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Influence of Hydrostatic Pressure on Compressive Strength of Self-consolidating Concrete

Influence of Hydrostatic Pressure on Compressive Strength of Self-consolidating Concrete
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摘要 The design of unique chamber, in which the SCUWC (self-consolidating underwater concrete) can be tested under the impact of the hydrostatic pressure from 0.1 MPa to 0.5 MPa, is presented in the paper. The results of the preliminary tests of the effect of the hydrostatic pressure on the compressive strength of SCUWC were shown. The impact of the hydrostatic pressure on the compressive strength values of test specimens has been confirmed. There has been an increase in the strength of the specimens taken from the upper parts of the concrete samples. As it can be seen from the preliminary research, the differences in compressive strength are related to the differences that occur in the size and distribution of air voids in the samples taken from upper and lower parts of the test specimens. On the basis of the carried out investigations of the compressive strength, it can be concluded that the hydrostatic pressure has a favorable effect on the compressive strength of the tested specimens of SCUWC. Increase of the compressive strength is observed mostly in the upper layers of the samples. Preliminary analysis of the quantity and distribution of air pores in the samples of concrete subjected to pressure 0.5 MPa confirms the positive impact of the hydrostatic pressure on the layers close to the surface indicated by the absence of large air voids above 1,500μm and by reducing the quantity of air pores of size above 300μm.
出处 《Journal of Civil Engineering and Architecture》 2014年第12期1549-1555,共7页 土木工程与建筑(英文版)
关键词 Compressive strength hydrostatic pressure self-consolidating concrete underwater concrete air voids. 混凝土抗压强度 静水压力 自密实 水下混凝土 承受压力 样品 测试 强度值
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参考文献11

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