不同细骨料级配3DPC层间粘结剪切性能及本构模型

IF 8 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Construction and Building Materials Pub Date : 2025-06-02 DOI:10.1016/j.conbuildmat.2025.142024

Qiang Pei , Yingzhu Zhong , Shuai Wang , Luxi Zhang , Yuhao Lai

{"title":"不同细骨料级配3DPC层间粘结剪切性能及本构模型","authors":"Qiang Pei , Yingzhu Zhong , Shuai Wang , Luxi Zhang , Yuhao Lai","doi":"10.1016/j.conbuildmat.2025.142024","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigates the effects of fine aggregate gradation on interlayer shear properties and constitutive relationships in 3D printed concrete (3DPC). Double shear tests and scanning electron microscopy (SEM) analysis were conducted on specimens with four particle sizes for single-graded and four Fuller gradation curve exponents for continuous-graded, analyzing the effects of different gradations on shear strength and stress-strain curves of interlayer. Results show that increasing coarse aggregate proportion enhances interlayer shear strength from 6.32 MPa to 7.76 MPa. SEM reveals optimal microstructural density with strong aggregate-matrix bonding. Experimental stress-strain data were fitted using Gauss Amp and ExpGrowDec functions to establish elastoplastic constitutive models for single and continuous gradations, respectively. The derived models demonstrate high consistency with experimental curves, providing a foundation for theoretical and numerical simulations of 3DPC interlayer shear mechanics. Findings highlight gradation optimization as a critical factor in improving interfacial mechanical performance through macro-microstructural synergy. This study provides an in-depth analysis of the interlayer shear behavior of 3DPC materials to provide a flexible framework for future material design.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"486 ","pages":"Article 142024"},"PeriodicalIF":8.0000,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Interlayer bonding shear performance and constitutive model of 3DPC with different fine aggregate gradations\",\"authors\":\"Qiang Pei , Yingzhu Zhong , Shuai Wang , Luxi Zhang , Yuhao Lai\",\"doi\":\"10.1016/j.conbuildmat.2025.142024\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study investigates the effects of fine aggregate gradation on interlayer shear properties and constitutive relationships in 3D printed concrete (3DPC). Double shear tests and scanning electron microscopy (SEM) analysis were conducted on specimens with four particle sizes for single-graded and four Fuller gradation curve exponents for continuous-graded, analyzing the effects of different gradations on shear strength and stress-strain curves of interlayer. Results show that increasing coarse aggregate proportion enhances interlayer shear strength from 6.32 MPa to 7.76 MPa. SEM reveals optimal microstructural density with strong aggregate-matrix bonding. Experimental stress-strain data were fitted using Gauss Amp and ExpGrowDec functions to establish elastoplastic constitutive models for single and continuous gradations, respectively. The derived models demonstrate high consistency with experimental curves, providing a foundation for theoretical and numerical simulations of 3DPC interlayer shear mechanics. Findings highlight gradation optimization as a critical factor in improving interfacial mechanical performance through macro-microstructural synergy. This study provides an in-depth analysis of the interlayer shear behavior of 3DPC materials to provide a flexible framework for future material design.</div></div>\",\"PeriodicalId\":288,\"journal\":{\"name\":\"Construction and Building Materials\",\"volume\":\"486 \",\"pages\":\"Article 142024\"},\"PeriodicalIF\":8.0000,\"publicationDate\":\"2025-06-02\",\"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/S0950061825021750\",\"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":"Construction and Building Materials","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0950061825021750","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

本研究探讨了细骨料级配对3D打印混凝土层间剪切性能和本构关系的影响。对单级配的4种粒径和连续级配的4种Fuller级配曲线指数试样进行了双剪试验和扫描电镜分析，分析了不同级配对层间抗剪强度和应力-应变曲线的影响。结果表明：随着粗集料掺量的增加，层间抗剪强度由6.32 MPa提高到7.76 MPa；扫描电镜显示，最佳的微观结构密度具有较强的骨料-基体结合。采用Gauss Amp和ExpGrowDec函数拟合实验应力应变数据，分别建立了单级配和连续级配弹塑性本构模型。导出的模型与实验曲线具有较高的一致性，为三维pc层间剪切力学的理论和数值模拟奠定了基础。研究结果表明，级配优化是通过宏观微观结构协同作用改善界面力学性能的关键因素。本研究对3DPC材料的层间剪切行为进行了深入分析，为未来的材料设计提供了一个灵活的框架。

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

Interlayer bonding shear performance and constitutive model of 3DPC with different fine aggregate gradations

This study investigates the effects of fine aggregate gradation on interlayer shear properties and constitutive relationships in 3D printed concrete (3DPC). Double shear tests and scanning electron microscopy (SEM) analysis were conducted on specimens with four particle sizes for single-graded and four Fuller gradation curve exponents for continuous-graded, analyzing the effects of different gradations on shear strength and stress-strain curves of interlayer. Results show that increasing coarse aggregate proportion enhances interlayer shear strength from 6.32 MPa to 7.76 MPa. SEM reveals optimal microstructural density with strong aggregate-matrix bonding. Experimental stress-strain data were fitted using Gauss Amp and ExpGrowDec functions to establish elastoplastic constitutive models for single and continuous gradations, respectively. The derived models demonstrate high consistency with experimental curves, providing a foundation for theoretical and numerical simulations of 3DPC interlayer shear mechanics. Findings highlight gradation optimization as a critical factor in improving interfacial mechanical performance through macro-microstructural synergy. This study provides an in-depth analysis of the interlayer shear behavior of 3DPC materials to provide a flexible framework for future material design.

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

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.