All Title Author
Keywords Abstract


矿渣微粉对水泥耐久性能影响的研究
Influence of Ground Slag on Durability of Cement

DOI: 10.12677/HJCE.2015.46034, PP. 266-273

Keywords: 矿渣微粉,水泥,耐久性,微观分析
Ground Slag
, Cement, Durability, Microstructure-Analysis

Full-Text   Cite this paper   Add to My Lib

Abstract:

矿渣微粉具有一定的水化活性,掺入水泥浆体后能够明显提高水泥抗化学侵蚀性能,抗干缩,抗碳化,抗冻性等耐久性能,提高幅度基本可以达到10%左右;利用SEM,TG-DTA,XRD,压汞孔分析等方法对水泥水化物进行分析,结果表明:矿渣微粉能够吸收水泥水化产物Ca(OH)2生成C-S-H凝胶,导致降低孔径,优化孔结构,从而提高水泥石的密实度,从而改善水泥的各项性能。
Experiment of cement with ground slag shows that ground slag can improve the properties of ce-ment such as coefficient of resistance to chemical corrosion, dry shrinkage, and carbonation coef-ficient, freezing and thawing resistance by 10%. The microstructure-analysis by using SEM, TG- DTA, XRD and MIP shows that the ground slag can absorb the productions of hydrating cement: Ca(OH)2, and C-S-H gel is formed, which can refine the distribution of pore structure and increase the density of cement-stone, therefore improving the durability.

References

[1]  王晓飞, 申爱琴. 磨细矿渣改性超细水泥耐久性及收缩性能研究[J]. 材料科学与工程学报, 2006, 24(2): 200-204.
[2]  丁红霞, 方永浩, 熊静. 大掺量矿渣粉混凝土抗冻性能的研究[J]. 科学技术与工程, 2012, 12(19): 4820-4824.
[3]  张峰, 祝金鹏, 李术才, 等. 海水侵蚀环境下混凝土力学性能退化模型[J]. 岩土力学, 2010, 31(5): 1469-1474.
[4]  林冰梅, 罗建中, 曾宪东. 矿渣微粉的生产及其在混凝土中的应用[J]. 广东建材, 2012(7): 5-7.
[5]  陈仲策, 杨医博, 梁松, 等. 抗海水腐蚀混凝土技术的研究及推广应用[J]. 广东水利水电, 2010(6): 1-4.
[6]  Li, Y., Bao, J.L., Guo, Y.L. (2010) The Relationship between Autogenous Shrinkage and Pore Structure of Cement Paste with Mineral Admixtures. Construction and Building Materials, 24, 1855-1860.
http://dx.doi.org/10.1016/j.conbuildmat.2010.04.018
[7]  刘有志, 张国新. 混凝土干缩开裂机理宏/细观力学分析研究进展[J]. 水力发电, 2013, 39(4): 24-28.
[8]  王建福, 杨全兵. 矿渣对净浆早期开裂的影响[J]. 混凝土与水泥制品, 2006(1): 10-13.
[9]  嵇仙宝. 海相状态下混凝土腐蚀机理及防腐措施研究[J]. 施工技术, 2011(40): 33-35.
[10]  Roziere, E., Loukili, A. and Cussigh, F. (2009) A Performance Based Approach for Durability of Concrete Exposed to Carbonation. Construction and Building Materials, 23, 190-199.
http://dx.doi.org/10.1016/j.conbuildmat.2008.01.006
[11]  元成方, 牛荻涛, 陈娜, 等. 碳化对混凝土微观结构的影响[J]. 硅酸盐通报, 2013, 32(4): 112-119.
[12]  周胜波, 申爱琴, 冯云, 等. 基于细观孔结构特征探讨矿渣微粉对混凝土抗冻性能的影响[J]. 混凝土, 2012(10): 94-97.
[13]  沈化荣, 卢小琳, 高培伟, 等. 气孔结构对水泥混凝土抗盐冻性能影响的研究[J]. 混凝土, 2012(8): 8-10.
[14]  秦宪明, 颜超, 赵娟, 等. 提高海工结构混凝土耐久性的原理和方法[J]. 建筑技术, 2012, 43(1): 18-20.

Full-Text

comments powered by Disqus