One effort to reduce the density of concrete is to make a stable cavity in the concrete mixture

(One effort to reduce the density of concrete is to make a stable cavity in the concrete mixture)

What is Cellular Lightweight Concrete

Cellular Lightweight Concrete is a brick that has a density lighter than a brick in general. Lightweight brick has the primary raw material consisting of silica sand, lime, cement, water, plus foaming agent material, which is then treated with water vapor pressure. Unlike ordinary bricks, light brick weight can be adjusted as needed. In general, light brick density ranges from 600 to 1600kg/m3. Based on this, the advantage of using lightweight brick is that water absorbed by the pore when making lightweight bricks will provide additional water used for curing from inside the brick. A foaming agent is a concentrated solution of a surfactant material, which, when used, must be first dissolved in water. Meanwhile, Sikament NN is a superplasticizer with a large amount of water-reducing and accelerating concrete hardening. The use of Sikament NN is to reduce water in the concrete having an initial higher strength. The strength will increase by 40% when achieving a water reduction of 20% for the compressive strength of concrete at 28 days. Sikament NN can be used at a dose of 0.3% to 2.3% of the weight of cement, depending on the compressive strength to be planned. Other researchers mentioned that the influence of filler like fly ash and the particle size of the sand caused an improvement in the strength of foam concrete, and the replacement of sand with fly ash resulted in higher strength. The filler with a finer texture resulted in a higher ratio of strength to density. On the other hand, reported that the compressive strength of foamed concrete with Synthetic Surfactants (SS) is 11% and 43% higher than that of foamed concrete with Animal glue Surfactants (AS) and Plant Surfactants (PS), respectively.

 

One effort to reduce the density of concrete is to make a stable cavity in the concrete mixture.

Concrete cavities can be produced through gas or air bubbles. Therefore, this concrete mixture is called foam concrete. Commonly, foam concrete does not contain coarse aggregate but only contains material with very light materials, such as water and foam. Therefore, it can be considered relatively homogeneous when compared to conventional concrete. The index properties of foam concrete, such as density, depend on the microstructure and mixture composition and the treatment of the specimen. The principle of making Cellular Lightweight Concrete (CLC) is to make micro air cavities by adding foam in the mortar mass to reduce the weight value of the volume. The main advantage of CLC brick concrete is that the material is lightweight and easily found on the site, enabling economic cost savings. Meanwhile, the disadvantage of foam concrete is its porosity, which tends to reduce the strength of the material. The composition of cement and sand has an essential role in increasing the strength of light brick. However, the lower density of the concrete gives lower compressive strength of CLC brick. Therefore, it is necessary to know the index properties and percentage of the portion of cement and sand to get the optimal strength in the mixing concrete. The compressive strength test is one of the performances of lightweight brick to be measured. Compressive strength is the ability of lightweight brick to resist compressive forces in each unit of light brick surface area. Theoretically, light brick compressive strength is influenced by the strength of its components, namely cement paste, cavity volume, aggregate, and interface (interface relationship) between cement paste with aggregate. The study aims to improve the strength of CLC bricks with different compositions of the material and to find the index properties of the CLC bricks with the variable material components..

 

The right percentage of the foam concrete mixture can increase the compressive strength of the CLC.

The simple method for obtaining the optimal foam concrete strength is by making variations in the composition of the mixture of cement, sand, and foam. The right percentage of the foam concrete mixture can increase the compressive strength of the CLC. However, the results of compressive tests must meet the requirements of the National Standard of Indonesia. The study of foam concrete defined the composition of cement and sand as a 1:2 ratio. This is the composition of the material most often used for foam concrete. Based on the density of concrete, CLC brick concrete has a lighter volume weight than conventional concrete bricks; the CLC bricks are, therefore, more suitable to be used as non-structural elements, such as walls in multistorey buildings. Thus, the load received by structural elements can reduce the total mass of the structure, which causes the load to be smaller and makes the design lighter. The CLC bricks can be made using local materials, Woro sand, and Kwara sand. The study carried out a compressive strength test and tensile strength test of the CLC bricks. The results of denoted mixing concrete using the Kwara sand gave a compressive strength of 4.02 MPa 28 days after casting, while the Woro sand gave a compressive strength of 3 MPa. Based on the chemical composition of CLC brick, stated that hydrated lime produces Ca(OH)2, which will result in a higher volume of free lime. The presence of free lime can lead to the development of volume at the time of binding (setting time), which, ultimately, results in cracking and damage to cement paste and hardened concrete. Also, the presence of Ca(OH)2 can cause a weakening of the adherence to the concrete filler elements. The organic content in fine aggregates must also be measured. Too much organic fine aggregates cause a loss in the quality of CLC brick. On the other hand, presented an experimental study on the optimum amount of polypropylene fibers that can be used in lightweight, high-strength concrete..

 

Price of Concrete early strength

Concrete early strength particle size and purity will affect the product's Price, and the purchase volume can also affect the cost of Concrete early strength. A large amount of large amount will be lower. The Price of Concrete early strength is on our company's official website.

 

Concrete early strength supplier

Luoyang Tongrun Nano Technology Co. Ltd.  (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including Concrete early strength, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality concrete additives, please feel free to contact us and send an inquiry. (sales@cabr-concrete.com). We accept payment via Credit Card, T/T, West Union, and Paypal. TRUNNANO will ship the goods to customers overseas through FedEx, DHL, by air, or by sea.

(One effort to reduce the density of concrete is to make a stable cavity in the concrete mixture)