Mechanical Properties of Blast Furnace Slag and Rice Husk Ash with Coconut Shell as Partial Replacement of Aggregates

Abstract

This research showed the application of concrete material in construction industry were highly demand which growing rapidly demonstrate the need for various types and properties of concrete to meet the diverse needs of the user. Normally, the quality of concrete with high durability properties can be generated by consideration of the composition of the materials used such as cement, sand, aggregates or water. Besides that, mix design and the way of production like mixing, transporting and pouring concrete is also the factors to get a better quality of concrete. Recently, the sustainability in construction is one of the efforts that have been practiced by developed countries to create healthier environment and to reduce the environmental impact of a building over its entire lifetime, while optimizing its economic viability and the comfort and safety of its occupants. One of the steps that can be practice is to use materials that are categorized as agricultural waste material such as palm oil fuel ash, rice husk, fly ash slag, sludge, coconut shell and etc. in concrete manufacturing. Hence, the objective of this paper is to evaluate the performance of blast furnace slag, rice husk ash and coconut shell as partial replacement of aggregates in cement. A series of test were conducted to investigate the performance of blast furnace slag, rice husk ash and coconut shell as partial replacement of aggregates in cement. The tests that are being conducted are compressive strength test, flexural strength test, rebound hammer test, ultrasonic pulse velocity test, water permeability test, sieve analysis test, water absorption test, carbonation test, alkali-silica reaction test, SEM test and shrinkage test.