| 减缩剂对水泥基材料水化和孔结构的影响(英文) |
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| 引用本文： | 张志宾,徐玲玲,唐明述.减缩剂对水泥基材料水化和孔结构的影响(英文)[J].硅酸盐学报,2009,37(7). |
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| 作者姓名： | 张志宾 徐玲玲 唐明述 |
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| 作者单位： | 南京工业大学材料科学与工程学院,南京,210009 |
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| 摘 要： | 通过对水泥净浆水化放热量、Ca(OH)2的含量和化学结合水量及水泥砂浆的孔结构的测定,研究减缩剂对水泥基材料水化和孔结构的影响.结果表明:减缩剂会延缓水泥的水化,且随着龄期的发展,延缓作用渐弱.具体表现为减缩剂会降低水泥水化放热的峰值,延迟峰值出现的时间,减小水化放热量;减缩剂能够减小水泥净浆的化学结合水量;龄期为3d时,掺减缩剂的净浆中Ca(OH)2的含量明显低于空白样的,28d时与空白样的相当;减缩剂能够减小水泥砂浆中多害孔和有害孔的孔体积,增加无害孔的孔体积.另外还对减缩剂在水泥基材料中存在的形态提出设想.
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| 关 键 词： | 水泥基材料 减缩剂 水化 孔结构 |
EFFECT OF SHRINKAGE REDUING ADMIXTURE ON HYDRATION AND PORE STRUCTURE OF CEMENT-BASED MATERIALS |
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| ZHANG Zhibin,XU Lingling,TANG Mingshu.EFFECT OF SHRINKAGE REDUING ADMIXTURE ON HYDRATION AND PORE STRUCTURE OF CEMENT-BASED MATERIALS[J].Journal of The Chinese Ceramic Society,2009,37(7). |
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| Authors: | ZHANG Zhibin XU Lingling TANG Mingshu |
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| Affiliation: | College of Materials Science and Engineering;Nanjing University of Technology;Nanjing 210009;China |
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| Abstract: | The effect of shrinkage reducing admixture (SRA) on hydration process and pore structure of cement-based materials was studied. The hydration heat, chemically combined water and Ca(OH)2 content of cement paste and pore structure of mortar were measured by isothermal calorimeter, gravimetric method, X-ray diffraction and mercury intrusion porosimetry. The results indicate that the SRA has a slight retarding effect on hydration of cement, and the hydration of paste with and without the SRA tended to be the sa... |
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| Keywords: | cement-based materials shrinkage reducing admixture hydration pore structure |
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