Measurement and Calculation of Water Content in Hydrating Cement-Based Composites Using Dielectric Constant

XU Wenhao; YANG Liping; HOU Dongwei

doi:10.3724/j.gyjzG24070701

Volume 56 Issue 6

Jun. 2026

Turn off MathJax

Article Contents

Article Navigation > INDUSTRIAL CONSTRUCTION > 2026 > 56(6): 265-272

XU Wenhao, YANG Liping, HOU Dongwei. Measurement and Calculation of Water Content in Hydrating Cement-Based Composites Using Dielectric Constant[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(6): 265-272. doi: 10.3724/j.gyjzG24070701

Citation:

XU Wenhao, YANG Liping, HOU Dongwei. Measurement and Calculation of Water Content in Hydrating Cement-Based Composites Using Dielectric Constant[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(6): 265-272. doi: 10.3724/j.gyjzG24070701

Citation:

PDF( 805 KB)

Measurement and Calculation of Water Content in Hydrating Cement-Based Composites Using Dielectric Constant

doi: 10.3724/j.gyjzG24070701

1. Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China;
2. Shanghai Key Laboratory for Digital Maintenance of Building and Infrastructure, Shanghai 200240, China

Received Date: 2024-07-07
Available Online: 2026-07-06

Abstract

Abstract

In order to describe the changes in water content during the hydration process of cement-based materials， a monitoring system for the dielectric constant of cement-based materials was established based on the theory of parallel plate capacitance. The relationship between the dielectric constant and water content was investigated， and the effects of water-cement ratios and mineral admixtures such as fly ash， silica fume， and slag on the hydration water consumption were analyzed. The results indicated that the dielectric constant-based method was reasonable and accurate for determining water content. During the hydration of cement-based materials， the water content decreased rapidly at first， and then the rate of decrease slowed down. A higher water-cement ratio accelerated the early hydration rate and prolonged the hydration duration， which was characterized by a higher rate of water consumption. The incorporation of fly ash into the cement system reduced the water consumption rate as its dosage increased， whereas silica fume exhibited the opposite effect. Although slag generally enhanced the hydration rate and increased water consumption， a higher dosage of slag ultimately led to a reduction in water consumption.
- cementitious composites,
- hydration rate,
- dielectric constant,
- water content

FullText(HTML)

References(36)

References

[1]	宋致科，张国辉，顾艳霜，等.含水率对不同强度等级混凝土力学性能的影响试验研究[J].混凝土与水泥制品，2023，（10）:32-36.
[2]	ZHUANG R，LI Y，LIU Q，et al.Effect of moisture content on properties，microstructure and carbon sequestration of CO₂-cured cement mortar mixed with chelator[J].Journal of Building Engineering，2024，87:109080.
[3]	黄嘉钰，刘元珍，王朝旭，等.再生保温混凝土内部湿度与干燥收缩预测模型[J].复合材料学报，2022，39（10）:4788-4800.
[4]	张治国，叶铜，朱正国，等.波浪作用下海底隧道氯离子侵蚀劣化时变分析[J].岩土工程学报，2023，45（7）:1323-1332.
[5]	SOLEIMANI H，SIKIRU S，ABBAS Z，et al.Exploring moisture content measurement using an open-ended coaxial sensor:a method of moments approach[J].Sensors and Actuators A-Physical，2024，367:114990.
[6]	蒋超，晏长根，辛远，等.水泥土电阻率对测试频率与含水率的响应特征试验研究[J].公路交通科技，2023，40（7）:52-59.
[7]	李方贤，李学文，余其俊.近红外线法测量新拌混凝土含水量[J].广东建材，2017，33（1）:25-27.
[8]	WU G，HU Y，QIAO X，et al.Design and measurement of microwave resonant cavity for trace moisture determination of polymer powder[J].Chinese Journal of Sensors and Actuators，2024，37（5）:913-915.
[9]	吕侃俊，孔明，刘璐，等.一种基于电容传感器的水泥混凝土含水率的测量系统及方法:CN115184414A[P].2022-04-07.
[10]	白云龙.基于BP神经网络的水泥石电容-含水率关系建立[J].科技创新与应用，2023，13（21）:81-84.
[11]	高原，张君，侯东伟.早龄期混凝土湿度应力计算与开裂风险评估[J].工程力学，2012，29（2）:121-128.
[12]	张君，陈浩宇，侯东伟.水泥净浆、砂浆及混凝土早期收缩与内部湿度发展分析[J].建筑材料学报，2011，14（3）:287-292.
[13]	张君，祁锟，侯东伟.基于绝热温升试验的早龄期混凝土温度场的计算[J].工程力学，2009，26（8）:155-160.
[14]	张君，侯东伟.基于内部湿度试验的早龄期混凝土水分扩散系数求解[J].清华大学学报（自然科学版），2009，26（8）:155-160.
[15]	侯东伟，张君，陈浩宇，等.干燥与潮湿环境下混凝土抗压强度和弹性模量发展分析[J].水利学报，2012，43（2）:198-208.
[16]	路新瀛，郭保林，邵新鹏，等.混凝土耐久性在线监测（Ⅱ）:含水量变化[J].混凝土世界，2015（9）:34-37.
[17]	WANG X，DONG B，FENG X，et al.Beam-hardening correction method for quantifying moisture content in cement paste based on X-ray radiography[J].Construction and Building Materials，2024，421:135742.
[18]	倪乐瑚.电介质测量[M].北京:科学出版社，1981.
[19]	龚炽昌.不均匀介质介电常数的计算[J].南京邮电学院学报，1984（1）:60-70.
[20]	高鹏，陈星，王维，等.粉煤灰不同掺量对高性能混凝土耐久性影响研究[J].粘接，2024，51（2）:80-83.
[21]	唐林洋.不同掺量的矿渣粉对混凝土和易性及强度的影响[J].广东建材，2019，35（3）:6-9.
[22]	李明勋，张宇超.不同硅灰掺量对混凝土强度和抗渗性能的影响[J].粉煤灰综合利用，2020，34（4）:99-102.
[23]	国家市场监督管理总局.卡尔·费休容量法水分测定仪:JJG 1154—2018[S].北京:中国质检出版社，2018.
[24]	杨丽萍，程钕，吴标，等.水泥基复合胶凝材料水化过程的半绝热温度测量与表征[C]//2022年工业建筑学术交流会论文集.北京:2022:1216-1221.
[25]	MALTAIS Y，MARCHAND J.Influence of curing temperature on cement hydration and mechanical strength development of fly ash mortars[J].Cement and Concrete Research，1997，27（7）:1009-1020.
[26]	WANG A Q，ZHANG C Z，SUN W.Fly ash effects-II.the active effect of fly ash[J].Cement and Concrete Research，2004，34（11）:2057-2060.
[27]	刘柏君，张国防，郑薇，等.矿物掺合料对泡沫混凝土性能影响的对比研究[J/OL].建筑材料学报，2025[ 2025-11-24].https://link.cnki.net/urlid/31.1764.TU.20240520.1537.003.
[28]	ZHANG Z，ZHANG B，YAN P.Comparative study of effect of raw and densified silica fume in the paste，mortar and concrete[J].Construction and Building Materials，2016，105:82-93.
[29]	ZENG X，DENG Q，LI S，et al.Effects of autogenous shrinkage microcracks on UHPC:insights from a machine learning based crack quantification approach[J].Construction and Building Materials，2024，428:136400.
[30]	HAN F，LYU Y，LIANG T，et al.Modeling thermal conductivity of aerogel-incorporated concrete:a multi-scale approach[J].Construction and Building Materials，2024，450:138605.
[31]	李炳昊，陈超，秦节发，等.水泥-硅灰体系水化和收缩特性研究[J].四川建材，2019，45（12）:29-31.
[32]	ESCALANTE-GARCÍA J I，SHARP J H.Effect of temperature on the hydration of the main clinker phases in portland cements:part Ⅱ，blended cements[J].Cement and Concrete Research，1998，28（9）:1259-1274.
[33]	ZAJAC M，BOLTE G，SKOCEK J，et al.Modelling the effect of the cement components fineness on performance and environmental impact of composite cements[J].Construction and Building Materials，2021，276:122108.
[34]	DU J，LIU Z，CHRISTODOULATOS C，et al.Utilization of off-specification fly ash in preparing ultra-high-performance concrete（UHPC）:mixture design，characterization，and life-cycle assessment[J].Resources，Conservation and Recycling，2022，180:106136.
[35]	LIU S，FANG P，WANG H，et al.Effect of tuff powder on the hydration properties of composite cementitious materials[J].Powder Technology，2021，380:59-66.
[36]	LIANG J，LIAO H，WANG L，et al.Effect of mineral admixtures on the calcium leaching resistance of porous cement stabilized macadam[J].Construction and Building Materials，2024，421:135712.