Commercial Contractors Archives

Steel Reinforcement Bars and their Properties in Concrete Structures

January 17, 2021Karri HillCommercial Contractors, Formwork Contractors

Also known as rebar, reinforcement in concrete is a procedure used to consolidate the strength of steel Commercial and that of concrete works. This ancient procedure is usually done to make concrete structure last much longer. Over the years this technique has evolved and changed the perspective of concrete structures in positive ways.

Benefits of Using Steel Reinforcement Bars on Concrete Structure

Steel reinforcement absorbs stressors by bonds with the concrete. This makes it strong enough to withstand loads without breaking down
Steel reinforcement makes concrete structures last for long
Steel reinforcement in concrete structure has increased tensile strength
They are gentle to the environment

This article puts all emphasis on the type of steel reinforcements that are widely used and recommended. Below is the commonly used steel reinforcement in concrete construction.

1. Hot Rolled Deformed Bars in Concrete Structure

This type of reinforcement is the most used in concrete construction. This is because of its ribs which have unique deformation. With 60000 psi tensile strength, the ribs help in the adherence in concrete.

2. Mild Steel Plain Bars in Concrete Structure

this type of steel reinforcement bar is different from the rest because it lucks the ribs that are found in other bars. This feature makes it perfect for small projects that have tight appropriations. Mild steel plain bars are used in concrete structures because they are much affordable. However, these bars have a tensile strength of 40000 psi which restricts it from sticking well with concrete.

3. Cold Worked Steel Bars in Concrete Structure

this type of reinforcement steel has a lot of similarities to Hot Rolled Deformed Bars. The difference is that this type of reinforced steel has to be rolled under room temperature. With the same tensile strength of 60000 psi, these bars are perfect for straightness modification. They are also good for small projects with a limited budget.

4. Prestressed Steel Bars in Concrete Structure

The best is usually saved for last. Prestressed steel bars are the best and are widely used because of its versatile nature. The tensile strength that they possess are tremendous, it ranges between 250,000 to 270,000 psi. They have tendons also called wires. The tendons vary from two to seven fibres. It works perfectly when stuck into concrete to build slabs and bridges.

Shortcomings of Steel Reinforcement Bars on Concrete Structures

The main reason why steel reinforcement bars are widely USD in the concrete construction industry is because of there ability to modify or improve the quality of concrete structures. However, this doesn’t mean that it doesn’t have its shortcomings. Below are some of the disadvantages that come along with steel reinforcement in concrete structures;

The moisture found in concrete can penetrate the bars and make them erode
Some of these steel reinforcement bars can be exorbitant to purchase
They are too heavy to handle
They can easily melt when exposed under high temperature

Bottom Line

You can never go wrong with Steel reinforcement bars. They are the best materials to use in concrete structures because you can have them converted or recycled as scrape in case of demolition.

Residential and Commercial Dincel Wall Installation Formwork System

January 2, 2021Karri HillCommercial Contractors, Formwork Contractors

Dincel wall is a permanent formwork system that is PVC based. It consists of a lightweight modular panel which clicks together by the use of patented joints. Once that is done, it is reinforced with steel and ready mixed concrete is filled in the walls.

When dincel walls are filled with concrete in formwork and concrete construction they become tough and durable with easy maintenance structure.

When dincel walls are installed, there’s the least excavation backfill and clearance as compared to the typical formwork whereby moulds are created for the pouring of concrete.

Dincel walls once installed, they do not need treatment, this is because they are waterproof and non-combustible. Panel joints can be finished by adding cladding for a shiny appearance.

The dincel walls use an interlocking method which gives it easy handling without the need for scaffolding. This will help in cutting down labour cost and also speeds up the construction process.

Uses of Dincel Walls in Formwork and Concrete Constructions

Dincel walls are constructed in variety to suit various formwork and concrete construction in both residential and commercial work operations. Some of these projects include,

Retaining walls
Facades
Swimming pool projects
Stairwells
Columns
Sea walls
Waterproof basements
Load-bearing walls

Benefits of Dincel Wall System in Formwork and Concrete Construction

Dincel products meet the required building codes and safety standards. These are achieved by working hand in hand with regulators and testing centres to ensure quality is attained.
During the curing process, dincel walls are said to achieve enough concrete strength. This is arrived at by minimising evaporation of moisture. They also avoid steel reinforcement because of the presence of impervious water barriers and build-in crack-control joints.
Dincel walls can be incorporated into a whole building design. This means from the deep excavation basement, they can be incorporated to lift shafts of up to 60 floors high.
Dincel panels are safe for handling and also gives installers substantial cost-effectiveness when using commercial concreters.

Advantages of Dincel Walling System in Formwork and Concrete Construction

Dincel walls are waterproof. The panels will not allow water to penetrate through the polymer skin.
Energy-saving. Dincel panels have insulating properties that contain the temperature inside the building.
Construction speed. Dincel walls require less labour and there’s no waiting time required for placement and finishes.
Dincel walls are constructed to endure any kind of weather as compared to traditional concrete.
With the dimension and accuracy of the polymer and panels, the end structure is precise and smooth.
Acoustic isolation. The walls constructed have proven to be noise barriers.
Dincel walls are ecologically sustainable products because of the raw materials which are sand, cement, lime and water.
Dincel polymer formwork Sydney in concrete construction does not contain toxic substances. Therefore they are not a health hazard even when disposed to the environment.

Conclusion

Dincel polymer formwork and concrete construction have gained popularity over the years with engineers In the forefront to satisfy their clients. This also helps the clients not to spend so much of their budget allocated to the structure.

Different Basement Excavation Techniques Experts Use on Formwork and Concrete Structures

December 20, 2020Karri HillCommercial Contractors, Formwork Contractors

Basement excavation is not a task that one can wake up in the morning and jump right into it. It is a crucial process that requires perfect planning and good tools or equipment to get the work done. In fact, it is best done by professionals. This means that one should have vast knowledge in excavation to perform the job. Basement excavation is purposely done to achieve a strong and durable foundation that your concrete or building can sit on safely.

It doesn’t matter whether the basement excavation is done on an already existing building or a new one, what matters is the technique used in the process. You are about to discover different types of techniques professionals use in basement excavation.

1. The Full OpenCut Technique in Concrete Construction

This technique is further categorised into two. They include;

The slope technique
The cantilever technique

About the slope technique, is the easiest and cheapest way to excavate a basement in concrete construction. No additional support is needed to hold the walls of the foundation because of the sloppy sides. However, the situation is not the same as the cantilever technique. Here more walls are needed to prevent the sides from collapsing while excavating. Even though it is more exorbitant than the slope technique, the cantilever is more eligible because of the ability to excavate deeper.

2. The Bracing Technique in Concrete Construction

Straight and horizontal struts are usually installed during this type of technique. The installation is normally done in front of the walls. The struts are responsible for working against the pressure exerted on the wall. This technique the bracing requires post from all the angles, struts and walls. The pressure is directed to the trenches via the walls.

The work of the angles on these braces is to effectively work on the span without hurting the struts.

3. The Anchored Technique in Concrete Construction

The idea here is usually to install anchors to respond to the pressure that arises from the earth. The anchor act as a shield by protecting the structure from the pressure above. This is how the system works on concrete structures, the pressure is usually transferred to the crown of the anchor. The anchor later transfers the weight to the walls.

For this technique to be successful, anchoring should be done into a soil that possesses strength. The stronger the components of the soil better.

4. The Island Technique in Concrete Construction

This technique is achieved by first excavating the centre of the basement. Later the material from the excavation is used to create the incline needed. For the process to be successful, struts are built between the layout and the supporting walls in concrete construction.

One feature that makes this technique one of the best is among the safest method to excavate basements.

Bottom Line

All the techniques in this article are perfect for basement excavation. Your choice will depend on your budget, needs, and timeframe. In Brisbane, it is recommended to seek advice from an expert in concrete construction just to be on the safer side.

ASF As Permanent Formwork in Construction

December 10, 2020Karri HillCommercial Contractors, Formwork Contractors

Construction is one of the fields that are rapidly growing due to the demand that s available. It’s for these reasons that room for innovation is established. Innovation in this field expands every day to be able to meet the need of all sorts of clientele.

Use of Formwork in Concrete Construction

Formwork is needed for any construction to be established. There are different types of formwork both permanent and temporary. Permanent formwork requires the use of concrete. This where concrete is poured onto the desired structure. The most common is the timber type. Whoever there are other methods used in the construction where permanent formwork is achieved. For example AFS

What ASF Stand for and Its Use in Concrete Construction

This terminology is mostly used in construction by architectural engineers. In full ASF stands for architectural framing system. This is a method in construction used to achieve permanent formwork.

The Use of ASF as an Alternate in Concrete Construction

ASF is mostly used in the construction of walls by the use of panels that are placed side by side to each other. These panels are ferried to a construction site and later on erected as walls to create any desired structure. This is a fast-growing tech that is being embraced across the globe when it comes to construction. Unlike concrete formwork, ASF only requires panels in erecting walls for required construction

Benefits of Using ASF in Permanent Formwork Construction

There’s the reduction of waste during construction; normally with other methods of construction, there is always a significant amount of waste seen during and even after construction. But, with ASF this problem is reduced with a high percentage since there’s no material needed to construct the panels at the site, the panels are ferried all ready for installation.
Use of manpower in the installation; it’s quite incredible as to how easy it is to install the panels. These works are usually done by simple men. No technology is needed. Two or three men can lift one panel according to their shapes and sizes
Very strong and durable concrete; the type of concrete construction used in this method is said to be very strong therefore enhancing its durability
It’s time-bound; the ASF method of permanent formwork construction is quite fast as compared to other methods therefore saves a lot of time and can be done within a specified amount of time. These quickens hand over processes of projects.
Easy and simple to install; there’s no need for high-end complicated technology used to install the panels. This makes it quite easy and simple to construct.

Conclusion

It’s quite obvious that the use of ASF in permanent formwork construction is by far one of the best methods in constructing permanent formwork. There is still room for the growth of other innovative ways to construct formwork permanently. However, this particular method should be embraced by engineers, architects, and builders.