含掺合料混凝土水化产物体积分数计算及其影响因素

Powers理论仅提出针对纯水泥水化产物体积的计算方法,为研究掺加矿物掺合料后的胶凝材料的水化产物体积的影响,该文基于水泥水化基本原理及矿物掺合料的反应机制,提出含掺合料胶凝材料的水化产物体积的计算公式,并将其应用于计算掺合料为0时凝胶材料水化产物的体积分数,与基于Powers理论模型的计算结果对比来验证该文提出的方法的可靠性,在此基础上,进一步研究水胶比、掺合料种类及其比例对胶凝材料水化产物体积的影响。结果表明：矿物掺合料掺量的降低和水胶比的增加都能促进复合水泥基材料的水化,相对而言,矿物掺合料增量对胶凝材料水化程度的影响较水胶比要大。复合胶凝材料中CSH、铝酸盐相AF和CH的体积分数均低于...

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Bibliographic Details
Published in农业工程学报 Vol. 32; no. 3; pp. 48 - 54
Main Author 吴福飞 董双快 宫经伟 陈亮亮 李东生 侍克斌
Format Journal Article
LanguageChinese
Published 新疆农业大学水利与土木工程学院,乌鲁木齐,830052%新疆农业大学草业与环境科学学院,乌鲁木齐,830052 2016
Subjects
体积分数
掺合料
水化产物
水化程度
水泥
矿物
胶凝材料
minerals
cements
矿物
admixture
体积分数
掺合料
水化程度
胶凝材料
cementitious material
volume fraction
水化产物
hydration extent
hydration products
水泥
Online AccessGet full text
ISSN1002-6819
DOI10.11975/j.issn.1002-6819.2016.03.008

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Summary:Powers理论仅提出针对纯水泥水化产物体积的计算方法,为研究掺加矿物掺合料后的胶凝材料的水化产物体积的影响,该文基于水泥水化基本原理及矿物掺合料的反应机制,提出含掺合料胶凝材料的水化产物体积的计算公式,并将其应用于计算掺合料为0时凝胶材料水化产物的体积分数,与基于Powers理论模型的计算结果对比来验证该文提出的方法的可靠性,在此基础上,进一步研究水胶比、掺合料种类及其比例对胶凝材料水化产物体积的影响。结果表明：矿物掺合料掺量的降低和水胶比的增加都能促进复合水泥基材料的水化,相对而言,矿物掺合料增量对胶凝材料水化程度的影响较水胶比要大。复合胶凝材料中CSH、铝酸盐相AF和CH的体积分数均低于水泥浆体,未水化颗粒和毛细孔的体积均高于水泥浆体。分析发现,未水化颗粒、CSH凝胶和毛细孔的体积分数分别受水胶比×掺量×矿物掺合料种类（60.33%）、水胶比×矿物掺合料种类（91.79%）和水胶比（89.23%）的影响最大,CH和铝酸盐相AF的体积分数受掺量的影响最大,分别为6.17%和16.65%。研究可为锂渣、粉煤灰和钢渣在水泥混合材和混凝土掺合料中的应用提供科学依据,同时达到降低能耗和节约资源的目的。
Bibliography:11-2047/S
Wu Fufei, Dong Shuangkuai, Gong Jingwei, Chen Liangliang, Li Dongsheng, Shi Kebin （1. College of Civil and Hydraulic Engineering, Xinjiang Agricultural University, Urumqi 830052, China; 2. College of Pratacultural and Environmental Sciences, Xinjiang Agricultural University, Urumqi 830052, China）
Powers theory proposes calculation method for the pure volume of cement hydration products, which does not apply to calculate the volume of cementitious materials with mineral admixture. The formula of cementitious materials volume was proposed that based on the basic principles of cement and mineral admixture hydration, and the proposed method of reliability was verified by the results of Powers theoretical model and volume fraction of cement hydration products. On this basis, the factor such as water-cement ratio, the ratio of admixture and types was further researched for the volumes of cementitious materials hydration products. Mixture in test were designed 2 water-cement ratio （0.30 and 0.40, respectivel
ISSN:1002-6819
DOI:10.11975/j.issn.1002-6819.2016.03.008