**6. Conclusions**

From the study pertaining to this work, the following can be concluded:


could lower U-value by 15.58% (**Table 7**), which is translated into reduction in considerable electrical energy requirement to maintain comfort condition in buildings.

6.Such substitution of coal ash in concrete and mortar mixes in building construction could also contribute significantly in the concept of Near Zero Energy Building by restricting its specific energy demand up to certain extent. It could also provide impetus to Green and Affordable Housing program.
