摘要
目的研究骨料级配、骨胶比、矿物掺合料、树脂对透水混凝土性能的影响,解决其高强与多孔的矛盾和易开裂不耐久的问题.方法通过粗骨料的空隙率找出最佳级配,利用减水剂与矿物掺合料的双掺技术,掺加一定量的砂,采用水泥与水性环氧树脂复配的技术来提高透水混凝土的性能.结果两种骨料质量比m(A)∶m(B)=1.5∶1时,骨料的紧密堆积空隙率最小;骨胶比为3.9时透水混凝土的性能较好;0.8%的减水剂与三种矿物掺合料的双掺技术可有效提高透水混凝土的抗压强度,且硅灰掺量为6%时效果最佳;加砂10%和掺入5%的水性环氧树脂能有效地解决透水混凝土的开裂,提高透水混凝土耐久性.结论骨料级配决定透水混凝土的强度;减水剂与适量的矿物掺合料进行双掺能显著提高透水混凝土的性能;掺加适量的砂和水性环氧树脂可略微提升强度,并能有效减少裂纹的出现,提升透水混凝土的耐久性.
To solve the trade-off between high strength and porosity contradiction,the effects of aggregate gradation,bone glue ratio,mineral admixtures and resin was investigated. Initially,the coarse aggregate porosity was used to study the best mass ratio,and then the technology of double mixture with water reducing agent and mineral admixtures,mixture with sand and the method of mixture with cement and water-soluble epoxy resin were used to improve the performance of pervious concrete. When the mass ratio of the two kinds of aggregates is m（A） ∶ m（B） = 1. 5 ∶ 1,the close-packed porosity of the aggregate is the smallest. When the bone glue ratio is 3. 9,the performance of pervious concrete is better. The technology of double mixture with 0. 8 percent of water reducing agent and three kinds of mineral admixtures can effectively improve the compressive strength of pervious concrete,and the best effect is when the content of silica fume is added to6%. Adding 10 percent of sand and 5 percent of water-soluble epoxy resin can effectively solve the cracking problem of pervious concrete and improve the durability of pervious concrete. aggregate gradation determines the strength of pervious concrete. The performance of pervious concrete can be significantly improved by the technology of double mixture with water reducing agent and an appropriate amount of mineral admixtures,Adding an appropriate amount of water-soluble epoxy resin can slightly improve the strength and reduce the occurrence of cracks which improve the durability of pervious concrete.
作者
张巨松
王华
ZHANG Jusong;WANG Hua(School of Materials Science and Engineering,Shenyang Jianzhu University,Shenyang,China,110168)
出处
《沈阳建筑大学学报（自然科学版）》
CAS
CSCD
北大核心
2018年第3期489-497,共9页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家自然科学基金项目(50479059)
关键词
骨料级配
骨胶比
矿物掺合料
环氧树脂
bone glue ratio
aggregate gradation
mineral admixtures
epoxy resin
