Evaluation of connectors' influence on the interface behaviour between concrete layers

IF 3.4 3区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Materials and Structures Pub Date : 2025-01-09 DOI:10.1617/s11527-024-02553-1

Juozas Masėnas, Juozas Valivonis

{"title":"Evaluation of connectors' influence on the interface behaviour between concrete layers","authors":"Juozas Masėnas, Juozas Valivonis","doi":"10.1617/s11527-024-02553-1","DOIUrl":null,"url":null,"abstract":"<div><p>The behavior of concrete interfaces cast at different times is influenced by many variables, including material characteristics, interface surface preparation, interface geometry and many more. The performance of such interfaces is not yet fully understood and is particularly challenging to predict. This paper presents and discusses the results of 17 experimental push-off tests, which varied in interface types and connector arrangements. Three types of interface connector arrangements were tested and compared: one perpendicular to the interface and two lattice girder configurations. Interfaces with lattice girder connectors exhibited greater adhesion resistance. Among these, one specific lattice girder arrangement demonstrated the highest resistance to shear following adhesion failure. A second type of lattice girder arrangement was responsible for the lowest interface crack width. When the perpendicular interface connector arrangement was used, the widest interface crack was observed. The experimental specimens also featured different interface surface types: smooth and shear key interfaces. The shear key interface achieved the highest overall shear capacity. Additionally, a novel theoretical model was employed to predict interface behavior up to considerable slippage. The impact of differential shrinkage on the adhesion resistance of the interface was demonstrated using theoretical shrinkage and interface behavior results.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"58 1","pages":""},"PeriodicalIF":3.4000,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1617/s11527-024-02553-1.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials and Structures","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1617/s11527-024-02553-1","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

The behavior of concrete interfaces cast at different times is influenced by many variables, including material characteristics, interface surface preparation, interface geometry and many more. The performance of such interfaces is not yet fully understood and is particularly challenging to predict. This paper presents and discusses the results of 17 experimental push-off tests, which varied in interface types and connector arrangements. Three types of interface connector arrangements were tested and compared: one perpendicular to the interface and two lattice girder configurations. Interfaces with lattice girder connectors exhibited greater adhesion resistance. Among these, one specific lattice girder arrangement demonstrated the highest resistance to shear following adhesion failure. A second type of lattice girder arrangement was responsible for the lowest interface crack width. When the perpendicular interface connector arrangement was used, the widest interface crack was observed. The experimental specimens also featured different interface surface types: smooth and shear key interfaces. The shear key interface achieved the highest overall shear capacity. Additionally, a novel theoretical model was employed to predict interface behavior up to considerable slippage. The impact of differential shrinkage on the adhesion resistance of the interface was demonstrated using theoretical shrinkage and interface behavior results.

查看原文本刊更多论文

接头对混凝土层间界面性能影响的评价

在不同时间浇筑的混凝土界面的行为受到许多变量的影响，包括材料特性、界面表面制备、界面几何形状等。这些接口的性能还没有被完全理解，而且预测起来特别具有挑战性。本文介绍并讨论了17个不同接口类型和接头布置的推离试验结果。测试和比较了三种类型的界面连接件布置：一种垂直于界面和两种晶格梁布置。格子梁连接件的界面表现出更大的粘附阻力。其中，一种特定的点阵梁布置在粘着破坏后表现出最高的抗剪切能力。第二种格梁布置方式的界面裂缝宽度最小。采用垂直界面接头布置时，界面裂缝最宽。实验试样的界面表面类型也不同：光滑键界面和剪切键界面。剪切关键界面整体抗剪能力最高。此外，采用了一种新的理论模型来预测界面行为直至相当大的滑移。利用理论收缩率和界面行为结果验证了差异收缩率对界面粘附阻力的影响。

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

Materials and Structures 工程技术-材料科学：综合

CiteScore

6.40

自引率

7.90%

发文量

222

审稿时长

5.9 months

期刊介绍： Materials and Structures, the flagship publication of the International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM), provides a unique international and interdisciplinary forum for new research findings on the performance of construction materials. A leader in cutting-edge research, the journal is dedicated to the publication of high quality papers examining the fundamental properties of building materials, their characterization and processing techniques, modeling, standardization of test methods, and the application of research results in building and civil engineering. Materials and Structures also publishes comprehensive reports prepared by the RILEM’s technical committees.