Mechanical properties of hybrid fiber reinforced coral aggregate seawater concrete based on scanning electron microscopy (SEM)

IF 6.7 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Journal of building engineering Pub Date : 2025-06-16 DOI:10.1016/j.jobe.2025.113194

Dai Junyan , Yin Shiping

{"title":"Mechanical properties of hybrid fiber reinforced coral aggregate seawater concrete based on scanning electron microscopy (SEM)","authors":"Dai Junyan , Yin Shiping","doi":"10.1016/j.jobe.2025.113194","DOIUrl":null,"url":null,"abstract":"<div><div>Based on the cubic compressive strength and flexural strength tests of 18 sets of hybrid fiber reinforced coral aggregate seawater concrete (HFRCASC) and 1 set of C40 grade benchmark CASC, the effects of different mixing methods of polypropylene fibers (PPF), basalt fibers (BF), and glass fibers (GF), as well as the mixing amounts, on the mechanical properties of HFRCASC were investigated. The results show that the cubic compressive strength and flexural strength of HFRCASC are higher than that of C40 benchmark CASC, and the maximum improvement of cubic compressive strength reaches 28.7 % and flexural strength increases by 26 % when the mixing amount of PPF and BF is 2 kg/m<sup>3</sup>. PPF is a significant factor affecting the compressive strength of HFRCASC, and with the increase of PPF dosage flexural strength showed a trend of increasing first and then decreasing, GF is not obvious to improve the compressive strength. Diversified regression analysis of the test results using SPSS resulted in a predictive model for the compressive strength of HFRCASC cubes with high model accuracy.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"111 ","pages":"Article 113194"},"PeriodicalIF":6.7000,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of building engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352710225014317","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

Based on the cubic compressive strength and flexural strength tests of 18 sets of hybrid fiber reinforced coral aggregate seawater concrete (HFRCASC) and 1 set of C40 grade benchmark CASC, the effects of different mixing methods of polypropylene fibers (PPF), basalt fibers (BF), and glass fibers (GF), as well as the mixing amounts, on the mechanical properties of HFRCASC were investigated. The results show that the cubic compressive strength and flexural strength of HFRCASC are higher than that of C40 benchmark CASC, and the maximum improvement of cubic compressive strength reaches 28.7 % and flexural strength increases by 26 % when the mixing amount of PPF and BF is 2 kg/m³. PPF is a significant factor affecting the compressive strength of HFRCASC, and with the increase of PPF dosage flexural strength showed a trend of increasing first and then decreasing, GF is not obvious to improve the compressive strength. Diversified regression analysis of the test results using SPSS resulted in a predictive model for the compressive strength of HFRCASC cubes with high model accuracy.

查看原文本刊更多论文

基于扫描电镜的混杂纤维增强珊瑚骨料海水混凝土力学性能研究

通过18组混杂纤维增强珊瑚骨料海水混凝土（HFRCASC）和1组C40级基准海水混凝土的立方抗压强度和抗弯强度试验，研究了聚丙烯纤维（PPF）、玄武岩纤维（BF）和玻璃纤维（GF）的不同掺量及掺量对HFRCASC力学性能的影响。结果表明：与C40基准CASC相比，HFRCASC的立方抗压强度和抗弯强度均有所提高，当PPF和BF的掺量为2 kg/m3时，其立方抗压强度最大提高28.7%，抗弯强度最大提高26%；PPF是影响HFRCASC抗压强度的重要因素，随着PPF用量的增加，抗弯强度呈现先增大后减小的趋势，GF对抗压强度的提高不明显。利用SPSS软件对试验结果进行多元回归分析，建立了HFRCASC立方体抗压强度预测模型，模型精度较高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of building engineering Engineering-Civil and Structural Engineering

CiteScore

10.00

自引率

12.50%

发文量

1901

审稿时长

35 days

期刊介绍： The Journal of Building Engineering is an interdisciplinary journal that covers all aspects of science and technology concerned with the whole life cycle of the built environment; from the design phase through to construction, operation, performance, maintenance and its deterioration.