文献类型：期刊文献

英文题名：The Study of the Three-Parameter Normal Distribution Characteristics of the Pore Structure in C80 High-Performance Self-Compacting Concrete (HPSCC)

作者：Bao, Lixin Xu, Guihong Li, Hui Xin, Chunhong Li, Hejun He, Mingwei Liu, Ciqi

第一作者：Bao, Lixin

通信作者：Xu, GH[1]

机构：[1]Chongqing Jiaotong Univ, Sch Civil Engn, Chongqing 408527, Peoples R China;[2]Guizhou Inst Technol, Sch Civil Engn, Guiyang 550001, Peoples R China;[3]Chongqing White Horse Shipping Dev Co Ltd, Chongqing 408527, Peoples R China;[4]Guizhou Prov Inst Qual Inspect & Testing Bldg Mat, Guiyang 550014, Peoples R China

第一机构：Chongqing Jiaotong Univ, Sch Civil Engn, Chongqing 408527, Peoples R China

通信机构：corresponding author), Guizhou Inst Technol, Sch Civil Engn, Guiyang 550001, Peoples R China.|贵州理工学院土木工程学院;贵州理工学院;

年份：2024

卷号：8

期号：12

外文期刊名：JOURNAL OF COMPOSITES SCIENCE

收录：Scopus(收录号：2-s2.0-85213441571);WOS:【ESCI(收录号:WOS:001386747400001)】；

基金：This study was supported by the China Water Resources and Hydropower Fourth Engineering Bureau Co., Ltd., Fund (Code: ZSSJ-BM-JSFWHT-[2023]-15); the National Natural Science Foundation of China (Project Code, 52268065); the Natural Science Foundation of Guizhou Province (Project Code, QIAN KE HEJICHU-ZK[2022]-027, QIAN KE HEJICHU-ZK[2021]-284); and the Guizhou Province innovative high-level talent project (Project Code: QIAN KE HE Platform Talents-GCCQIAN KE[2023]053).

语种：英文

外文关键词：C80 high-performance self-compacting concrete (HPSCC); pore structure; three-parameter normal distribution; CT imaging analysis

摘要：To investigate the distribution characteristics of the micropore structure in high-performance self-compacting concrete (C80), high-resolution X-ray computed tomography, AVIZO software (version 2024.1), and scanning electron microscopy were employed to observe and analyze the internal pore structure of C80 self-compacting concrete specimens. The main conclusions are as follows: There is a large number of pore structures within the carbonate rock-based high-performance self-compacting concrete. At a testing precision range of 10 mu m, the micropores exhibit a circular feature with good overall circularity. Observations through SEM, scanning electron microscopy, reveal that there are micro-cracks or interconnected crack structures within the high-performance concrete, with widths ranging from 0.5 to 2 mu m, and the sample contains tiny voids of 3 to 10 mu m. A statistical analysis of the micropores within the carbonate rock-based self-compacting concrete indicates that the pore diameter follows a three-parameter normal distribution. Due to the limitations of experimental observation and precision, the experimental statistical results show a positively skewed (high peak and left-skewed) phenomenon. This paper proposes a "correction of skewed peak" method for the analysis and discussion of the calculation of the "third parameter C" in the statistical results. The results show that the method proposed in this paper can quickly, objectively, and optimally determine the third parameter, compensating for the missing data not accounted for below 10 mu m and the limitations of the finite number of experimental samples, providing a reference for examining the distribution of pores within concrete.