The world population explosion within the last few decades has created very serious housing problems especially in developing countries. In the era of imported portland cement, lime and other cementitious materials the traditional practices of housing construction have undergone serious decline in many developing countries."

The world population explosion within the last few decades has created very serious housing problems especially in developing countries. In the era of imported portland cement, lime and other cementitious materials the traditional practices of housing construction have undergone serious decline in many developing countries."