The additive for cement and its properties

Abstract

This research was carried out to establish the properties and strength behaviour of concrete using additive using mix design concrete and constant water-cement ratio. The main objective of this study is to find the strength and deflection which can be categorized as concrete that using assorted limestone, water repellent and kaolin as additive cement replacement material together. The sample prepared using is grade 20 N/mm2. Laboratory test was carried out to investigate the properties of fresh concrete and the strength development of hardened concrete. Total cube specimens 100 mm x 100 mm x 100 mm are 48 cubes. The water absorption test and compressive strength test were being conducted at 3, 7 and 28 days curing day. This research also include flexural test which is conducted using mould 100 mm x 100 mm x 500 mm beam. The findings withdrawn from this research are the results for cubes tests indicated that sample with 50% additive composition for concrete decreased the performance of hardened concrete. The addition of limestone, water repellent and kaolin reduces the compressive strength of concrete, and the maximum compressive strength obtained in this study is from portland cement concrete. The flexural test in this research also shows the deflection of addition in concrete not higher over the portland cement concrete control. For water absorption test, portland cement concrete not absorb much water different the other specimen.