(2-5-3)脱模至应用阶段的收缩: 塑件脱模后未再受到模具约束,属于自由收缩(free shrinkage) 阶段.收缩源为加工过程中之动残余应 (residual
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free shrinkage pvc plastic 自由收缩
shrinkage-free 无收缩的
shrinkage-free grouting material 无收缩灌浆料
high-strength shrinkage-free material 高强无收缩灌浆材料
On this purpose, the performence of free shrinkage of mortar and restrained shrinkage of concrete were studied.
为实现这一目的，作者研究了砂浆的自由收缩规律与混凝土的环形约束收缩规律。
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.
在整个干燥过程中，表层的自由干缩应变最大，越靠近芯层自由干缩应变越小。
The result shows that the tests, which are used in this paper, including ring test and free shrinkage test, could do well in evaluating the shrinkage-cracking potential of HSC.
研究结果表明：本文提出的采用圆环法和与圆环同步的测长法相结合共同评价高强混凝土的收缩开裂趋势的方法，能较好的评价高强混凝土的收缩性能。
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