Introduction to Rice Husk Ash Concrete
Keywords
Rice husk ash concrete, ecological concrete, sponge city
Rice husk ash concrete is a low-cost and strong building material.
Rice husk ash is a by-product of the combustion of rice husks. The main component is amorphous silica. It is a new type of building material with good ecological effects.
Rice husks are burned to form rice husk ash, in which silica can be combined with calcium oxide, which can not only resist acidic environments but also be used as concrete admixtures. In particular, the high activity and pozzolanic properties of rice husk ash can improve the workability and firmness of cement.
Advantages of rice husk ash concrete
With the advancement of science and technology, the development and utilization of rice husk has developed rapidly at home and abroad, and the concept of rice husk ash concrete is also well known to everyone. As a low-cost green material, it can not only reduce environmental pollution, save the amount of clinker cement and concrete, but also become an important part of sustainable development materials by virtue of its high performance.
The early tensile strength of the concrete mixed with rice husk ash is high, and it has a certain resistance to shrinkage cracking, which can increase the strength, improve the interface structure of the aggregate cement stone and fill the capillary pores, and increase the compactness of the concrete. The strength is greatly improved, and the splitting tensile strength, bonding strength, axial compressive strength, static pressure elastic modulus, chloride ion penetration resistance, rust resistance and other properties have been significantly improved and improved.
Rice husk ash has a high specific surface area, rich void structure, and good active ingredients, which can play a good role in water storage. Therefore, rice husk ash is used as a raw material to make ecological concrete, which can be used in ecological projects such as embankment and slope protection where plants grow.
