|
OALib Journal期刊
ISSN: 2333-9721
费用：99美元
|
|
|
|
减缩剂外涂对水泥基材料性能的影响
Abstract:
对比研究了减缩剂内掺和外涂对砂浆收缩、抗裂及力学性能的影响。结果表明减缩剂外涂对砂浆试件有比较明显的减缩效果;减缩剂外涂的溶液浓度越高,减缩效果越好,适宜浓度为50%;相比内掺,减缩剂外涂可提高砂浆的抗折强度和抗压强度,提高砂浆抗裂性能,开裂面积下降了35%;减缩剂外涂增加水泥石中C–S–H凝胶及钙矾石的生成量,减少了水泥石中20～50nm毛细孔的数量。
| [1] | MALTESE C,PISTOLESI C,LOLLI A,et al.Combined effect of expansive and shrinkage reducing admixtures to obtain stable and du-rable mortars[J].Cem Concr Res,2005,35:2244–2251. [2]RONGBING B,JIAN S.Synthesis and evaluation of shrinkage-reducing admixture for cementitious materials[J].Cem Concr Res,2005,35:445–448. [3]邵正明,张超,仲晓林,等.国外减缩剂技术的发展与应用[J].混凝土,2000,132(10):60–63.SHAO Zhengming,ZHANG Chao,ZHONG Xiaolin,et al.Concrete(in Chinese),2000,132(10):60–63. [4]张志宾,徐玲玲.水泥基材料复配减缩剂的减缩作用[J].硅酸盐学报,2007,35(4):495–499.ZHANG Zhibin,XU Lingling.J Chin Ceram Soc(in Chinese),2007,35(4):495–499. [5]FARSHAD RAJABIPOUR,GAURAY SANT,JASON WEISS.Inter-actions between shrinkage reducing admixtures(SRA)and cement paste’s pore solution[J].Cem Concr Res,2008,38:606–615. [6]王智,代小妮,钱觉时,等.水溶剂法合成聚丙烯酸系混凝土减缩剂的研究[J].化学研究与应用,2008,20(7):927–931.WANG Zhi,DAI Xiaoni,QIAN Jueshi,et al.Chem Res Appl(in Chi-nese),2008,20(7):927–931. [7]KONSTANTIN K,SEMION Z.Overview and future trends of shrink-age research[J].Mater Struct,2006,39:827–847.
|
Full-Text
|
|
Contact Us
service@oalib.com QQ:3279437679 
WhatsApp +8615387084133
|
|
