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Volume :

3

Issue :

3

Abstract :

Concrete is an artificial kind of stone prepared from an indefinite mixture of three basic components such as binding materials, inert materials and water. When the components are mixed together to prepare concrete, binding materials such as cement paste acts as a glue binding surrounding the inert materials during the process of hydration and curing. The freshly mixed concrete becomes hard with considerable strength following the setting procedure of cement. During the setting period, vibration may come on fresh concrete as a result of earthquake, pile driving, heavy traffic or vibratory soil compactors. The objective of this research was to perform a laboratory test to find out the effect of vibration on working strength of concrete between the initial and final setting period. On this purpose, two different sizes concrete cylinders (4”X8” and 6”X12”) were casted by mixing cement, sand, stone chips and water with two ratios (1:2:4 and 1:1.5:3). Water-cement ratio was 0.78.