EVALUATION OF SAW DUST CONCRETE WITH VARIOUS PERCENTAGES OF METAKAOLIN
Gana A.J.; Ogunleye, O. D. &Braimoh S.O.
Department of Civil Engineering
Landmark University,Omu-AranEmail: phildebo123@gmail.comor braimohsolo@gmail.com
ABSTRACT
This study established the effects of Metakaolin on Sawdust Concrete as an additive in concrete composites. The workability density, flexural strength and compressive strength of the sawdust concrete and Sawdust Concrete with various percentages (i.e 5%, 10% and 15%) of Metakaolin were compared to that of normal mix batch conventional concrete. The mix design was based on relevant concrete mix design codes. The 150mm x 150mm x 150mm cube specimens was used for the compressive strengthtesting of 200mm x 100mm x 50mm rectangular Beam specimens Test for flexural strength. The specimens were cured in water and were tested after 7, 14 and 28 days. The tests showed that the workability of concrete reduces after using Sawdust as full replacement of sand and also reduces after the addition of Mekaolin in Sawdust concrete. Tests on compressive and flexural strength showed that Sawdust Concrete had light weight, but the addition of Mekaolin enhanced the strength of the concrete, although concrete strength does not increase proportionally with increasing fibre. The increased in strength was just up to a certain Metakaolin compressive and flexural strength after 28days of curing
Keywords: Strength, Evaluation, Saw-dust, Concrete, Metakaolin
