掺入纤维和阿尔及利亚天然火山灰的高性能混凝土在氯化物侵蚀中的力学性能和耐久性

IF 1.3 Q3 ENGINEERING, MULTIDISCIPLINARY
Lyes Chalah, A. Talah, Y. Ghernouti
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引用次数: 1

摘要

本研究旨在评估氯化钠侵蚀对基于纤维和天然火山灰的高性能混凝土(HPC)力学性能和耐久性的影响。试样的抗化学侵蚀性能由试样的单位重量、抗压强度、抗裂抗拉强度、氯离子渗透性、表观气体渗透性以及经过28天、90天、180天和365天的目视检查来确定。总共评估了三种类型的混凝土:参考混凝土(RC),高性能纤维增强混凝土(hfrc),储存在自来水和侵蚀水(即10% NaCl溶液)中。试验结果表明,纤维的存在对高性能混凝土的渗透性有不利影响。与RC相比,HPC和HPFRC保持稳定,不受NaCl溶液的影响。天然火山灰通过占据空隙(即填料效应)和在水泥基质中产生更致密的产物(即火山灰反应)来减弱纤维的副作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Mechanical and Durability Properties of High-Performance Concrete Incorporating Fibers and Algerian Natural Pozzolans in Chloride Attack
This study aims to assess the effect of sodium chloride attack on the mechanical and durability properties of high-performance concrete (HPC) based on fibers and natural pozzolans. The resistance of specimens against chemical attack is determined by the unit weight, compressive strength, splitting-tensile strength, chloride ion permeability, apparent gas permeability, and visual inspection after 28, 90, 180, and 365 days of testing. A total of three types of concrete are assessed: reference concrete (RC), HPC, and high-performance fiber-reinforced concrete (HPFRC) stored in tap water and aggressive water (i.e., a 10% NaCl solution). The test results demonstrate that the presence of fibers negatively affects the permeability of HPC. However, HPC and HPFRC remain stable and are not influenced by the NaCl solution compared to RC. The natural pozzolans attenuate the side effect of fibers by occupying voids (i.e., the filler effect) and generating denser products (i.e., the pozzolanic reaction) in the cement matrix.
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来源期刊
CiteScore
2.80
自引率
0.00%
发文量
18
审稿时长
12 weeks
期刊介绍: The IJETI journal focus on the field of engineering and technology Innovation. And it publishes original papers including but not limited to the following fields: Automation Engineering Civil Engineering Control Engineering Electric Engineering Electronic Engineering Green Technology Information Engineering Mechanical Engineering Material Engineering Mechatronics and Robotics Engineering Nanotechnology Optic Engineering Sport Science and Technology Innovation Management Other Engineering and Technology Related Topics.
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