硅灰掺量对多孔混凝土强度和植生性能的影响  

Effect of content of silica fume on strength and planting performance of porous concrete

作　　者：梁锦程 喻林[1] 陈建国 LIANG Jincheng;YU Lin;CHEN Jianguo(College of Mechanics and Materials,Hohai University,Nanjing 211106,China;Guangxi Key Laboratory of Water Engineering Materials and Structures,Guangxi Institute of Water Resources Research,Nanning 530023,China;School of Water Conservancy Engineering,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]河海大学力学与材料学院,江苏南京211106 [2]广西壮族自治区水利科学研究院,广西水工程材料与结构重点实验室,广西南宁530023 [3]郑州大学水利科学与工程学院,河南郑州450001

出　　处：《混凝土与水泥制品》2025年第1期91-95,共5页China Concrete and Cement Products

基　　金：江苏省研究生科研与实践创新计划项目(SJCX23_0176)。

摘　　要：研究了硅灰掺量(0、6%、16%、26%、36%、46%)对多孔混凝土抗压强度、孔隙率、孔隙溶液pH值和植生性能的影响,并进行了微观分析。结果表明:随着硅灰掺量的增加,多孔混凝土的28 d、56 d抗压强度基本呈先增大后降低再增大的趋势,孔隙率、孔隙溶液pH值均呈降低趋势;适量硅灰的掺入提高了15 d、30 d植株高度和叶片含水率;适量硅灰能提高体系的水化程度和基体密实度,过量硅灰反而会降低基体的密实度。The effects of content of silica fume(0,6%,16%,26%,36%,46%)on the compressive strength,porosity,the pH value of the pore solution and planting performance of porous concrete were investigated,and microscopic analysis was carried out.The results show that,with the increase of the content of silica fume,the 28 d and 56 d compressive strengths of porous concrete basically show the trend of first increasing then decreasing and further increasing,the porosity and the pH value of the pore solution of porous concrete all show the trend of decreasing.Appropriate content of silica fume increases the height of plants and the water content of leaves at 15 d and 30 d.Appropriate content of silica fume can improve the hydration degree of the system and matrix compactness,while excessive silica fume may decrease the compactness of the matrix.

关 键 词：硅灰 多孔混凝土 抗压强度 孔隙率 植生性能 微观形貌 

分 类 号：TU528.0[建筑科学—建筑技术科学]