• Jayant Supe
• Fanindra Katre

Standard cubes and cylinder tests are generally performed to determine compressive strength of concrete according to standard codes. In the tests performed on various samples it is checked that the fresh concrete are properly compacted. Whereas, compaction received by concrete structures and standard specimens may be different at site. In achieving maximum compressive strength of moist-cured concrete water-to-cement ratio and degree of compaction plays an important role. The void spaces in concrete if not filled by proper compaction, significantly reduces the compressive strength, that may effect the durability of concrete members. The effect of compaction on concrete strength determined by rebound hammer, ultrasonic pulse velocity, and pull-out techniques as well as core test were examined, in this experimental work. For performing the tests, a concrete mixture with ordinary Portland cement, crushed limestone aggregate, water, and a plasticizing admixture were used. Cubes and beams were casted by the prepared concrete mixture. Compaction of beams were done in 3 different levels. It is found in results that compaction affects drastically the rebound number, ultrasonic pulse velocity, pull-out force, and core strength.

Concrete, Compaction, Durability, Testing, Strength

"Comparative study of compressive strength of concrete under different compactive efforts.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 3, page no.645-649, March-2018, Available :http://www.jetir.org/papers/JETIR1803368.pdf

"Comparative study of compressive strength of concrete under different compactive efforts.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 3, page no. pp645-649, March-2018, Available at : http://www.jetir.org/papers/JETIR1803368.pdf