The addition of mineral admixtures is one of the effective approaches, which can improve fracture brittleness of high compressive strength concrete.
通过试验得出复掺矿物掺合料是改善混凝土断裂脆性的有效途径之一。
Confinement of concrete results in a modification of the effective stress-strain relationship: higher strength and higher critical strains are achieved.
混凝土约束改变了有效应力-应变关系：造成强度和临界应变的增加。
So the high effective pre-stressed reinforced concrete hollow slab with Medium strength spiral-continuous -ribs steel bar has a good prospect.
因此，以中强螺旋肋钢丝为受力筋的预应力空心板具有广阔美好的发展前景。
The experimentation indicates that it is effective to measure the direct tensile strength and other character of concrete by change the size of the test piece and the way of loading.
通过改变试件尺寸及加载方式，还可进一步探讨采用本试验方法测量混凝土的直接抗拉强度，研究混凝土的其它性能。
The experimentation indicates that it is effective to measure the direct tensile strength and other character of concrete by change the size of the test piece and the way of loading.
通过改变试件尺寸及加载方式，还可进一步探讨采用本试验方法测量混凝土的直接抗拉强度，研究混凝土的其它性能。
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