Alkali–silica reaction in mortars and concretes incorporating natural rice husk ash

Rice-husk ash (RHA) is a supplementary cementing material of great interest in many developing countries. Before using in concrete the rice husk needs to be burnt at a controlled temperature. In other conditions a residual RHA is obtained with a lower quality, but it can be improved by grinding (GRHA). As a way to simplify RHA processing and amplify its use nearby where it is produced, it was demonstrated that it is possible to produce...