Physical and mechanical properties of self-compacting concrete containing superplasticizer and metakaolin
[摘要] The development of concrete technology shows a variety of admixtures in concrete to produce special concrete. This includes the production of self-compacting concrete which is able to fill up all spaces, take formwork shapes and pass through congested reinforcement bars without vibrating or needing any external energy. In this study, the main objective is to compare the physical and mechanical properties of self-compacting concrete containing metakaolin with normal concrete. Four types of samples were produced to study the effect of metakaolin towards the physical and mechanical properties of self-compacting concrete where 0%, 5%, 10% and 15% of metakaolin were used as cement replacement. The physical properties were investigated using slump test for normal concrete and slump flow test for self-compacting concrete. The mechanical properties were tested for compressive strength and tensile strength. The findings of this study show that the inclusion of metakaolin as cement replacement can increase both compressive and tensile strength compared to normal concrete. The highest compressive strength was found in self-compacting concrete with 15% metakaolin replacement at 53.3 MPa while self-compacting concrete with 10% metakaolin replacement showed the highest tensile strength at 3.6 MPa. On top of that, the finishing or concrete surface of both cube and cylinder samples made of self-compacting concrete produced a smooth surface with the appearance of less honeycombs compared to normal concrete.
[发布日期] [发布机构] Jamilus Research Center, Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia, Johor, Batu Pahat; 86400, Malaysia^1;Civil Engineering Department, Islamic University of GAZA, P.O Box 157, Gaza Palestine, Palestine^2;Choice Approach SDN. Bhd., No 3-10-B Jln Desa 2/2 Desa Aman Puri 5210 Kepong, Kuala Lumpur, Malaysia^3
[效力级别] 土木建筑工程 [学科分类]
[关键词] Cement replacement;Compressive and tensile strengths;Concrete technology;Normal concretes;Physical and mechanical properties;Reinforcement bar;Special concretes;Superplasticizers [时效性]
