碳酸钙晶须对水泥基复合材料的增强效应及微观机理研究  

Reinforcing Effect and Microscopic Mechanism of Calcium Carbonate Whiskers to Cement Composites

作　　者：曹明莉[1] 位建强[1] 

机构地区：[1]大连理工大学土木工程学院,辽宁大连116024

出　　处：《中国包装科技博览（混凝土技术）》2010年第9期29-32,28,共5页China Science and Technology Review

摘　　要：作为一种新型微纤维状增强材料，碳酸钙晶须力学性能出色、耐久性好、生产成本低，已在诸多领域得到应用。用XRD，SEM等方法对其进行了物相分析和表征，作为增强体掺入水泥胶砂，研究了不同碳酸钙晶须掺量对水泥胶砂抗强度、韧性的影响，结果显示增强增韧效果显著，通过SEM测试，对碳酸钙晶须在水泥基复合材料中增强的微观机理进行了观察和初步分析。CaCO3 whisker is a kind of new microfibre material with excellent mechanical properties, good durability and low which was added to cement mortar to investigate the reinforcement. Phase analysis and characterization of CaCO3 whisker were ied by X -ray diffraction （XRD） , scan electron microscope （SEM）. Effect of different content of CaCO3 whiskers on the and toughness cost, stud- strength of cement mortar was investigated. The results show that the reinforcing and toughening effects of CaCO3 whiske strong, and the microstructure of the matrix was improved. The structure and morphology of the calcium carbonate whiskers in ened Portland cement were observed by SEM, and the microscopic mechanisms of calcium carbonate whiskers were preliminaril lyzed r were hardy analyzed.

关 键 词：碳酸钙晶须 水泥基复合材料 增强效应 微观机理 

分 类 号：TB332[一般工业技术—材料科学与工程]