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首页> 外文会议>Proceedings Fourth Canada Centre for Mineral and Energy Technology / American Concrete Institute / Japan Concrete Institute International Conference on Recent Advances in Concrete Technology Tokushima, Japan, in June 1998 >Evaluation of the Setting Shrinkage of MMA Polymer Concrete
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Evaluation of the Setting Shrinkage of MMA Polymer Concrete

机译：MMA聚合物混凝土凝结收缩率的评价

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摘要

This paper discusses the mechanism of the setting shrinkage of polymer concrete with liquid resin mainly composed of methyl methacrylate (MMA-PC) and reports the study resutls on the mehtod for reducing the setting shrinkage. The setting shrinkage is classified into two large categories, that is, shrinkage due to polymerization and shrinkage caused by temperature decrease after the maximum temperature is reached. The shrinkage amount due to temperature decrease is in proportion to the liquid resin content. the authors demonstrated that the shrinkage due to polymerization significantly varies with the formation state of matrix of liquid resin with filler. For reducing he shrinkage, it is effective to confine the shrinking strain by adding fibers and modifying the filler properties to limit the volume change due to polymerization.
机译：本文探讨了以甲基丙烯酸甲酯（MMA-PC）为主要成分的液态树脂对聚合物混凝土凝结收缩的机理，并就降低凝结收缩的方法进行了研究。凝固收缩率可分为两大类，即聚合引起的收缩率和达到最高温度后温度下降引起的收缩率。由于温度降低引起的收缩量与液态树脂含量成比例。作者证明，聚合引起的收缩率随带有填料的液态树脂基质的形成状态而显着变化。为了减少收缩，有效的是通过添加纤维和改变填料性能以限制由于聚合引起的体积变化来限制收缩应变。

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