MICROSTRUCTURAL CHARACTERISATION, PHYSICAL AND CHEMICAL PROPERTIES OF RICE HUSK ASH AS VIABLE POZZOLAN IN BUILDING MATERIAL: A CASE STUDY OF SOME NIGERIAN GROWN RICE VARIETIES. NIJOTECH [Internet]. 2017 Dec. 31 [cited 2026 Apr. 23];37(1):71-7. Available from: https://www.nijotech.com/index.php/nijotech/article/view/1579