再生玻璃作为辅助胶凝材料制备ECC的力学及变形性能  

Mechanical and Deformation Properties of Engineered Cementitious Composites Containing Recycled Glass as Supplementary Cementitious Material

作　　者：蔡新江[1,2] 戴朝炜 邵永健[1] 田石柱[1,2] CAI Xinjiang;DAI Chaowei;SHAO Yongjian;TIAN Shizhu(School of Civil Engineering,Suzhou University of Science and Technology,Suzhou 215011,China;Jiangsu Province Key Laboratory of Structure Engineering,Suzhou University of Science and Technology,Suzhou 215011,China)

机构地区：[1]苏州科技大学土木工程学院,苏州215011 [2]苏州科技大学江苏省结构工程重点实验室,苏州215011

出　　处：《硅酸盐通报》2020年第9期2739-2744,共6页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(51778395);江苏省自然科学基金(BK20171221);江苏省建设系统科技项目(2018ZD256);江苏省“333工程”(2018);江苏高校“青蓝工程”(2018);江苏省高校优秀中青年教师境外研修计划(2018);江苏高校优势学科建设工程资助项目。

摘　　要：为考察再生玻璃作为辅助胶凝材料对ECC的影响,开展了一系列力学性能试验,研究其抗折与抗压强度、弯曲性能和单轴拉伸性能。结果表明:采用再生玻璃作为辅助胶凝材料可显著提高ECC的抗压强度,同时抗折强度略有降低;再生玻璃作为辅助胶凝材料或细骨料制备的ECC在弯曲荷载下可呈现出明显的多缝开裂和假应变硬化特征;通过良好的配合比设计,再生玻璃粉仅作为辅助胶凝材料制备的ECC平均极限拉伸应变接近3%,具备良好的变形能力。The effect of using recycled glass as supplementary cementitious material or using recyled glass as fine aggregates on the mechanical properties and deformation behaviour of engineered cementitious composites(ECC)was investigated via a series of mechanical properties tests that included flexural/compressive strengths,flexural toughness and uniaxial tensile strength.The results indicate that using recycled glass as supplementary cementitious material significantly increases the compressive strength while the flexural strength of ECC is appropriately reduced.All ECC containing recycled glass as supplementary cementitious material or fine aggregates present the multiple cracking and strain-hardening phenomena under bending load.With excellent mixture ratio design,ECC singly incorporating recycled glass powder as supplementary cementitious material have excellent deformation properties,and the average ultimate tensile strain is close to 3%.

关 键 词：再生玻璃 辅助胶凝材料 ECC 弯曲韧性 拉伸应变 多缝开裂 

分 类 号：TU528.572[建筑科学—建筑技术科学]