土工聚合物混凝土与巴扎尔特/玻璃纤维在高温下的粘结性能

IF 5.6 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures Pub Date : 2024-11-26 DOI:10.1016/j.engstruct.2024.119368

Muhammed Himmet Sami Özdemir , Barış Bayrak , Abdulkadir Cüneyt Aydın

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引用次数: 0

摘要

本手稿旨在通过拉拔试验评估土工聚合物混凝土的粘结性能，其中分析了纤维类型（玄武岩和玻璃纤维）、钢筋直径（8 毫米、16 毫米和 24 毫米）、钢筋位置和高温（20 °C、200 °C、400 °C、600 °C 和 800 °C）的影响因素。试验结果表明，钢筋直径是影响粘结强度的关键因素之一。虽然增加钢筋直径通常会降低粘接强度，但在某些样品中，钢筋直径的增加会提高粘接强度。另一方面，高温情况下的实验结果呈现出很大的分散性，并且可以观察到粘结强度与高温之间的高度关系。据观察，暴露在 200 °C 温度下的样品的粘接强度会增加，而暴露在 600 °C 和 800 °C 温度下的样品的粘接强度会显著降低。因此，可以得出结论：钢筋的位置和纤维类型可能对粘结的特性有重要影响。

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Bond performance of geopolymer concrete with bazalt/glass fiber under elevated temperature

This manuscript aims to assess the bond performance of geopolymer concrete was elevated using pullout tests, in which the influences of fiber type (basalt and glass), bar diameter (8 mm and 16 mm and 24 mm), the position of steel rebar and high temperature (20 °C, 200 °C, 400 °C, 600 °C and 800 °C) were analyzed. Results from these tests show that rebar diameter is one of the key factor affecting the bond strength. Although increasing the bar diameter generally reduces the bond strength, in some samples the increase in the bar diameter increases the bond strength. On the other hand, experimental results in the case of high temperature present a great dispersion and high relation is observed between bond strength and high temperature. It was observed the bond strength of samples exposed to temperature of 200 °C increased, whereas bond strength of samples especially exposed to a temperature of 600 °C and 800 °C significant decreased. Therefore, it is possible to conclude that the location of rebar may have an important influence on the characterization of the bond as well as fiber type.

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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.