The Effect of Aggregate Type on Strength Characteristics of Geopolymer Concrete
Gana A.J.; Adewara Sunday O; Asamu Festus F. & Ogundepo D.O
Department of Civil Engineering, Landmark University Omu-Aran, Kwara State
Department of Economics, Landmark University, Omu-Aran, Kwara State
Department of Sociology, Landmark University, Omu-Aran, Kwara State
Email: phildebo123@gmail.com
ABSTRACT
Constructions of buildings and complex structures have increased in the world, with this course, cement usage have increased. Cement production is known to cause, carbon dioxide emission into the atmosphere in large scale, which forms about 65% of the greenhouse gases leading to adverse effects on the climate particularly global warming. To this effect research efforts are now being geared towards finding suitable alternatives to conventional Portland cement. In this investigation, geopolymer concrete in which alkali activated cement served as the binder was considered using locally available materials. Such concretes are considered greener than the conventional concrete. Specifically, the study looked at the effect of aggregate type on the strength characteristics of geopolymer concrete. The aggregates used were granite and limestone while the source materials used was Rice Husk Ash (RHA). Sodium Hydroxide and Sodium Silicate were used as the alkali activator. The results of the comprehensive strength tests conducted showed that strengths recorded were generally low, however, geopolymer concrete in which limestone were used as coarse aggregates performed better than those with granite. According to my result and findings in chapter four, the geopolymer concrete cannot be applicable to advance or complex structures. Although it can be considered for not too complex structures.
Keywords: Effect, Aggregates type, Strength Characteristics, Geopolymer Concrete
