Flexural behavior and durability of reinforced concrete beams with seawater, sulfate-resistant cement, and glass fiber-reinforced polymer reinforcement

IF 5.6 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures Pub Date : 2025-03-28 DOI:10.1016/j.engstruct.2025.120204

Abdelrahman Abushanab , Usama Ebead , Magdy Genedy , Nehal M. Ayash , Sami Akil Fawzy

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引用次数: 0

Abstract

Seawater has recently been proposed for concrete manufacturing as a sustainable alternative to fresh water. However, seawater degrades the concrete properties at later ages. Accordingly, this study experimentally and analytically investigated the flexural behavior and durability of 9 concrete beams reinforced with glass fiber-reinforced polymer (GFRP) reinforcement and made with 3 seawater replacement ratios (0 %, 50 %, and 100 %), 2 types of cement (ordinary Portlandite and sulfate-resistant cement), and 2 types of curing water (fresh water and seawater). The beams were prepared with dimensions of 200 × 500 × 2200 mm and tested after exposure to seawater for 6 months. The results demonstrated that incorporating seawater and sulfate-resistant cement simultaneously improved the 28-day mechanical properties of concrete by about 16 % compared to those made entirely with fresh water. Likewise, beams made with 100 % seawater and sulfate-resistant cement recorded an improvement of 23 % in the load-carrying capacity and 80 % in the energy absorption compared to beams with fresh water. In addition, the beams made with seawater and sulfate-resistant cement showed no difference in the failure mode and flexural properties after conditioning in seawater for 180 days as compared to the reference beam. Analytically, ACI 440.11–22 achieved the best moment capacity prediction of the tested beams with an average, standard deviation, and coefficient of variance of experimental-to-predicted moment ratios of 1.26, 0.11, and 8.75 %, respectively.

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来源期刊

Engineering Structures 工程技术-工程：土木

CiteScore

10.20

自引率

14.50%

发文量

1385

审稿时长

67 days

期刊介绍： Engineering Structures provides a forum for a broad blend of scientific and technical papers to reflect the evolving needs of the structural engineering and structural mechanics communities. Particularly welcome are contributions dealing with applications of structural engineering and mechanics principles in all areas of technology. The journal aspires to a broad and integrated coverage of the effects of dynamic loadings and of the modelling techniques whereby the structural response to these loadings may be computed. The scope of Engineering Structures encompasses, but is not restricted to, the following areas: infrastructure engineering; earthquake engineering; structure-fluid-soil interaction; wind engineering; fire engineering; blast engineering; structural reliability/stability; life assessment/integrity; structural health monitoring; multi-hazard engineering; structural dynamics; optimization; expert systems; experimental modelling; performance-based design; multiscale analysis; value engineering. Topics of interest include: tall buildings; innovative structures; environmentally responsive structures; bridges; stadiums; commercial and public buildings; transmission towers; television and telecommunication masts; foldable structures; cooling towers; plates and shells; suspension structures; protective structures; smart structures; nuclear reactors; dams; pressure vessels; pipelines; tunnels. Engineering Structures also publishes review articles, short communications and discussions, book reviews, and a diary on international events related to any aspect of structural engineering.