制备工艺参数对河湖淤泥非烧结砖强度的影响  

Influence of preparation process parameters on strength of non-fired bricks made of river and lake silt

作　　者：权宗刚 浮广明 张云宁 吕梦琪 王科颖 梁栋 QUAN Zong-gang;FU Guang-ming;ZHANG Yun-ning;LV Meng-qi;WANG Ke-ying;LIANG-Dong

机构地区：[1]西安墙体材料研究设计院有限公司,陕西西安710061 [2]陕西砖瓦杂志社有限公司,陕西西安710061

出　　处：《砖瓦》2021年第12期14-16,共3页Brick-tile

基　　金：“十三五”国家重点研发计划“河湖淤泥的高效脱水技术及其制备多孔保温砖的研究(2018YFD1101001-03)”。

摘　　要：我国河湖众多,淤泥的富集对河湖水环境造成严重影响,利用淤泥制备绿色建材是重要的资源化途径之一。以淤泥:水泥:高炉矿渣=80:15:5(质量比),减水剂为水泥掺量的0.5%,土壤固化剂为淤泥掺量的0.05%为配比,设计正交试验研究工艺参数对淤泥非烧结砖性能的影响。结果表明:最佳制备工艺为养护时间28d,成型压力15MPa,成型拌合水率12.5%,抗压强度可达到14MPa。影响抗压强度的因素的主次顺序为:养护时间>成型压力>成型拌合水率,且随着养护时间、成型压力的增加,抗压强度增大,随着成型拌合水率的增大,抗压强度先增大后稍有减小。Take sludge: cement: blast furnace slag=80:15:5(mass ratio), water reducing agent is 0.5% of cement content, and soil curing agent is 0.05% of silt content as the ratio, and the orthogonal test is set to study the process parameters effect on the performance of silt non-fired bricks. The results show that the best preparation process is curing time 28 d, molding pressure15 MPa, molding mixing water rate 12.5%, and compressive strength can reach 14 MPa. The primary and secondary order of the factors affecting the compressive strength is: curing time > forming pressure > molding mixing water rate, and with the increase of curing time and molding pressure, the compressive strength increases, and as the molding mixing water rate increases Large,the compressive strength increases first and then decreases slightly.

关 键 词：淤泥 非烧结砖 绿色建材 工艺参数 

分 类 号：TU522.04[建筑科学—建筑技术科学]