Uses of Rice Husk Ash in Building Construction

April 21, 2020

Rice husk ash can be used as a substitute for Portland cement which reduces the cost of concrete and other use is that it can be used in production of high strength concrete.

There are many applications of rice husk ash in the construction such as high-performance concrete, insulation, green concrete, bathroom floors, industrial factory floorings, waterproofing and rehabilitation, and it is also used ceramic glaze and roofing shingles.

Applications of Rice Husk Ash in Building Constructions

Low cost building blocks

When low cost building is constructed, rice husk ash is used instead cement. As cement is expansive component of concrete and for low cost building it is not affordable to use so rice husk came in picture. It is demonstrated that, replacing 50% cement with rice husk ash would reduce cost of concrete by 25%.An Indonesian company has used mix proportion of 10% cement, 50% aggregate and 40% RHA plus water to produce blocks. The average strength of the blocks was 12MPa.

Refractory Bricks

It is used to produce refractory bricks due to its insulating properties. During production of lightweight porous product it acts as an organic filler.

Lightweight Construction Materials

Higher strength concrete with RHA allows lighter products to be produced such as hollow blocks with enhanced thermal insulation properties, which provide lighter walls for steel framed buildings. It provides to reduce cement consumption and aggregates.

Insulating Material

It is used as a loose insulant in dwellings, farm structures and cold storage plants.

Soil Improvement

Rice husk ash in combination with small quantity of cement can be used for shallow stabilization.

Steel Industry

It is also used in steel industry to manufacture high quality of flat steel. It is used to prevent rapid cooling of the steel and ensure uniform solidification.

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