A Study on Understanding the Effects of Admixtures on the Properties of Self Compacting Concrete

Abstract

Self-Compacting Concrete (SCC) is a  flowing concrete mixture that, even in the presence of  crowded reinforcement, can consolidate and entirely fill up  formwork under its own weight without vibrating while it  is being poured.SCC was initially described by Japanese  researchers in the late 1980s.The main aim of this  dissertation is to discuss the effects of various admixtures  on the properties of self-compacting concrete. An  experimental analysis on self-compacting concrete (SCC)  with a water cement content of 0.42 was conducted in this  study. Various types of mixes were used, the first included  different percentages of silica fumes (SF) mixed with  concrete. The second mix includes super plasticizer SP 430 for a notable variation in its strength. Various batches  of concrete mix were also used for testing by combining  super plasticizer with different chemical admixtures. Since  self-compacting concrete is the subject of the research,  slump cone and V-funnel tests are performed on fresh  SCC, and the compressive strengths, split tensile strengths  and flexural strengths of the concrete are measured on  hardened blocks as properties. For 7 and 28 days cured specimens, it was discovered that  adding 10% silica fumes and 1% SP-430 and various  combinations of chemical admixtures with SP-430  respectively to the concrete were found to give noticeable  compressive, flexural and split tensile strength also good  workability characteristics.