Interface adhesion enhancement and multi-scale evaluation of recycled concrete aggregate(RCA) and asphalt

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

Construction and Building Materials Pub Date : 2024-11-29 DOI:10.1016/j.conbuildmat.2024.139271

Yueqin Hou , Xuejun Zhang , Jie Liu , Chengchen He , Xiaoping Ji

{"title":"Interface adhesion enhancement and multi-scale evaluation of recycled concrete aggregate(RCA) and asphalt","authors":"Yueqin Hou , Xuejun Zhang , Jie Liu , Chengchen He , Xiaoping Ji","doi":"10.1016/j.conbuildmat.2024.139271","DOIUrl":null,"url":null,"abstract":"<div><div>Interfacial enhancement is an important way to ensure the road performance of RCA-containing asphalt mixtures. In this paper, RCA was enhanced by four methods, namely acid solution immersion(ASI), volcanic ash slurry immersion(VASI), Nano-SiO<sub>2</sub>/cement material composite modification(NM) and lime water immersion(LWI), and the enhancement effect was evaluated using four indicators, namely, three-dimensional surface roughness on the RCA surface, surface energy parameter, adhesion work between RCA and asphalt, and predicted macroscopic bond strength between RCA and asphalt. The results showed that both ASI and LWI resulted in an increase in the 3D surface roughness of RCA, which was reduced after VASI and NM; the surface energy parameters of RCA and the adhesion work with asphalt were effectively increased after LWI, NM, and VASI. The predicted macroscopic adhesion strength of RCA after hydrochloric acid immersion(HAI) and LWI was increased by 1.55 %, 17.81 % and 17.81 %, respectively. The predicted macroscopic adhesion strength of RCA to asphalt decreased by 0.04 %, 10.85 %, and 18.67 % after phosphoric acid solution immersion(PAI), VASI, and NM, respectively; considering the four types of reinforcement, LWI and ASI were the more economical and effective reinforcement methods.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"457 ","pages":"Article 139271"},"PeriodicalIF":7.4000,"publicationDate":"2024-11-29","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/S0950061824044131","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

Interfacial enhancement is an important way to ensure the road performance of RCA-containing asphalt mixtures. In this paper, RCA was enhanced by four methods, namely acid solution immersion(ASI), volcanic ash slurry immersion(VASI), Nano-SiO₂/cement material composite modification(NM) and lime water immersion(LWI), and the enhancement effect was evaluated using four indicators, namely, three-dimensional surface roughness on the RCA surface, surface energy parameter, adhesion work between RCA and asphalt, and predicted macroscopic bond strength between RCA and asphalt. The results showed that both ASI and LWI resulted in an increase in the 3D surface roughness of RCA, which was reduced after VASI and NM; the surface energy parameters of RCA and the adhesion work with asphalt were effectively increased after LWI, NM, and VASI. The predicted macroscopic adhesion strength of RCA after hydrochloric acid immersion(HAI) and LWI was increased by 1.55 %, 17.81 % and 17.81 %, respectively. The predicted macroscopic adhesion strength of RCA to asphalt decreased by 0.04 %, 10.85 %, and 18.67 % after phosphoric acid solution immersion(PAI), VASI, and NM, respectively; considering the four types of reinforcement, LWI and ASI were the more economical and effective reinforcement methods.

查看原文本刊更多论文

再生混凝土骨料与沥青界面粘接增强及多尺度评价

界面增强是保证含rca沥青混合料路用性能的重要途径。本文采用酸溶液浸泡（ASI）、火山灰浆浸泡（VASI）、纳米sio2 /水泥材料复合改性（NM）和石灰水浸泡（LWI） 4种方法对RCA进行增强，并利用RCA表面三维表面粗糙度、表面能参数、RCA与沥青的粘附功4个指标对增强效果进行评价，预测RCA与沥青的宏观粘结强度。结果表明，ASI和LWI均能提高RCA的三维表面粗糙度，而VASI和NM均能降低RCA的三维表面粗糙度；经过LWI、NM和VASI后，RCA的表面能参数和与沥青的附着力都得到了有效提高。预测盐酸浸泡（HAI）和LWI后RCA的宏观粘附强度分别提高1.55 %、17.81 %和17.81 %。经磷酸溶液浸泡（PAI）、VASI和NM处理后，RCA与沥青的宏观粘附强度分别降低0.04 %、10.85 %和18.67 %；综合四种加固方式，LWI和ASI加固方式更为经济有效。

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

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.