From the above results, the indication of pozzolanic reaction is evolving and that part of the amorphous silica in the ash is
released into the matrix, combining available CH and forming a second generation CSH improving the strength of the
system. The pozzolanic activity of rice husk ash produces more amount of CSH in the rice husk ash cement sample. Hence
rice husk ash acts as a good pozzolanic material and can be blended with cement.