现浇生态混凝土的制备及抗冻耐久性分析  

Preparation and analysis of freezing resistance durability about cast-in-situ eco-concrete

作　　者：颜庭成[1] 刘荣桂[1] 万炜[1] 徐荣进[1] 

机构地区：[1]江苏大学理学院,江苏镇江212013

出　　处：《江苏大学学报（自然科学版）》2007年第4期350-353,共4页Journal of Jiangsu University：Natural Science Edition

基　　金：国家863项目(2003AA601100-3);青海省2006年度重大科技攻关项目(GG2006-07);青海省生态保护及恢复技术推广计划项目(2006-N-551);国家自然科学基金资助项目(50478089)

摘　　要：通过实验室及示范基地的一系列试验,主要考虑骨料级配、水灰比、水泥用量、添加剂的选用及掺量比例对现浇生态混凝土性能的影响,模拟工程实际情况,进行了气冻水融和水冻水融耐久性试验,分析了动弹性模量和质量随冻融循环的变化规律.在试验研究与理论分析的基础上,开发出具有护堤植生功能的透水性生态混凝土.该生态混凝土具有自然净化水质、实现植物生长(植生)并具备一定的抗冻耐久性、防波浪冲刷以及自然排水透水(护堤)等促进自然生态环境改善等突出的优点.A set of experiments were done in the laboratory and the exemplary base. By changing the aggregate level, water cement mix, cement dosage, additives and their weights, the relationship between these parameters and concrete characteristic was analyzed. Gas freeze-water thaw and water freeze-water thaw experiments about concrete durability were designed and carried through simulating the actual circumstances, and changes of the dynamic modulus and the weight with the freeze-thaw cycle were ana- lysed. Based on the experiments and theoretical analyses, water-permeable eco-concrete with the functions of ravage-protecting and plant-growing has been developed. This ecological concrete has the advan- tages of natural water purification, realization of plant growth durability under freezing-thawing, and promotion of the natural ecological environment, such as anti-wave erosion, naturally draining off the flood,etc.

关 键 词：生态混凝土 透水性 植生 无机质水泥改质剂 冻融循环 寿命预测 

分 类 号：TS201.1[轻工技术与工程—食品科学]