ISSN: 2454-1907 International Journal of Engineering Technologies and Management Research June 2020, Vol 7(06), 47 – 57 DOI: https://doi.org/10.29121/ijetmr.v7.i6.2020.688 © 2020 The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 47 ANALYSIS OF THE EFFECTS OF SUPERPLASTICIZER ADDITION AND WATER REDUCTION IN CONCRETE MIXTURE ON CONCRETE COMPRESSIVE STRENGTH Dwi Sri Wiyanti *1 , Taufik Dwi Laksono 2 *1, 2 Civil Engineering, Faculty of Engineering, Wijayakusuma University Purwokerto, Jl. Beji Kampus Karangsalam Purwokerto Indonesia 53152 DOI: https://doi.org/10.29121/ijetmr.v7.i6.2020.688 Article Citation: Dwi Sri Wiyanti, and Taufik Dwi Laksono. (2020). ANALYSIS OF THE EFFECTS OF SUPERPLASTICIZER ADDITION AND WATER REDUCTION IN CONCRETE MIXTURE ON CONCRETE COMPRESSIVE STRENGTH. International Journal of Engineering Technologies and Management Research, 7(6), 47-57. https://doi.org/10.29121/ijetmr.v7 .i6.2020.688 Published Date: 15 June 2020 Keywords: Concrete Contrete Compressive Strength Cement Superplasticizer ABSTRACT Nowadays, concrete is still one of the most used building materials, it had been improved whether in it’s quality or it’s mixture materials. There were a lot of studies that had been conducted to improve concrete that related to the produced compressive strength, stiffening speed, flexibility, etc. There are so many materials that can be used in concrete mixture to improve compressive strength. This study was conducted by using superplasticizer and reducing water amount in concrete mixture and aimed to find out how big it’s effects on the produced concrete compressive strength. Superplasticizer was used as admixture material wtih 1 percentage calculated by cement weight. Whereas water amount in concrete mixture was reduced by 0%, 15%, and 17,5%. The result obtained was that using 1% superplasticizer and reducing 15% water amount in concrete mixture produced optimum compressive strength of 22,98 Mpa. 1. INTRODUCTION The level of infrastructure needs that getting higher must be followed by the capabilty to meet the infrastructure with those needs. Innovations are continuously encouraged to provide maximum results for all parties so that the community’s need for infrastructure can be fulfilled. Infrastructure construction nowadays whether by the government, the private sectors, or both of them have a positive impact on the development of construction industries. The use of main materials in infrastructure construction holds an important role, one of those main materials is concrete. Concrete is still a part of the main materials because it has many advantages such as easy to shape, has the ability to withstand the load that works on it, and others. Concrete can be use as a structural component such as stairs, beam, foundation, and another structural component (Wulfam, 2006:2), concrete can also be use as an architectural component like insulating wall. Day by day innovation on concrete is developing, for example the use of no-fine concrete where concrete does not includes sand in it’s mixture (Diarto, 2014:1). Innovation on concrete is not only to improves it’s quality but also to speed up the time and reducing the cost needed to acquire the desired concrete.