{"title":"Promising green composites: Bamboo based/epoxy resin composite pipes with high mechanical stability designed by cascade","authors":"Xiaolin Ru, Yangyang Xu, Yun Qian, Haili Chen, Yunyan Peng, Youming Yu","doi":"10.1016/j.conbuildmat.2024.138331","DOIUrl":null,"url":null,"abstract":"<div><p>Since bamboo possesses an extremely high weight-strength ratio, excellent flexibility, and a unique round structure, this fast-growing and abundant biomass has been thought of as a promising alternative to building materials, especially plastic pipes. However, the inherent limitations, including poor water resistance, transverse mechanical weaknesses, and low mildew resistance, hinder its application. Composite bamboo with resins could effectively improve the above problems, but resin modification methods that have been traditionally used fail to achieve strong interfacial bonding with the bamboo substrate, which could not meet the requirements for high performance in harsh conditions. This study treated round bamboo with limited delignification and acetylation. The limited delignification treatment promoted lateral impregnation of the epoxy resin into the round bamboo substrate and maximized retention of the performance advantages of round bamboo. The treatment also provided more reaction sites for acetylation. The acetylation treatment enhanced interfacial adhesion between the cured epoxy resin and the round bamboo substrate. Due to this tighter connection from both physical structure bonding, the as-prepared bamboo-based/epoxy resin composite pipes exhibited excellent mechanical performance, with a tensile strength of 3.89 MPa in the hoop direction, 74.69 MPa in the longitudinal direction, and a ring stiffness of 50.26 kPa. This study prepared a sustainable and high-strength candidate for plastic pipes through a low-carbon, energy-saving, and emission reduction method, which brought new perspective for achieving the goal of carbon neutrality.</p></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"449 ","pages":"Article 138331"},"PeriodicalIF":7.4000,"publicationDate":"2024-09-17","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/S0950061824034731","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
Since bamboo possesses an extremely high weight-strength ratio, excellent flexibility, and a unique round structure, this fast-growing and abundant biomass has been thought of as a promising alternative to building materials, especially plastic pipes. However, the inherent limitations, including poor water resistance, transverse mechanical weaknesses, and low mildew resistance, hinder its application. Composite bamboo with resins could effectively improve the above problems, but resin modification methods that have been traditionally used fail to achieve strong interfacial bonding with the bamboo substrate, which could not meet the requirements for high performance in harsh conditions. This study treated round bamboo with limited delignification and acetylation. The limited delignification treatment promoted lateral impregnation of the epoxy resin into the round bamboo substrate and maximized retention of the performance advantages of round bamboo. The treatment also provided more reaction sites for acetylation. The acetylation treatment enhanced interfacial adhesion between the cured epoxy resin and the round bamboo substrate. Due to this tighter connection from both physical structure bonding, the as-prepared bamboo-based/epoxy resin composite pipes exhibited excellent mechanical performance, with a tensile strength of 3.89 MPa in the hoop direction, 74.69 MPa in the longitudinal direction, and a ring stiffness of 50.26 kPa. This study prepared a sustainable and high-strength candidate for plastic pipes through a low-carbon, energy-saving, and emission reduction method, which brought new perspective for achieving the goal of carbon neutrality.
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.