现浇生态混凝土的制备及抗冻耐久性分析

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.

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

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.