Trends in the Addition of PET and Natural Fibers to the Concrete- Steel Reinforcement System

Onofre-Bustamante E
{"title":"Trends in the Addition of PET and Natural Fibers to the Concrete- Steel Reinforcement System","authors":"Onofre-Bustamante E","doi":"10.19080/cerj.2021.12.555841","DOIUrl":null,"url":null,"abstract":"Due to the nature of the aggregates used in the manufacture of concrete and therefore of the concrete- steel reinforcement system, as well as its growing demand, a negative environmental impact has been caused on the planet. Therefore, at present green alternatives are sought that can reduce the negative impact of the construction industry particularly concrete, some of these alternatives with greater positive impact are: the addition of natural fibers of vegetable origin and the addition of polymers such as recycled Polyethylene Terephthalate (PET), because both materials abound on the planet, they are easy to obtain, and positively impact the environment by reusing them, reducing the use of raw material and energy invested in the elaboration of concrete, which in turn cause the increase in Greenhouse Gases (GHG). Therefore, from this work of review of the state of the art and published trends involving the use of PET and natural fibers in concrete, the effect that the addition of these fibers has on the properties of the concrete-reinforcing steel system, and its impact on the construction industry, was determined. The effect on mechanical properties was mainly reviewed, however, recent studies show that electrochemical properties such as the susceptibility to corrosion of the reinforcing steel embedded in the concrete are also affected, because the presence of oxides on the reinforcing steel causes cracking, weakening the structures, causing a sudden failure of them. However, it is known that this corrosion process mainly affects structures exposed to saline environments such as bridge piles immersed in the sea. Therefore, the study of the concrete-reinforcing steel system and its modification through the addition of natural fibers or polymers partially replacing natural aggregates such as gravel and sand remains of the utmost importance, in order to reduce on the one hand, the environmental impact caused by the exploitation of the natural mantles from which the aggregates are obtained and on the other hand increase the life time of the concrete-reinforcing steel system. This approach is promising especially if one takes into account the results in the literature, which positively point to the addition of PET and natural fibers, since it has been determined that they increase some mechanical and electrochemical properties depending on the form and quantity in which it is incorporated into the concrete mixture.","PeriodicalId":30320,"journal":{"name":"Constructii Journal of Civil Engineering Research","volume":"1 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2021-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Constructii Journal of Civil Engineering Research","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.19080/cerj.2021.12.555841","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

Due to the nature of the aggregates used in the manufacture of concrete and therefore of the concrete- steel reinforcement system, as well as its growing demand, a negative environmental impact has been caused on the planet. Therefore, at present green alternatives are sought that can reduce the negative impact of the construction industry particularly concrete, some of these alternatives with greater positive impact are: the addition of natural fibers of vegetable origin and the addition of polymers such as recycled Polyethylene Terephthalate (PET), because both materials abound on the planet, they are easy to obtain, and positively impact the environment by reusing them, reducing the use of raw material and energy invested in the elaboration of concrete, which in turn cause the increase in Greenhouse Gases (GHG). Therefore, from this work of review of the state of the art and published trends involving the use of PET and natural fibers in concrete, the effect that the addition of these fibers has on the properties of the concrete-reinforcing steel system, and its impact on the construction industry, was determined. The effect on mechanical properties was mainly reviewed, however, recent studies show that electrochemical properties such as the susceptibility to corrosion of the reinforcing steel embedded in the concrete are also affected, because the presence of oxides on the reinforcing steel causes cracking, weakening the structures, causing a sudden failure of them. However, it is known that this corrosion process mainly affects structures exposed to saline environments such as bridge piles immersed in the sea. Therefore, the study of the concrete-reinforcing steel system and its modification through the addition of natural fibers or polymers partially replacing natural aggregates such as gravel and sand remains of the utmost importance, in order to reduce on the one hand, the environmental impact caused by the exploitation of the natural mantles from which the aggregates are obtained and on the other hand increase the life time of the concrete-reinforcing steel system. This approach is promising especially if one takes into account the results in the literature, which positively point to the addition of PET and natural fibers, since it has been determined that they increase some mechanical and electrochemical properties depending on the form and quantity in which it is incorporated into the concrete mixture.
在混凝土-钢筋体系中添加聚酯和天然纤维的趋势
由于用于制造混凝土和混凝土-钢筋系统的骨料的性质,以及其不断增长的需求,对地球造成了负面的环境影响。因此,目前正在寻求绿色替代品,以减少建筑业特别是混凝土的负面影响,其中一些具有较大积极影响的替代品包括:添加天然植物纤维和添加聚合物,如回收的聚对苯二甲酸乙二醇酯(PET),因为这两种材料在地球上大量存在,它们很容易获得,并且通过重复使用它们对环境产生积极影响,减少了原材料的使用和投资于混凝土的能源,这反过来又导致温室气体(GHG)的增加。因此,通过对混凝土中使用PET和天然纤维的最新技术和已发表趋势的回顾,确定了这些纤维的添加对混凝土-钢筋系统性能的影响及其对建筑行业的影响。对力学性能的影响主要进行了回顾,然而,最近的研究表明,电化学性能,如对混凝土中嵌入的钢筋的腐蚀敏感性也会受到影响,因为在钢筋上存在氧化物会导致开裂,削弱结构,导致它们突然失效。然而,众所周知,这种腐蚀过程主要影响暴露在盐水环境中的结构,如浸在海中的桥桩。因此,研究混凝土-钢筋体系,并通过添加天然纤维或聚合物来部分替代砾石和沙子等天然骨料对其进行改性,一方面可以减少开采天然地膜对环境造成的影响,另一方面可以延长混凝土-钢筋体系的使用寿命,这一点至关重要。这种方法是有希望的,特别是如果考虑到文献中的结果,这些结果积极地指出了PET和天然纤维的添加,因为已经确定它们增加了一些机械和电化学性能,这取决于它们加入混凝土混合物的形式和数量。
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
自引率
0.00%
发文量
4
审稿时长
16 weeks
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信