钙铝石（C12A7）对普通硅酸盐水泥浆体电阻率的影响

头部文案

发布时间：2020-01-06 00:00:00

全国建材科技期刊
全国中文核心期刊
中国科技论文统计源期刊
万方数据-数字化期刊群入网期刊
中国学术期刊（光盘版）全文收录期刊

华东地区优秀科技期刊
江苏省期刊方阵“双效期刊”
中国期刊网全文收录期刊
中国科技期刊数据库全文收录期刊



钙铝石（C12A7）对普通硅酸盐水泥浆体电阻率的影响

Influence of mayenite(C12A7) on electrical resistivity of ordinary Portland cement pastes

2023年第10期

钙铝石；电阻率；Hyperbolic方法；浆体；掺量

Mayenite; Resistivity; Hyperbolic method; Paste; Dosage

2023年第10期

10.19761/j.1000-4637.2023.10.011.05

国家自然科学基金项目（U2040222）；长江科学院中央级公益性科研院所基本科研项目（CKSF2019374/CL、CKSF2021456/CL）。

李杨1，2，彭子凌1，何真2

1.长江科学院材料与结构研究所，湖北武汉 430010；2.武汉大学水资源与水利工程科学国家重点实验室，湖北武汉 430072

李杨1，2，彭子凌1，何真2

李杨,彭子凌,何真.钙铝石（C12A7）对普通硅酸盐水泥浆体电阻率的影响[J].混凝土与水泥制品,2023(10):11-15.

LI Y,PENG Z L,HE Z.Influence of mayenite(C12A7) on electrical resistivity of ordinary Portland cement pastes[J].China Concrete and Cement Products,2023(10):11-15.

浏览量:

1000

摘要：通过混凝土非接触式电阻率测量技术，研究了钙铝石（C12A7）掺量（0、2.5%、5.0%、7.5%）对普通硅酸盐水泥浆体电阻率及电阻率特性的影响，并计算了水泥浆体完全水化时的极限电阻率值。结果表明：C12A7能够促进离子沉淀和水化产物的生成，加快AFt向AFm的转变，使浆体较早进入硬化期和离子扩散阶段；当C12A7掺量不超过5.0%时，浆体的电阻率随C12A7掺量的增加而增大；当C12A7掺量从5.0%增加到7.5%时，浆体的电阻率反而减小。 Abstract: The effect of mayenite(C12A7) content(0, 2.5%, 5.0%, 7.5%)on the resistivity and resistivity characteristics of the ordinary Portland cement pastes was investigated by the meaning of non-contact resistivity measurement techniques for concrete, and the limiting resistivity values were calculated when the cement paste was fully hydrated. The results show that C12A7 can promote the generation of ionic precipitation and hydration products, and accelerate the transition from AFt to AFm, allowing the pastes to enter the hardening stage and ion diffusion stage earlier. When the dosage of C12A7 does not exceed 5.0%, the resistivity of the pastes increases with the increase of C12A7. When the dosage of C12A7 increases from 5.0% to 7.5%, the resistivity of the paste decreases instead.

英文名 : Influence of mayenite(C12A7) on electrical resistivity of ordinary Portland cement pastes

刊期 : 2023年第10期

关键词 : 钙铝石；电阻率；Hyperbolic方法；浆体；掺量

Key words : Mayenite; Resistivity; Hyperbolic method; Paste; Dosage

刊期 : 2023年第10期

DOI : 10.19761/j.1000-4637.2023.10.011.05

文章编号 :

基金项目 : 国家自然科学基金项目（U2040222）；长江科学院中央级公益性科研院所基本科研项目（CKSF2019374/CL、CKSF2021456/CL）。

作者 : 李杨1，2，彭子凌1，何真2

单位 : 1.长江科学院材料与结构研究所，湖北武汉 430010；2.武汉大学水资源与水利工程科学国家重点实验室，湖北武汉 430072

李杨1，2，彭子凌1，何真2

李杨,彭子凌,何真.钙铝石（C12A7）对普通硅酸盐水泥浆体电阻率的影响[J].混凝土与水泥制品,2023(10):11-15.

LI Y,PENG Z L,HE Z.Influence of mayenite(C12A7) on electrical resistivity of ordinary Portland cement pastes[J].China Concrete and Cement Products,2023(10):11-15.





摘要

参数

结论

参考文献

引用本文

摘要：通过混凝土非接触式电阻率测量技术，研究了钙铝石（C₁₂A₇）掺量（0、2.5%、5.0%、7.5%）对普通硅酸盐水泥浆体电阻率及电阻率特性的影响，并计算了水泥浆体完全水化时的极限电阻率值。结果表明：C₁₂A₇能够促进离子沉淀和水化产物的生成，加快AFt向AFm的转变，使浆体较早进入硬化期和离子扩散阶段；当C₁₂A₇掺量不超过5.0%时，浆体的电阻率随C₁₂A₇掺量的增加而增大；当C₁₂A₇掺量从5.0%增加到7.5%时，浆体的电阻率反而减小。

Abstract: The effect of mayenite(C₁₂A₇) content(0, 2.5%, 5.0%, 7.5%)on the resistivity and resistivity characteristics of the ordinary Portland cement pastes was investigated by the meaning of non-contact resistivity measurement techniques for concrete, and the limiting resistivity values were calculated when the cement paste was fully hydrated. The results show that C₁₂A₇ can promote the generation of ionic precipitation and hydration products, and accelerate the transition from AFt to AFm, allowing the pastes to enter the hardening stage and ion diffusion stage earlier. When the dosage of C₁₂A₇ does not exceed 5.0%, the resistivity of the pastes increases with the increase of C₁₂A₇. When the dosage of C₁₂A₇ increases from 5.0% to 7.5%, the resistivity of the paste decreases instead.

扫二维码用手机看

[1] ROVNANIK P.Influence of C12A7 admixture on setting properties of fly ash geopolymer[J].CERAMICS-SILIKATY,2010,54(4):362-367.
[2] PARK H G,SUNG S K,PARK C G,et al.Influence of a C12A7 mineral-based accelerator on the strength and durability of shotcrete[J].Cement and Concrete Research,2007,38(3):379-385.
[3] WON J P,HWANG U J,KIM C K,et al.Mechanical performance of shotcrete made with a high-strength cement-based mineral accelerator[J].Construction and Building Materials,2013,49(12):175-183.
[4] HAN S C,HWANG B C,MOON W S,et al.Development and performance evaluation of improved C12A7 based mineral accelerator recycling electric arc furnace reducing slag[J].Journal of Korea Society of Waste Management,2015,32(2):140-145.
[5] MAJUMBAR A J,SINGH B,EDMONDS R N.Hydration of mixtures of C12A7 and granulated blast furnace slag [J].Cement and Concrete Research,1990,20(2):197-208.
[6] 张江涛,王栋民,王奕仁,等.非晶态铝酸钙基速凝剂的制备及其性能研究[J].混凝土与水泥制品,2016(8):1-4.
[7] 李文平,王栋民,张江涛,等.非晶态铝酸钙系低碱粉体速凝剂的性能及适应性研究[J].新型建筑材料,2017,44(9):40-43.
[8] HOSONO H,ABE Y.Occurrence of Superoxide radical Ion in crystalline calcium aluminate 12CaO·7Al2O3 prepared via solid-state reactions [J].Inorganic Chemistry,2002,26(8):1192-1195.
[9] 中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.水泥标准稠度用水量、凝结时间、安定性检验方法:GB/T 1346—2011[J].北京:中国标准出版社,2011.
[10] 刘志勇,詹镇峰.混凝土电阻率及其在钢筋混凝土耐久性评价中的应用研究[J].混凝土,2006(10):13-16.
[11] 何真,李洋,蔡新华,等.Na+和K+对水泥基材料早期收缩性能的影响[J].水利学报,2016,47(11):1345-1351.
[12] WEI X S,XIAO L Z,LI Z J.Hyperbolic method to analyze the electrical resistivity curve of portland cements with superplastieizer[J].Journal of Wuhan University of Technology (Material Science Edition),2008,23(2):245-248.
[13] HE Z,LI Y.The influence of mayenite employed as a functional component on hydration propertiesof ordinary Portland cement[J].Materials(Basel, Switzerland),2018,11(10):1958-1958.
[14] 肖莲珍,李宗津,魏小胜.用电阻率法研究新拌混凝土的早期凝结和硬化[J].硅酸盐学报,2005,33(10):1271-1275.
[15] 隋同波,曾晓辉,谢友均,等.电阻率法研究水泥早期行为[J].硅酸盐学报,2008(4):431-435.
[16] 赵卓,曾力,王东炜.混凝土电阻率与氯离子扩散系数间的相关性试验[J].郑州大学学报(工学版),2013,34(6):76-79.
[17] 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.
[18] TANG S W,CAI X H,HE Z,et al.Hydration process of fly ash blended cement pastes by impedance measurement[J].Construction and Building Materials,2016,113:939-950.
[19] 廖宜顺,李国卫,魏小胜.电阻率法研究快硬硫铝酸盐水泥的水化过程[J].武汉理工大学学报,2009,31(17):74-77.

上一个

船闸大体积混凝土抗裂性能提高试验研究

下一个

水下不分散灌浆料的制备及性能研究

头部文案

钙铝石（C12A7）对普通硅酸盐水泥浆体电阻率的影响

相关文件