods above, wall shoe has the most cost efficient design as it requires the least grout to secure the connection on the foundation, which leads to enormous time gain.

Wall Shoe 1 Wall Shoe 2 Untitled design (5)

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The Fastest Way to Connect Precast Wall to Foundation

Moment Wall Shoe system provides a bolted connection between precast concrete walls and foundations or two precast concrete walls.

The system consists of Wall Shoes and Anchor Bolts on the base. When they come together, the assembly is secured using a locking plate and high strength nut. Wall Shoes are cast into precast concrete walls, whereas Anchor Bolts are cast into foundations or other walls.

On site, the walls are erected on adjusted shim plates in the correct position and fixed to the Anchor Bolts with nuts and special washers as bolt connection. Precast concrete wall connections are finalized by grouting the recesses and joints underneath the wall.

Wall Shoe  Moment Wall Shoe

Example of Moment Wall Shoe application for precast wall

There are many benefits of using the Moment Wall Shoe System including high safety standards through connecting precast elements, shorter construction time and thus lower cost. In addition to these, below are the some of the key benefits:

1. Can be used for thin walls

This product can be used for wall thickness from 100mm. It will not risk the design of the wall while maintaining the safety and robustness of the building.

Moment Wall Shoe

2. Immediate load bearing

Moment Wall Shoe serves as a connecting elements inside bracing wall construction. Both the tensile force acting perpendicularly to the joint and the transverse forces in the longitudinal axis of the joint can be absorbed and transmitted. This solution offers the advantage of the fast, simple and safe connection of precast concrete elements by simply bolting them together.

Moment Wall Shoe

3. Minimal grout usage

After the wall have been installed and the nuts and washers are screw tightened, the connection is then ready for grouting. It should be grouted by following the instruction for grout mixing and it must be a non-shrinking type. The volume of the grout use for this system is lesser compared to the conventional method using corrugated duct and thus decreasing the overall cost and installation time.

Moment Wall Shoe

See How Easily You Can Connect Precast Wall To Foundation


1. The wall is installed on pre-levelled shim plates after being cast in the concrete.

Wall Shoe Installation 1

2. The nuts and washers are screwed into the foundation anchors and tightened.

Wall Shoe Installation 2

3. The connection is ready for grouting after placement and adjustment of the wall element to the foundation.

Wall Shoe Installation 3

4. The finalized connection after grouting has hardened.

Wall Shoe Installation 4
Wall Shoes are designed to withstand tension forces corresponding to the design values of resistances of Anchor Bolts. Both components are pre-designed so that the system have sufficient resistance against actions caused by external loads.

 

Create Effective Bolted Wall Connections Today.
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Gamuda IBS’ Way of Precast Wall To Wall Connection

Gamuda IBS is a well-known precast manufacturer in Malaysia. Being one of the key clients of Halfen Moment, Gamuda IBS has been collaborated with us, using our innovative building solutions in many of their prestigious projects. Moment Multi Wire Loop Box is one of the latest product being implemented for precast wall to wall connection.

 

Gamuda 1 Gamuda 2

With the ongoing close partnership with Gamuda IBS, Halfen Moment had the opportunity to conduct demonstrations at their precast yard to showcase the application of Multi Wire Loop Box for precast wall to wall connection. After rounds of testing based on different possible applications, Gamuda IBS engineers were satisfied and confident with Multi Wire Loop Box advantages as follows:

  1. The long multi wire loop box version creates a perfect alignment to wall panels, acts as a shear key and simplify the design of the formwork.
  2. The magnet option provides easy installation onto the formwork.
  3. Able to customize the number of wire loops and length of steel box to match the height of the wall.

In the own words of the Head of Technical of Gamuda, Thoo Hoi Hian, and Engineer Steven Goh Nai Jun, “I would highly recommend this wire loop box to other engineers. Not just because of the quality of the product but the easy installation which makes wall to wall connection 50% faster when compared to traditional method, helping us to save our labour and time cost.”

With the positive response received from Gamuda IBS, more drawings with Multi Wire Loop Box have already been incorporated into the precast design of their future projects.

Easy Installation Saving More Time & Cost

1. Multi Wire Loop Box is attached to the formwork using magnets before the panel is casted.

Gamuda 4.1 The Secret to Precast Wall Connection

2. After removing the formwork, the protective tape is removed, and the loop can be then be bent to the operating position.

Gamuda 5.1 Gamuda 5.2

3. The wire loops are bent out and straightened with a hammer claw.

Gamuda 6.1 Gamuda 6.2

4. Lastly, insert the reinforcement bar and concrete grout is poured into the joint shown below.

Gamuda 7.1The Secret to Precast Wall Connection

Still Using The Traditional Way To Connect Walls?
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Global Partnership Renewal With Samsung C&T

Upon our recent Global Partnership Renewal with Samsung C&T Corporation on September 2019, Halfen Moment has been invited to visit Samsung’s office in Seoul, South Korea.

Led by Halfen Moment Singapore Managing Director, Gary Connah, the visit further promotes our new innovative building products for future collaboration in 2020. 

Halfen Moment x Samsung C&T

Halfen Moment x Samsung C&T

Over the years, Samsung C&T has successfully clinched many iconic projects; Biopolis Science Hub Phase 1, One Marina Boulevard, Harbourfront Twin Towers, Deep Tunnel Sewage System T-04, Changi East Reclamation, and Power Seraya Combined Cycled Power Plants.

Halfen Moment x Samsung C&T
The representative from Samsung C&T visited Halfen Moment office in Singapore last year to officially signed the Global Partnership Agreement. By collaborating with one of the biggest players in Asia, we can build a brighter and promising future in the construction industry.

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The Secret Of Precast Wall To Wall Connection

Construction of precast walls are very rigid since the element are inherently stiff to begin with. Therefore, it is important to detail the connections in such a way to ensure robustness in the event of a natural disaster such as earthquake and absorb its energy to avoid complete collapse.

The Secret to Precast Wall Connection

There are a number of challenges when connecting precast walls, namely:

1. Connections are wet, so require temporary bracing.
2. Installation time can be lengthy, so crane time is not optimised.
3. Connecting of both vertical and horizontal rebar connections is practically impossible due to the stiffness of the rebars.

At Halfen Moment, we have a solution for all of these challenges, but here we would like to address the third one as it is arguably the most important fundamental.

So What is Moment Wire Loop Box?


Wire Loop Box are used for connecting precast wall to wall or to a column. After casting to the formwork, the precaster will just need to remove the tape and release the loop into the operating position. A vertical rebar (sometimes called a trimmer or cottering bar) is installed into the joint through the wire loops. Lastly, cementitious grout is poured or pumped into the joint.

The Secret to Precast Wall Connection

There are 3 types of Moment Wire Loop Box – Multi, Double and Single Loop Box.

The Secret to Precast Wall Connection

Wire loop boxes are installed to the formwork according to the spacing specified by the designer, before the panel is cast.

The Secret to Precast Wall Connection The Secret to Precast Wall Connection

A vertical rebar is installed into a joint through the wire loops of both precast panels before grouting.

Key Advantages


Fully compliant with EN1992-1-1 (Eurocode 2), Moment Wire Loop Box has been tested in accredited test labs to simulate performance in various application, transmitting forces from three directions (perpendicular, parallel and transverse load).

Below are the key advantages of wire loop box when compared with the traditional method of connecting precast walls:

  1. Flexible installation method for seamless connection between precast wall
  2. Reduces the total installation time by 50% with less labour
  3. Eliminates the clashes between U-bars from the traditional method
  4. Customizable length of steel box and wire loops
  5. Easy installation of wire loop box to the formwork with the option of magnet

The Secret to Precast Wall Connection

Multi wire loop box acts as a shear key and simplify the design of the formwork.

The Secret to Precast Wall Connection

Making precast wall connection easier and faster

Key Features


Consists of high-strength, galvanized steel casing and wire loops, wire loop boxes connect precast walls in an efficient and time saving method. Below are the key features of wire loop box:

Galvanized Steel Box
A robust sheet-steel box and wire loops contain the plastic latch and wire loops

Plastic Latch
Specially designed plastic latch to secure the wire loops in position for good anchorage embedment for in concrete
9.png The Secret to Precast Wall Connection

Flexible wire loops
Galvanized wire loops transmit force into the concrete and connect 2 walls to each other. Loops can be bent out and straightened with a hammer claw, screwdriver or a nail.

The Secret to Precast Wall Connection   The Secret to Precast Wall Connection

 

Wire Loop Box Makes Wall Connection Easier.
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Proud Titanium Sponsor for SCI 2019

Halfen Moment is a proud titanium sponsor for Singapore Concrete Institute (SCI) 2019 held at Swissôtel The Stamford, Singapore. The annual event gathers multiple companies for a fun and enjoyable evening between Halfen Moment and all the affiliated guests.

SCI 1
Pre-dinner networking and product introduction session by Technical Manager, Mr KC Loh (left) and Halfen Moment Group Managing Director, Mr Rob Van Haaren (middle) with a guest.

SCI 2 SCI 3
SCI 2019 was officiated by the Director of HDB’s Centre of Excellence for Environmental Sustainability Research, Mr Tan Sze Tiong and welcoming speech by Halfen Moment Sales & Marketing Director, Ms June Ng.

The event was initiated with a speeches followed by a mini game, award presentation, stage games and magic show with aims to further connect representatives from all the companies present.

SCI 4

At Halfen Moment, we focus on building relationships, business, and community in the construction industry, upholding standards of excellence in the use of concrete and precast technology. To all the other entities, hope we can see each other in the next events and projects in 2020 and congratulation to all the committees for making the event a success.

Follow our social media (LinkedIn, Facebook, YouTube and Instagram) and stay tuned for more events and happenings from Halfen Moment.

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Innovative Shortcut For Precast Connections

1

Developer: Micron Technology
Client: JEKS Group
Product Supplied: Moment Grout Coupler

Project Description

Micron Technology’s new center of excellence for SSD Assembly and Test is located in Batu Kawan Industrial Park, Penang, Malaysia. This new facility development is located on a 52.6-acre site which represents an investment of US$356.6 million (RM1.5 billion) over five years.

The Problem: The conventional method of lapping long rebars according to Eurocode standards has caused inconveniences on site. Handling long lapped length of rebars protruding from precast beams and columns is very tedious. Not to mention that the long starter bars are very dangerous to be installed which has alarmed safety concern from the site management.

IMG-20191114-WA0010
Long rebar lap length caused long installation time on site along with safety concern

The Solution

After understanding the pain points of our client, instead of using the conventional method which involves corrugated duct and long lapping of rebars, Halfen Moment proposed the solution of using Moment Grout Coupler to connect precast beams & columns.

With the application of Moment Grout Coupler, our client were able to reduce 60 to 70% of the rebar lapping length with this rebar coupler system, saving more rebars and also reduce the installation time. Moreover, when the long rebars length were reduced significantly, site safety factor has been improved as well.

Besides, the advantage of Moment Grout Coupler as a transitional coupler gave more flexibility to our client as the rebar sizes varies from level to level on site. Lastly, the rough surface of the coupler’s body managed to provide a strong bonding between the coupler and the concrete.

IMG-20191115-WA0019
Moment Grout Coupler with precast elements before casting

The Result

Our client was very happy with the quality of the supplied Moment Grout Coupler, especially when barbreak system was achieved when testing was conducted. Overall, the usage of Moment Grout Coupler has make our client’s life much easier, not only to the precasters but also the contractors from Micron’s project. Nonetheless, the time saving from connecting precast beams and columns, has improved our client’s productivity, with less workers needed.

Micron Moment Grout Coupler 
Once filled with grout, bracing around the element can be removed after 3 days

 

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