Abstract
The purpose of this research is to investigate the adequacy according to Civil Engineering Standard of using basalt aggregates in concrete mixes. Basalt aggregates which are an extrusive igneous rock has gained significant development due to its properties and availability in Biu. The researcher examines the aggregate gradation, rate of water absorption, density, workability of the basalt aggregate and determination of compressive strength of the concrete cubes after 7days, 14days and 28 days of curing which is backed up by a statistical analysis of the model in the concrete mix by varying the percentage of basalt aggregate. Meanwhile a conventional limestone mix was used as control mix. The results of this investigation show a general improvement in the mix properties as a result of introducing Biu Borno State basalt aggregates in the mix design.
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