Evolution of durability and mechanical properties of ordinary portland cement concretes in sulphates attack

IF 0.7 Q3 ENGINEERING, MULTIDISCIPLINARY Engineering Review Pub Date : 2020-05-21 DOI:10.30765/er.40.3.04

Zaidi Narimane, H. Zedira, J. P. Castro-Gomez, B. Bezzazi, A. Talah, Mohammed Amin Benbouras

引用次数: 0

Abstract

Concrete in sulphates environments often undergoes significant alterations that often have significant adverse results on its engineering properties. However, the choice of cement type is a very important factor for concrete exposed in aggressive environment. This research presents the effect of two types of cement on the mechanical and microstructure properties of ordinary concretes exposed in aggressive solution dosed with 5% of gypsum (Ca2SO4.2H2O). The tests studied in this experimental part were the compressive strength, flexural strength, thermogravimetry, mercury intrusion porosimetry and mass variations of the concrete. The results clearly show that the CEM I 42.5 is suitable for the formulation of concretes exposed to sulphate attack and their properties are better compared with the CEM II/A 42.5.

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硫酸盐侵蚀下普通硅酸盐水泥混凝土耐久性和力学性能的演变

硫酸盐环境中的混凝土经常发生重大变化，这往往会对其工程性能产生重大不利影响。然而，对于暴露在侵蚀性环境中的混凝土，水泥类型的选择是一个非常重要的因素。研究了两种水泥对掺入5%石膏（Ca2SO4·2H2O）侵蚀性溶液中的普通混凝土力学性能和微观结构性能的影响。本实验部分研究了混凝土的抗压强度、抗弯强度、热重、压汞孔隙率和质量变化。结果清楚地表明，CEM I 42.5适用于暴露于硫酸盐侵蚀的混凝土配方，并且与CEM II/A 42.5相比，它们的性能更好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Engineering Review ENGINEERING, MULTIDISCIPLINARY-

CiteScore

1.00

自引率

0.00%

发文量

期刊介绍： Engineering Review is an international journal designed to foster the exchange of ideas and transfer of knowledge between scientists and engineers involved in various engineering sciences that deal with investigations related to design, materials, technology, maintenance and manufacturing processes. It is not limited to the specific details of science and engineering but is instead devoted to a very wide range of subfields in the engineering sciences. It provides an appropriate resort for publishing the papers covering prior applications – based on the research topics comprising the entire engineering spectrum. Topics of particular interest thus include: mechanical engineering, naval architecture and marine engineering, fundamental engineering sciences, electrical engineering, computer sciences and civil engineering. Manuscripts addressing other issues may also be considered if they relate to engineering oriented subjects. The contributions, which may be analytical, numerical or experimental, should be of significance to the progress of mentioned topics. Papers that are merely illustrations of established principles or procedures generally will not be accepted. Occasionally, the magazine is ready to publish high-quality-selected papers from the conference after being renovated, expanded and written in accordance with the rules of the magazine. The high standard of excellence for any of published papers will be ensured by peer-review procedure. The journal takes into consideration only original scientific papers.