Produktong Pinoy: Rice husk ash good for mixing with cement

A Filipino scientist has developed a process by which rice husk ash may be used as a supplementary material for producing cement.

Marshal Calica, Jr., a researcher at Saint Louis College in San Fernando City, La Union, has proven that rice husk ash may be used as an admixture in producing cement paste and concrete.

His study, entitled, “Influence of Rice Husk Ash as Supplementary Material in Cement Paste and Concrete,” is a finalist in a research and development (R & D) competition for industry and energy held in San Fernando City, La Union. According to Calica, 10 percent rice husk ash may be used as a supplementary material for producing cement, thereby helping save cost for contruction materials at R20 per bag of cement.

“You can replace some amount of cement (up to 10 percent) without sacrificing the strength of the concrete,” Calica disclosed.

The researcher said rice husk ash contains silica which serves as a binder in producing cement. It is environment-friendly as it aims to reduce waste coming from rice husk.”It can increase the permeability of the concrete,” Calica said.

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