高强韧ECC材料制备理论及工艺研究

刘一钉; 钟轶峰; 赵子龙; 李帛书; 邓兵

高强韧ECC材料制备理论及工艺研究

1. 重庆大学土木工程学院
2. 重庆大学山地城镇建设与新技术教育部重点实验室

基金项目: 重庆科学基金资助项目(Nos.cstc2016jcyj A0426)；

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摘要

摘要: 进入21世纪以来,随着跨海湾、海峡大桥的建造,超高层、大跨度混凝土构筑物的出现使混凝土材料面临着新的挑战。应运而生的"新型绿色工程材料"——水泥基工程复合材料ECC则是基于细观力学设计的一种具有超强韧性的三维乱向分布短切纤维增强水泥基复合材料,可以满足这些工程应用对材料性能的特殊要求。ECC材料的良好特性主要表现为以下特征:高延性、高韧性和多缝开裂等。文章从材料设计理论、制备工艺和应用前景对ECC材料进行了研究,经由多种前提的假定、原理分析(二重变分渐近双尺度法、应力应变曲线等方法)并进行模拟实验,建立了ECC水泥多尺度标准模型。实验通过建立不同界面模型,采用理论分析后对模型参数进行校正,提出变分渐进多尺度模型技术路线制备高性能ECC材料的研究理论,为工程复合材料的制备提供了具有一定参考价值的理论模型。

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参考文献(11)

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