Engineering properties of self consolidating concrete rani mukherjee dating

Posted by / 25-Jan-2018 18:19

Engineering properties of self consolidating concrete

Self-compacting concrete is a non-segregating concrete that is placed by means of its own weight.The importance of self-compacting concrete is that maintains all concrete’s durability and characteristics, meeting expected performance requirements.In certain instances the addition of superplasticizers and viscosity modifier are added to the mix, reducing bleeding and segregation.Concrete that segregates loses strength and results in honeycombed areas next to the formwork.The purpose of this study is to examine the effects of discrete Pitch-based carbon fibers on the fresh properties of self-consolidating concrete (SCC).Ten different carbon fiber-reinforced self-consolidating concrete (CFRSCC) mixtures were produced with two water/binder (W/B) ratios of 0.35 and 0.4, and 0%, 0.25%, 0.5%, 0.75%, 1% carbon fibers by concrete volume.The flow characteristics of the concrete mixtures were determined with respect to slump flow, J-ring slump, and T50 slump flow time.The segregation resistance of the concrete mixtures was evaluated by using the sieve stability test.

In this project, the SCC was mixed on-site and pumped through a piping system to the specified point, located 200 meters away.The hardened test results showed that increasing the carbon fiber content decreased the compressive strength of the SCC, while the splitting tensile strength of the SCC was increased.Based on the fresh and hardened properties, two different mixes were chosen as optimum mixes in respect to the fresh and hardened properties as well as the cost of producing CFRSCC mixtures.It can also be used in areas with normal and congested reinforcement, with aggregates as large as 2 inches.Self-compacting concrete has been used in bridges and even on pre-cast sections.

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These two mixes were mix M1 (SCC, 0% fibers) and mix M3 (CFRSCC, 0.50% fibers).