P K Mehta

“By disregarding the standard chemical and physical requirements for use of fly ash in cement and concrete industry, the authors found that tailor-made blends of even non standard fly ashes with lime and gypsum or with Portland cement produced adequate strength on normal curing. With hundreds of small units in operation and hundreds more on the way, it is obvious that this type of entrepreneurship is vital for making a dent in the fly ash disposal problem while conserving energy and top soil, which are the base materials used in the manufacture of fired-clay bricks.”

– P K Mehta
Professor Emeritus of Civil and Environmental Engineering,
Univ of California, Berkeley, USA