Synergistic modification of bamboo aggregates by sodium alginate-CaCl2: optimization and performance evaluation of sustainable lightweight concrete

IF 8.2 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Developments in the Built Environment Pub Date : 2025-04-01 DOI:10.1016/j.dibe.2025.100670

Xiang Chen , Hongzhou Zhu , Xinqiang Zhang , Dan Yang , Zhenzhen Wang , Jian Zhang , Jian Zhang

{"title":"Synergistic modification of bamboo aggregates by sodium alginate-CaCl2: optimization and performance evaluation of sustainable lightweight concrete","authors":"Xiang Chen , Hongzhou Zhu , Xinqiang Zhang , Dan Yang , Zhenzhen Wang , Jian Zhang , Jian Zhang","doi":"10.1016/j.dibe.2025.100670","DOIUrl":null,"url":null,"abstract":"<div><div>In the context of global climate change, the demand for green building materials has grown increasingly urgent. This study has made significant advancements in sustainable construction materials by developing all-bamboo aggregate concrete (BAC) enhanced with a sodium alginate-CaCl<sub>2</sub> synergy through an environmentally friendly process. Using response surface methodology optimization, the 28-day compressive strength was increased to 8.10 MPa. Scanning electron microscope (SEM) analysis indicates that the alginate gel forms a cross-linked network within bamboo micro-cracks, substantially improving interfacial bonding. A novel bamboo aggregate mass index (BAMI) has been introduced to quantify particle shape, allowing precise control over aggregate quality, thus offering a new solution for lightweight pavement materials. While fly ash reduces short-term strength, its low alkalinity and secondary hydration effects positively influence long-term durability. This research provides a scientific basis for utilizing BAC in pedestrian pavements and advancing sustainable construction materials.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"22 ","pages":"Article 100670"},"PeriodicalIF":8.2000,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Developments in the Built Environment","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2666165925000705","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

In the context of global climate change, the demand for green building materials has grown increasingly urgent. This study has made significant advancements in sustainable construction materials by developing all-bamboo aggregate concrete (BAC) enhanced with a sodium alginate-CaCl₂ synergy through an environmentally friendly process. Using response surface methodology optimization, the 28-day compressive strength was increased to 8.10 MPa. Scanning electron microscope (SEM) analysis indicates that the alginate gel forms a cross-linked network within bamboo micro-cracks, substantially improving interfacial bonding. A novel bamboo aggregate mass index (BAMI) has been introduced to quantify particle shape, allowing precise control over aggregate quality, thus offering a new solution for lightweight pavement materials. While fly ash reduces short-term strength, its low alkalinity and secondary hydration effects positively influence long-term durability. This research provides a scientific basis for utilizing BAC in pedestrian pavements and advancing sustainable construction materials.

查看原文本刊更多论文

海藻酸钠- cacl2协同改性竹骨料：可持续轻量化混凝土的优化与性能评价

在全球气候变化的背景下，对绿色建筑材料的需求日益迫切。本研究通过一种环境友好的工艺，开发了海藻酸钠- cacl2协同增强型全竹骨料混凝土（BAC），在可持续建筑材料方面取得了重大进展。采用响应面法优化，将28天抗压强度提高至8.10 MPa。扫描电镜（SEM）分析表明，藻酸盐凝胶在竹微裂纹内形成交联网络，大大提高了界面结合。引入了一种新的竹骨料质量指数（BAMI）来量化颗粒形状，从而可以精确控制骨料质量，从而为轻质路面材料提供了新的解决方案。粉煤灰降低了短期强度，但其低碱度和二次水化效应对长期耐久性有积极影响。本研究为BAC在人行路面的应用和可持续建筑材料的推广提供了科学依据。

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

Developments in the Built Environment Multiple-

CiteScore

7.40

自引率

1.20%

发文量

审稿时长

22 days

期刊介绍： Developments in the Built Environment (DIBE) is a recently established peer-reviewed gold open access journal, ensuring that all accepted articles are permanently and freely accessible. Focused on civil engineering and the built environment, DIBE publishes original papers and short communications. Encompassing topics such as construction materials and building sustainability, the journal adopts a holistic approach with the aim of benefiting the community.