Statistical Modelling of Compressive Strength of Hollow Sandcrete Blocks
Authors: Osegbowa DE, Orie UO
Sandcrete blocks are used as load and non-load bearing walls in the construction of buildings, and structures. The variations in the quality and quantity of its constituent materials with the methods of curing affect the compressive strength of sandcrete blocks. Modelling using multiple regression approach was used to develop a compressive strength model in terms of constituent materials for 28 days curing age of hollow sandcrete blocks made with St Saviour fine aggregate sourced from Benin City, Edo State, Nigeria. The model formulated for 28 days compressive strength using Microsoft Excel gave coefficient of determination (R2) of 0.9879 for the hollow sandcrete block, indicating good correlation. The student – t and F – distribution tests also showed that the model was adequate for hollow sandcrete blocks compressive strength prediction. The formulated model eliminates trial and error of mixes, reduce cost and time of production of hollow sandcrete blocks.
Affiliations: Department of Civil Engineering, Faculty of Engineering, University of Benin, Benin City, Nigeria
Keywords: Sandcrete Blocks, Compressive Strength, Modelling, Student-t Test, F-distribution Test
Published date: 2019/06/30