The Influence of Bamboo Leaf Ash as a Cement Substitute on the Compressive Strength of Flowable Concrete

Abstract

Concrete plays important role in  development of technology in construction in Indonesia, concrete offers advantages where constituent materials are easily available in various regions of Indonesia and price is cheaper than other construction materials, but concrete also has several problems, namely the constituent materials of concrete are made from non-renewable resources and in the implementation of ordinary concrete materials cannot optimally enter between reinforcement so that the strength of the structure is not optimal. use of flowable concrete with partial substitution of cement using bamboo leaf ash offers a solution to the problems encountered at the time of implementation. In this study,effect of using flow concrete with partial cement substitution using bamboo leaf ash will be examined and will be compared with normal flow concrete without a mixture of bamboo leaf ash, the method used is bamboo leaf ash which has been burned into powder, then combustion is carried out using a furnace with a temperature of 700°C for 2hours so that silica content is high and then divided into several variations of cement substitution, namely 0%,2.5%,6%,8.5%,10% and obtained an optimal increase in compressive strength in a mixture of 2.5% bamboo leaf ash with a value of 14.78 Mpa.