A Study of the Property of Lightweight Concrete Block made of Expanded Clay Pellets and Fly Ash.

Abstract

The research aims to study the property of lightweight concrete block made from expanded clay pellets and fly ash by focusing on the mortar’s compression test to the various mixing of fly ash and cement. The results showed that an increased proportion of fly ash resulted to mortar’s low compression strength and also lower than the average compression value. The mixtures of fly ash in place of cement at a proportion of 10% and 20% exhibited at 225 and 224 kg/cm2 respectively which it’s higher than compression strength of cement. It was also found out that other mixtures exhibited low compression due to optimal mixtures of fly ash 10 – 20% in place of cement by weight. The findings from the tests of the property of the lightweight concrete blocks presented that the replacement of voids at percentages of 70, 80, and 90 at the mixing proportion of fly ash 20% to cement 80% by weight was applicable to build a binder for forming the lightweight concrete blocks. Moreover, when using the replacement of voids at 90% of cement by weight, it showed the best result of forming and bonding in the testing group. However, the results revealed that the values of the compressive strengths at 90% proportion cannot reach the Industrial Standards referred to no Bearing Load Concrete Blocks TIS 58-2533.