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与压汞法相比，利用水蒸气吸附测量法对含玄武岩集料的浆体和混凝土进行孔隙率测定的重新评估

Reassessment of Porosimetry Determinations Using Water Vapor Sorption Measurements for Pastes and Concretes Containing Basaltic Aggregates Compared to the Mercury Intrusion Method.

作者信息

Rodríguez-Brito Natalia, Blanco-Peñalver Concepción, Souto Ricardo M, Andrade Carmen, Santana Juan J

机构信息

Consejería de Obras Públicas y Transportes, Gobierno de Canarias, 38270 La Laguna, Spain.

Department of Chemistry, Universidad de La Laguna, P.O. Box 456, 38200 La Laguna, Spain.

出版信息

Materials (Basel). 2025 May 13;18(10):2257. doi: 10.3390/ma18102257.

DOI:10.3390/ma18102257
PMID:40428994
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12113095/
Abstract

Concrete porosity is one of the fundamental properties for the structural characterization of cementitious materials. This study compares porosity data obtained with dynamic water vapor sorption (DWVS) with the more commonly used mercury intrusion porosimetry (MIP) method for a wide range of concrete samples made with basaltic aggregates, typical of the Canary Islands, which are porous. The objective was to propose an alternative method for routine concrete monitoring that avoids the use of a hazardous substance such as mercury. The results reveal fundamental differences between the MIP and water-accessible porosimetry (WAP) data, although a correlation between the methods was revealed where MIP = 1.18 × WAP. The study was completed by an analysis of the relationships between the porosity and the characteristics and properties of concrete (water/cement ratio and strength), as well as the calculation of the tortuosity factor and a frost durability factor.

摘要

混凝土孔隙率是水泥基材料结构表征的基本特性之一。本研究将动态水蒸气吸附（DWVS）获得的孔隙率数据与更常用的压汞法（MIP）进行了比较，该研究针对一系列由加那利群岛典型的玄武岩骨料制成的多孔混凝土样品。目的是提出一种用于常规混凝土监测的替代方法，避免使用汞等有害物质。结果揭示了MIP和水可及孔隙率法（WAP）数据之间的根本差异，尽管两种方法之间存在相关性，即MIP = 1.18×WAP。该研究通过分析孔隙率与混凝土特性和性能（水灰比和强度）之间的关系以及曲折因子和抗冻耐久性因子的计算得以完成。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3746/12113095/ab34718be03a/materials-18-02257-g018.jpg
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本文引用的文献

1
Note on a Method of Determining the Distribution of Pore Sizes in a Porous Material.关于一种测定多孔材料孔径分布方法的说明
Proc Natl Acad Sci U S A. 1921 Apr;7(4):115-6. doi: 10.1073/pnas.7.4.115.
2
Mercury Intrusion Porosimetry and Image Analysis of Cement-Based Materials.水泥基材料的压汞孔隙率测定法及图像分析
J Colloid Interface Sci. 1999 Mar 1;211(1):39-44. doi: 10.1006/jcis.1998.5986.