• The rate of water evaporation, shrinkage strain and the area of cracks increase with increasing exposure temperature and wind velocity, and with decreasing relative humidity.

    混凝土蒸发速率收缩变形开裂面积随着环境温度风速增加增大,随着相对湿度升高而降低

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  • Along with percentage of water loss and aggregate grade, the laws of small beam dry shrinkage strain and average dry shrinkage index.

    小梁应变平均干缩系数失水率、变化规律

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  • Thirdly, we apply the theory of increment method to analyze the stress field of basement in construction period under the action of temperature and shrinkage strain by finite program ANSYS.

    再次运用增量原理ANSYS分析地下室结构施工期间温度收缩变形作用应力场

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  • Research results show that the relationship between autogenous shrinkage at early ages and ultimate tensile strain can be approximately figured by a quadric equation.

    研究结果表明混凝土早期自收缩大小相应的极限拉伸应变具有显著二次曲线关系

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  • The drying shrinkage strain develops slowly, since it is a function of the migration of the water through the hardened concrete.

    干燥缩水应变发生较慢因为一个透过硬化混凝土迁移作用

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  • Suggest the nonlinear elastic Constilutive model taking into the account of strain-softening, shear dilatancy(shrinkage)properties and stress path.

    提出考虑土的应变软化(剪应力路径影响非线性弹性模型

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  • Throughout the drying process, the surface of the free shrinkage strain is the largest, the more close to the core layer the smaller the free shrinkage strain.

    整个干燥过程中表层自由应变最大靠近自由干缩应变越小

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  • The early cracking of concrete is usually caused by dry shrinkage, autogenous shrinkage of cement hydration and thermal-strain by hydration heat of cement.

    混凝土早期开裂主要由于混凝土失水所产生的干燥收缩水泥水化所产生混凝土收缩以及水泥水化所产生的温度应变所引起。

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  • The results show that the interfacial stress produced from the shrinkage of the matrix in the composites injection molding process can strain induced crystallization of th.

    结果表明共混体系界面应力应变诱导结晶作用及其所引起基体伸展链晶体网络结构的形成是该材料实现脆韧转变的重要原因。

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  • Prolonging the heat-setting time to provide enough relaxation time for high elastic strain, which can also reduce the inner stress and the dry heat-shrinkage.

    延长定型时间有利于形变的松弛降低内应力,有利于降低干热收缩。

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  • Weld shrinkage-induced local strain to yield point strain often several times, than the strain due to the load is much larger;

    焊缝收缩诱发局部应变时常达到屈服应变的荷载引起应变

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  • Weld shrinkage-induced local strain to yield point strain often several times, than the strain due to the load is much larger;

    焊缝收缩诱发局部应变时常达到屈服应变的荷载引起应变

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