[1]孙国文,孙伟,张云升,等.硅酸盐水泥水化产物体积分数定量计算[J].东南大学学报(自然科学版),2011,41(3):606-610.[doi:10.3969/j.issn.1001-0505.2011.03.034]
 Sun Guowen,Sun Wei,Zhang Yunsheng,et al.Quantitative calculation on volume fraction of hydrated products in Portland cement[J].Journal of Southeast University (Natural Science Edition),2011,41(3):606-610.[doi:10.3969/j.issn.1001-0505.2011.03.034]
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硅酸盐水泥水化产物体积分数定量计算()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
41
期数:
2011年第3期
页码:
606-610
栏目:
材料科学与工程
出版日期:
2011-05-20

文章信息/Info

Title:
Quantitative calculation on volume fraction of hydrated products in Portland cement
作者:
孙国文孙伟张云升刘志勇
(东南大学江苏省土木工程材料重点实验室,南京 211189)
Author(s):
Sun GuowenSun WeiZhang YunshengLiu Zhiyong
(Jiangsu Key Laboratory of Construction Materials, Southeast University, Nanjing 211189, China)
关键词:
硅酸盐水泥体积分数水化产物Powers模型Jennings-Tennis模型
Keywords:
Portland cement volume fraction hydrated products Powers model Jennings-Tennis model
分类号:
TU528
DOI:
10.3969/j.issn.1001-0505.2011.03.034
摘要:
为了研究硬化水泥浆体微观结构与其宏观性能之间的定量关系,基于Jennings-Tennis(J-T)模型提出了2种C-S-H的划分,给出了硅酸盐水泥水化各产物体积分数计算公式; 采用水灰质量比为0.23,0.35和0.53的硬化水泥浆体对公式进行验证并与Powers模型计算结果进行比较.结果表明:水灰质量比为0.23,0.35和0.53的硬化水泥浆体产物中低密度与高密度C-S-H凝胶的体积分数之比分别为0.24,0.54和3.24; 其中毛细孔和未水化水泥的体积分数与Powers模型所得的结果一致,验证了体积分数计算公式的合理性.
Abstract:
In order to investigate the relationship between the microstructure of hydrated cement paste and its effective performances, based on the Jennings-Tennis (J-T) model on distinction of two kinds of calcium silicate hydrate(C-S-H), quantitative formulas for volume fraction of hydrated products in Portland cement are given. The harden cement paste with water to cement ratio of 0. 23, 0. 35 and 0. 53 are used to validate the formulas proposed and the results are compared with those obtained by Powers model. It is shown that the volume fraction ratio of low density C-S-H to high density C-S-H in hydrated cement paste with water to cement ratio of 0. 23, 0. 35 and 0. 53 are 0. 24, 0. 54 and 3. 24, respectively. The volume fraction of capillary porosity and unhydrated cement is in agreement with that from Powers model, which verifies the reasonableness of the calculation formulas proposed.

参考文献/References:

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  Li Chunjiang,Yang Qingshen.Micro-mechanical model and property evolution for hydration of cements[J].Acta Materiae Compositae Sinica,2006,23(1):117-123.(in Chinese)
[2] Lee J,Xi Y P,Willam K,et al.A multiscale model for modulus of elasticity of concrete at high temperatures [J].Cement and Concrete Research,2009,39(9):754-762.
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[4] Tennis P D,Jennings H M.A model for two types of calcium silicate hydrate in the microstructure of Portland cement pastes[J].Cement and Concrete Research,2000,30(6):855-863.
[5] Constantinides G,Ulm F J.The effect of two types of C-S-H on the elasticity of cement-based materials:results from nanoindentation and micromechanical modeling [J].Cement and Concrete Research,2004,34(1):67-80.
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[7] Jennings H M.Refinements to colloid model of C-S-H in cement:CM-II [J].Cement and Concrete Research,2008,38(3):275-289.
[8] Taylor H F W.A method for predicting alkali ion concentration in cement pore solutions [J].Adv Cem Res,1987,1(1):5-17.
[9] 张云升,孙伟,郑克仁,等.水泥-粉煤灰浆体的水化反应进程 [J].东南大学学报:自然科学版,2006,36(1):118-123.
  Zhang Yunshen,Sun Wei,Zheng Keren,et al.Hydration process of Portland cement-fly ash paste [J].Journal of Southeast University:Natural Science Edition,2006,36(1):118-123.(in Chinese)

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备注/Memo

备注/Memo:
作者简介:孙国文(1977—),男,博士生;孙伟(联系人),女,教授,博士生导师,中国工程院院士,sunwei@seu.edu.cn.
基金项目:国家重点基础研究发展计划(973计划)资助项目(2009CB623200)、国家高技术研究发展计划(863计划) 资助项目(2008AA030794).
引文格式: 孙国文,孙伟,张云升,等.硅酸盐水泥水化产物体积分数定量计算[J].东南大学学报:自然科学版,2011,41(3):606-610.[doi:10.3969/j.issn.1001-0505.2011.03.034]
更新日期/Last Update: 2011-05-20