Investigation of Locus Beans Waste Ash as Partial Replacement for Cement in Concrete Structures

Abstract

This study is aimed at investigating the compressive strength of concrete using locust beans waste ash (LBWA) as a replacement
for cement in concrete using three grades of concrete; grade 20, 25 and 30 respectively, the concrete cube cast was; control (0%)
5%, 10% and 15% respectively. the cube was cast, cured and tested at 7days, 14days. 21days and 28days. Although, the results of
this study have shown a significant reduction in compressive strength of concrete utilizing LBWA than normal concrete, it could
be recommended that LBWA concrete should be used in road kerbs, concrete blocks, non-bearing concrete walls, precast units
(partition walls, concrete blocks for Architectural applications and some cases of slabs on soil, culverts, sidewalks, drive ways),
foundation pads for machinery.