LABORATORY ANALYSIS OF CAPILLARY FLOW IN ROLLER-COMPACTED CONCRETE AND THE EFFECTS OF WATER-CEMENT RATIO, RESISTANCE, FREEZING AND THAWING OF CONCRETE ON IT

Mostafa Yousefi Rad, Mehdi Mahmoudi
unpublished
Concrete as one of the most consumed building materials has been used nearly two centuries in the construction industry. The final properties of the concrete is a function of the components of its mix design and also an accurate estimate of behavioral characteristics and design of concrete optimized mix designs is one of the most important things in concrete projects that has much more importance in RCC concrete. That is why; transfer and capillary flow in RCC concrete and the impact of
more » ... e impact of water-cement ratio, resistance, freezing and thawing of concrete have been analyzed in this research. The results of the these tests indicate a decrease in cement content of 330 to 400 kg/m 3 in the blend will cause a small increase in compressive strength, reduced water absorption and capillary water absorption in the mix. Also, reducing the cement content of 250 to 330 kg/m 3 will result in reduced compressive strength and increased capillary water absorption. The overall result is that optimized cement content in this research is 330 kg/m 3 that improves the quality of concrete as well reduces construction costs due to low consumption of cement. The lowest capillary absorption was for content 250 and water-cement ratio of 4.0 and the highest capillary absorption for content 400 and water-cement ratio of 5/0. At the time of concrete curing the rolling resistance cycle was increased that this strength is due to capillary absorption in comparison with the concrete cured in 7 days.
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