Study on the long-term mechanical property evolution law and microscopic mechanism of bamboo fiber reinforced sea sand reactive powder concrete

IF 7.4 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Construction and Building Materials Pub Date : 2025-04-02 DOI:10.1016/j.conbuildmat.2025.141100

Lincai Ge , Haitao Li , Zixian Feng , Mahdi Hosseini

{"title":"Study on the long-term mechanical property evolution law and microscopic mechanism of bamboo fiber reinforced sea sand reactive powder concrete","authors":"Lincai Ge , Haitao Li , Zixian Feng , Mahdi Hosseini","doi":"10.1016/j.conbuildmat.2025.141100","DOIUrl":null,"url":null,"abstract":"<div><div>In order to reveal the evolution of the long-term mechanical properties of bamboo fiber (BF) reinforced sea sand reactive powder concrete (SRPC), the micro morphology, chemical composition and pore structure of BF-SRPC were investigated by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR) and computed tomography (CT). The results showed that the incorporation of BF effectively optimized the pore distribution and reduced the number and volume of pores. When the optimum content was 0.75 %, the compressive strength of BF-SRPC increased by 4.17 %, 11.61 %, 12.50 % and 15.23 %, and the splitting tensile strength increased by 2.41 %, 30.68 %, 25.98 %, and 26.81 % at the ages of 7, 28, 90, and 180 days, compared with that of the plain SRPC, respectively. At 180 days, the interfacial transition zone between BF and SRPC was tightly bonded, and the mineralization damage of BF was significantly reduced. The microfibril structure was intact, and the stretching vibration peak of cellulose C-O-C and lignin C<img>C had no significant change compared with 90 days.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"474 ","pages":"Article 141100"},"PeriodicalIF":7.4000,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Construction and Building Materials","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0950061825012486","RegionNum":1,"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

In order to reveal the evolution of the long-term mechanical properties of bamboo fiber (BF) reinforced sea sand reactive powder concrete (SRPC), the micro morphology, chemical composition and pore structure of BF-SRPC were investigated by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR) and computed tomography (CT). The results showed that the incorporation of BF effectively optimized the pore distribution and reduced the number and volume of pores. When the optimum content was 0.75 %, the compressive strength of BF-SRPC increased by 4.17 %, 11.61 %, 12.50 % and 15.23 %, and the splitting tensile strength increased by 2.41 %, 30.68 %, 25.98 %, and 26.81 % at the ages of 7, 28, 90, and 180 days, compared with that of the plain SRPC, respectively. At 180 days, the interfacial transition zone between BF and SRPC was tightly bonded, and the mineralization damage of BF was significantly reduced. The microfibril structure was intact, and the stretching vibration peak of cellulose C-O-C and lignin CC had no significant change compared with 90 days.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Construction and Building Materials 工程技术-材料科学：综合

CiteScore

13.80

自引率

21.60%

发文量

3632

审稿时长

82 days

期刊介绍： Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged. Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.