Influence of Super plasticizer on the Compressive Strength
the workability of M15 grade concrete, determine the effect of super plasticizer on the setting time of concrete, determine the effect of super plasticizer on the compressive strength of M15 grade concrete, determine the of optimum dosage for each super plasticizer in terms of workability and compressive strength of M15 grade concrete. 2.
Effect of Superplasticizer on Fresh and Hardened
This paper has been made an attempt to study the influence of superplasticizer dose of 0.6, 0.8, 1.2, 1.8 and 2.5 percentage on performance of concrete. The experimental tests for fresh and...
Influence of superplasticizer on strength of concrete
Today super plasticizers are used in all important projects across the world in high raise buildings, pre-stressed concrete, slender components with congested and densely packed reinforcement,...
Chemical Admixtures - Cement
Superplasticizers, also known as plasticizers or high-range water reducers (HRWR), reduce water content by 12 to 30 percent and can be added to concrete with a low-to-normal slump and water-cement ratio to make high-slump flowing concrete.
Effects of Super Plasticizers on Concrete | Concrete Technology
Super plasticizers due to the reduction in water/cement ratio, reduce the penetration of chlorides and sulphates into the concrete and thus improve the resistance to the sea water or deicing effect. The resistance to sulphate attack also has increased due to the same reason.
- What is a super-plasticizer in concrete?
- Plasticizers (often called super-plasticizers) are chemical admixtures which cut the electrostatic attraction in cement . This allows the cement to become more evenly dispersed in the concrete mix, and creates a stronger concrete as a result. Another significant benefit to using a super-plasticizer is the increased workability of the concrete.
- Why are plasticizers and super-plasticizers sometimes added to concrete mix?
- Plasticizers and super-plasticizers are sometimes added to concrete mix. Why is this done?
- Concrete is a mixture of aggregate (rocks), sand, Portland cement, and water. Water combines with cement to form hydration products, which glue the mix together. Portland cement has an electrostatic attraction to itself.
- Do superplasticizers reduce water in concrete mixes?
- The benefits obtained by Superplasticizers in the reduction of water in the concrete mixes are best illustrated by the following examples. With PPC (Flyash based) conforming to IS:1489-part-I-1991. 7 days strength 38.5 N/mm 2.
- Do plasticizers and superplasticizers improve workability at constant water cement ratio?
- From the experience and knowledge gained from this course of study both, plasticizers and superplasticizers not only improved workability at constant water cement ratio but considerably enhanced the density at reduce water-cement ratio however loss in slump observed.
- Do super plasticizers affect setting of cement?
- The effect of the use of super plasticizers on the setting of concrete is not found significant except in the case of cements having very low contents of C 3 A. If the C 3 A contents are very low the retardation of setting of cement may be very significant. However the other long term properties are not appreciably affected.
- What is the difference between water reducing and superplasticizer?
- Water-reducing plasticizers reduce the amount of water needed in the concrete mix, while superplasticizers can increase the workability of the concrete without increasing the water content. Retarding plasticizers slows down the setting time of the concrete, which can be useful in hot or dry weather conditions.
