EFFECTS OF BAMBOO LEAF AND LOCUST BEANS POD ASHES ON AUTOGENOUS SHRINKAGE STRAIN AND COMPRESSIVE STRENGTH OF MORTAR

• Catherine Mayowa Ikumapayi

  Federal University of Technology Akure

• Samuel Lambe Akingbonmire

  Department of Civil and Environmental Engineering, Federal University of Technology, Akure, Ondo State, Nigeria

Production of cement consumed large amount of energy couple with release of harmful gases like CO₂ into the atmosphere. Every effort to successfully replace its usage in construction industry is a giant achievement. So many confirmed properties of cement establish its usage as an essential construction material. Therefore, any material that will partially replace it must also be tested for the various properties that make cement desirable. Therefore, this research has been able to evaluate the effects of bamboo leaf ash and Locust beans pod ash admixtures, and their mixture proportions on autogenous shrinkage strain and compressive strength of mortar specimens. The auto shrinkage strain was carried out using a cylindrical mortar specimen of 75 mm x 300 mm dimension and the volume changes were measured for the various pozzolanic concrete mixes. The compressive strength test was also carried out using 50 mm x 50 mm x 50 mm mortar specimen crushed with ELE international ADR 1500 compressive machine. The various test were carried out at 7, 14, 21 and 28 day. The results of the compressive strength test show that both bamboo leaf and locust beans pod ashes did not alter the compressive strength of their corresponding mortar significantly. The auto shrinkage results also show that both pozzolans possesses the ability to improve the auto shrinkage of these mortar mixes.

1. Catherine Mayowa Ikumapayi, Federal University of Technology Akure

   Federal University of Technology Akure

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