Study of the Gap Parameters of Cement Mortar Specimens Based on X-ray Tomography

被引：0

作者：

Kovacs, Andras ^{[1
]}

机构：

[1] Univ Pannonia, Inst Mat Engn, Fac Engn, Egyet St 10, H-8200 Veszprem, Hungary

来源：

PERIODICA POLYTECHNICA-CHEMICAL ENGINEERING | 2024年 / 68卷 / 04期

关键词：

concrete; w/c ratio; gap parameter; X-ray tomography; micro-CT; COMPRESSIVE STRENGTH; PORE STRUCTURE; COMPUTED-TOMOGRAPHY; WELL CEMENT; CONCRETE; POROSITY; PERMEABILITY; PASTES; RATIO; MICROSTRUCTURE;

D O I：

10.3311/PPch.38379

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Concrete is one of the most widely used structural materials next to steel. This justifies a detailed study of the material structure to understand the influence of the production parameters on the properties of the concrete. The pore structure of concretes has a major influence on their practical use, as it impacts their resistance to environmental degradation (e.g., frost resistance). In the present study, I have investigated concrete and cement mortar specimens with different water-cement ratios using micro-CT (or micro X-ray tomography) to determine the pore structure and the pore gap parameters of the specimens. It can be concluded that with an increasing water-cement ratio the overall porosity of the samples and the number of large pores (1 mm3) show a decreasing trend, in contrast, the gap parameter shows an enhancing trend. It can also be concluded that any pore-forming additives cause significant changes in the structure.

引用

页码：523 / 530

页数：8

共 43 条

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