Comparison Between High Grade Retempered Concrete [M40] and Medium Grade Retempered Concrete [M20]

Authors

  • A. R. Pethkar Sveri’s College of Engineering, Pandharpur [M.H.] ,India
  • V. V. Patil Sveri’s College of Engineering, Pandharpur [M.H.] ,India

DOI:

https://doi.org/10.51983/tarce-2012.1.2.2189

Keywords:

Retempering of Concrete, Flexural Strength of Concrete, Compressive Strength of Concrete Slump of Concrete

Abstract

As the grade of concrete is increases the quantity of cement is increases which effects on theproperties of retempered concrete. For M20 concrete we can retemper the concrete upto 120 min. but forM40 concrete retempering time is only 30 min. Adding water to a plastic mix to increase slump is an extremely common practice, even though it is not recommended because it increases the porosity of concrete. Concrete often arrives on site more than half an hour after initial mixing. Placement operations can take anywhere from 10 to 60 minutes, depending on the field conditions and the size of the load. When the slump decreases to an unacceptable level during the operations, water is added to the mix. Objective of this paper to study the strength characteristics of retempered concrete M20 & M40 concrete. Usually the retempering process is used with normal concrete or with ready mixed concrete; an attempt is made to check the compressive and flexural strength of normal retempered concrete with an addition of retarder in three different percentages as 0.2%, 0.4% and 0.6% at retempering time of 15 minutes to 90 minutes.

References

D. K. Kulkarni and Dr. K. B. Prakash , “The effect of addition of more than two chemicals admixtures on the properties of retempering of concrete,” NBA Media, pp. 8-11 February 2010.

M. S. Shetty, “Concrete Technology Books,” S. Chand and company Ltd, 1st edition, 1982.

Onder Krica, lutfullah Turanlt and Turhan Y. Erdoogan, “Effect of retempering on consistency and compressive strength of concrete subjected to prolonged mixing,” Cement and concrete Research, Vol. 32, pp. 441-445, 2002.

A. M. Alhozaimy, “Effect of retempering of R. M. C. IN Hot- dry environments,” Cement & Concrete Composites, Vol. 29, pp. 124- 127, 2007.

A. M. Alhozaimy, “Retempering of ready mixed concrete in Riyadh, Saudi Arabia,” 6th Saudi Engineering Conference, KFUPM, Vol. 3, pp. 137-146, December 2002.

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Published

05-11-2012

How to Cite

Pethkar, A. R., & Patil, V. V. (2012). Comparison Between High Grade Retempered Concrete [M40] and Medium Grade Retempered Concrete [M20]. The Asian Review of Civil Engineering, 1(2), 7–9. https://doi.org/10.51983/tarce-2012.1.2.2189