非饱和再生骨料混凝土中氯离子侵入的 FE2 数值研究

IF 10.9 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Cement and Concrete Research Pub Date : 2024-10-30 DOI:10.1016/j.cemconres.2024.107703

Arthur Fanara , Luc Courard , Frédéric Collin

{"title":"非饱和再生骨料混凝土中氯离子侵入的 FE2 数值研究","authors":"Arthur Fanara , Luc Courard , Frédéric Collin","doi":"10.1016/j.cemconres.2024.107703","DOIUrl":null,"url":null,"abstract":"<div><div>The analysis of the impact of Recycled Concrete Aggregates (RCA) on chloride ingress is of prime importance for the development of Recycled Aggregates Concrete. A coupled chemo-hydraulic multiscale model, using the Finite Element squared (FE<span><math><msup><mrow></mrow><mrow><mn>2</mn></mrow></msup></math></span>) method, has been developed, validated and calibrated. The constitutive equations using intrinsic parameters derived from laboratory experiments on concrete samples have been established. The findings indicate that the durability of Recycled Aggregates Concrete (RAC) could be comparable to that of Natural Aggregates Concrete (NAC) depending on the mixture quality and environmental conditions. The main difference in durability comes from the rate of diffusion with regards to the mortar paste adherent content.</div></div>","PeriodicalId":266,"journal":{"name":"Cement and Concrete Research","volume":"186 ","pages":"Article 107703"},"PeriodicalIF":10.9000,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Numerical FE2 study of chloride ingress in unsaturated recycled aggregates concrete\",\"authors\":\"Arthur Fanara , Luc Courard , Frédéric Collin\",\"doi\":\"10.1016/j.cemconres.2024.107703\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The analysis of the impact of Recycled Concrete Aggregates (RCA) on chloride ingress is of prime importance for the development of Recycled Aggregates Concrete. A coupled chemo-hydraulic multiscale model, using the Finite Element squared (FE<span><math><msup><mrow></mrow><mrow><mn>2</mn></mrow></msup></math></span>) method, has been developed, validated and calibrated. The constitutive equations using intrinsic parameters derived from laboratory experiments on concrete samples have been established. The findings indicate that the durability of Recycled Aggregates Concrete (RAC) could be comparable to that of Natural Aggregates Concrete (NAC) depending on the mixture quality and environmental conditions. The main difference in durability comes from the rate of diffusion with regards to the mortar paste adherent content.</div></div>\",\"PeriodicalId\":266,\"journal\":{\"name\":\"Cement and Concrete Research\",\"volume\":\"186 \",\"pages\":\"Article 107703\"},\"PeriodicalIF\":10.9000,\"publicationDate\":\"2024-10-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Cement and Concrete Research\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0008884624002849\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cement and Concrete Research","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0008884624002849","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

摘要

分析再生混凝土骨料（RCA）对氯化物侵入的影响对于再生骨料混凝土的开发至关重要。采用有限元平方法（FE2）开发、验证和校准了一个化学-水力多尺度耦合模型。利用从混凝土样品实验室实验中得出的内在参数建立了构成方程。研究结果表明，根据混合物的质量和环境条件，再生骨料混凝土（RAC）的耐久性可与天然骨料混凝土（NAC）相媲美。耐久性的主要差异来自于砂浆膏粘附物的扩散速度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Numerical FE2 study of chloride ingress in unsaturated recycled aggregates concrete

The analysis of the impact of Recycled Concrete Aggregates (RCA) on chloride ingress is of prime importance for the development of Recycled Aggregates Concrete. A coupled chemo-hydraulic multiscale model, using the Finite Element squared (FE

^{2}

) method, has been developed, validated and calibrated. The constitutive equations using intrinsic parameters derived from laboratory experiments on concrete samples have been established. The findings indicate that the durability of Recycled Aggregates Concrete (RAC) could be comparable to that of Natural Aggregates Concrete (NAC) depending on the mixture quality and environmental conditions. The main difference in durability comes from the rate of diffusion with regards to the mortar paste adherent content.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Cement and Concrete Research 工程技术-材料科学：综合

CiteScore

20.90

自引率

12.30%

发文量

318

审稿时长

53 days

期刊介绍： Cement and Concrete Research is dedicated to publishing top-notch research on the materials science and engineering of cement, cement composites, mortars, concrete, and related materials incorporating cement or other mineral binders. The journal prioritizes reporting significant findings in research on the properties and performance of cementitious materials. It also covers novel experimental techniques, the latest analytical and modeling methods, examination and diagnosis of actual cement and concrete structures, and the exploration of potential improvements in materials.