|本期目录/Table of Contents|

[1]肖承绎,肖莲珍*.矿粉对水泥水化特性的影响及其相关性的研究[J].武汉工程大学学报,2023,45(01):64-70.[doi:10.19843/j.cnki.CN42-1779/TQ.202110008]
 XIAO Chengyi,XIAO Lianzhen *.Study on Effect of Slag on Hydration Characteristics ofCement and Their Correlations[J].Journal of Wuhan Institute of Technology,2023,45(01):64-70.[doi:10.19843/j.cnki.CN42-1779/TQ.202110008]
点击复制

矿粉对水泥水化特性的影响及其相关性的研究(/HTML)
分享到:

《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
45
期数:
2023年01期
页码:
64-70
栏目:
材料科学与工程
出版日期:
2023-02-28

文章信息/Info

Title:
Study on Effect of Slag on Hydration Characteristics of
Cement and Their Correlations

文章编号:
1674 - 2869(2023)01 - 0064 - 07
作者:
肖承绎肖莲珍*
武汉工程大学材料科学与工程学院,湖北 武汉 430205
Author(s):
102 102); background-color: rgb(255 255 255); font-family: Arial Verdana sans-serif; font-size: 12pt;">XIAO ChengyiXIAO Lianzhen 102 102); font-family: Arial Verdana sans-serif;">*
School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan 430205,China
关键词:
抗压强度水化热水化度电阻率固体体积分数
Keywords:
compressive strengthhydration heathydration degreeelectrical resistivitysolid volume fraction
分类号:
TQ172
DOI:
10.19843/j.cnki.CN42-1779/TQ.202110008
文献标志码:
A
摘要:
为研究矿粉对水泥早期水化特性的影响,采用非接触式电阻率和水化热等方法进行表征。利用不同活性矿粉水泥复合浆体水化热测量结果定量计算矿粉对水泥水化的作用和复合浆体的水化度;结合水化度和水化动力学模型计算复合浆体固体体积分数;并研究了3 d电阻率与抗压强度间的相关性。结果表明:与其它掺量的样品相比,矿粉质量分数为20%的复合浆体样品在3、7和28 d的抗压强度均最大。提出了一个参数K值来表示矿粉对复合浆体中水泥水化的促进作用大小,参数K随复合浆体中矿粉质量分数的增加而增大。电阻率微分曲线与水化放热速率曲线有相似的变化规律且有相对应特征点。电阻率与固体体积分数遵行指数函数关系,3 d的电阻率与3 d的抗压强度呈现良好的线性关系。由此,利用电阻率法可以表征矿粉对水泥浆体水化过程的影响,并预测样品中固体体积分数和样品的抗压强度。

Abstract:
The non-contact electrical resistivity and hydration heat methods were used to study the influence of slag on early hydration characteristics of cement. The hydration heat test results of different active slag-cement composite pastes were used to quantitatively calculate the effect of slag on cement hydration and the hydration degree of the composite pastes. The solid volume fraction of the composite pastes was calculated based on the hydration degree results and hydration kinetics model. The correlation between the compressive strength and the electrical resistivity at 3 d was studied. Compared with the other samples,the compressive strength of the samples with slag mass fraction of 20% was the highest at each age of 3,7 and 28 d. A parameter K was proposed to represent the promotion effect of slag on cement hydration in composite pastes,and the parameter K value increases with the increase of slag mass fraction in the composite pastes. The electrical resistivity differential curves have similar development trend and characteristic points to the hydration heat release rate curves. The relationship of the electrical resistivity and solid volume fraction follows an exponential function,and the electrical resistivity shows a good linear relationship with the compressive strength at 3 d. Therefore,the resistivity method can be used to characterize the influence of slag on the hydration process of cement pastes and to predict solid volume fraction and compressive strength of cement based materials.

参考文献/References:

[1] HUANG Z Y, HUANG Y S, LIAO W Y, et al. Development of limestone calcined clay cement concrete in South China and its bond behavior with steel reinforcement [J]. Journal of Zhejiang University-Science A(Applied Physics & Engineering),2020,21(11):892-907.

[2] REGOURD M,THOMASSIN J H,BAILLIF P,et al. Blast-furnace slag hydration. Surface analysis [J]. Cement and Concrete Research,1983,13(4):549-556.
[3] 张雄,鲁辉,张永娟,等. 矿渣活性激发方式的研究进展[J]. 西安建筑科技大学学报(自然科学版),2011,43(3):379-384.
[4] SAJEDI F, RAZAK H A. Comparison of different methods for activation of ordinary Portland cement-slag mortars [J]. Construction and Building Materials,2011,25(1):30-38.
[5] Lü X S, QIN Y,LIANG H, et al. Effects of modifying agent on rheology and workability of alkali-activated slag paste for 3D extrusion forming [J]. Construction and Building Materials,2021,302:124062:1-11.
[6] 陶俊,唐建辉,李平,等.温度和激发剂浓度对碱激发矿渣净浆流变特性的影响[J]. 硅酸盐通报,2021,40(10):3442-3449.
[7] MA M T,MEHDIZADEH H,GUO M Z,et al. Effect of direct carbonation routes of basic oxygen furnace slag (BOFS) on strength and hydration of blended cement paste [J]. Construction and Building Materials,2021,304:124628:1-10.
[8] 贺行洋,张晨,苏英,等.大掺量矿渣-水泥复合胶凝材料体系的性能研究[J]. 混凝土,2019(9):83-87.
[9] LI Z J,WEI X S,LI W L. Preliminary interpretation of Portland cement hydration process using resistivity measurements[J]. ACI Materials Journal,2003,100(3):253-257.
[10] 蒋兴教,肖莲珍. 无电极电阻率法研究水泥基复合材料的导电机理[J]. 武汉工程大学学报,2020,42(6):637-641.
[11] ZHU X H, ZHANG Z L,YANG K,et al. Characteri-sation of pore structure development of alkali-activated slag cement during early hydration using electrical responses [J]. Cement and Concrete Composites,2018,89:139-149.
[12] YOUSUF F,WEI X S. Investigation of the early-age microstructural development of hydrating cement pastes through electrical resistivity measurements [J]. Case Studies in Construction Materials, 2020,13:e00391:1-16.
[13] XIAO L Z, WEI X S,WANG S N. Alternating current method to determine chloride diffusion coefficient of hardened paste and concrete [J]. Magazine of Concrete Research,2015,67(1):27-32.
[14] 魏小胜,肖莲珍.用电阻率法确定混凝土结构形成的发展阶段及结构形成动力学参数[J]. 硅酸盐学报,2013,41(2):171-179.
[15] WEI X S, XIAO L Z. Kinetics parameters of cement hydration by electrical resistivity measurement and calorimetry [J]. Advances in Cement Research,2014,26(4):187-193.
[16] XIAO L Z. Interpretation of hydration process of concrete based on electrical resistivity measurement [D]. Hong Kong:Hong Kong University of Science and Technology,2007.
[17] TAO J Y,WEI X S. Effect of ground granulated blast-furnace slag on the hydration and properties of cement paste [J]. Advances in Cement Research,2019,31(6):251-260.
[18] 厉超. 矿渣、高/低钙粉煤灰玻璃体及其水化特性研究[D].北京:清华大学,2011.

相似文献/References:

备注/Memo

备注/Memo:
收稿日期:2021-10-12
基金项目:武汉工程大学第十二届研究生教育创新基金(CX2020155)
作者简介:肖承绎,硕士研究生。E-mail:1136800013@qq.com
*通讯作者:肖莲珍,博士,教授。E-mail:279997095@qq.com
引文格式:肖承绎,肖莲珍. 矿粉对水泥水化特性的影响及其相关性的研究[J]. 武汉工程大学学报,2023,45(1):64-70.

更新日期/Last Update: 2023-03-14