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3D打印混凝土层间性能影响因素与测试方法研究综述
The Review of Research on Influencing Factors and Test Methods of Interlayer Performance of 3D Printed Concrete
2020年第8期
3D打印混凝土;层间强度;配合比;测试方法
3D printed concrete; Interlayer bonding; Mix proportion; Test method
2020年第8期
10.19761/j.1000-4637.2020.08.007.06
国家重点研发计划项目(2018YFC0705800);国家自然科学基金项目(51908120);江苏省基础研究计划(自然科学基金)青年项目(SBK2018041259);中央高校基本科研业务费(2242020K40099)。
於家勉,孙元峰,姚一鸣,鲁 聪
东南大学 土木工程学院,江苏 南京 211189

於家勉,孙元峰,姚一鸣,鲁 聪

於家勉,孙元峰,姚一鸣,等.3D打印混凝土层间性能影响因素与测试方法研究综述[J].混凝土与水泥制品,2020(8):7-11,17.

YU J M,SUN Y F,YAO Y M,et al.The Review of Research on Influencing Factors and Test Methods of Interlayer Performance of 3D Printed Concrete China[J].Concrete and Cement Products,2020(8):7-11,17.

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摘   要:结合国内外研究案例,深入分析了打印工艺、砂浆配合比等3D打印混凝土层间性能的影响因素。在此基础上,进一步探讨了3D打印混凝土层间强度的提高方式。同时总结了抗拉试验、抗剪试验、微观结构分析等层间强度测试方法并分析了各自优缺点。 Abstract: Based on the review of domestic and foreign researches, factors affecting the interlayer bonding of 3D printed concrete were analyzed, such as mix proportion of mortar and printing process. The existing methods of improving the interlayer bonding of 3D printed concrete were summarized. Finally, bonding test methods such as tensile test, shear test and microstructural analysis were compared and summarized.
英文名 : The Review of Research on Influencing Factors and Test Methods of Interlayer Performance of 3D Printed Concrete
刊期 : 2020年第8期
关键词 : 3D打印混凝土;层间强度;配合比;测试方法
Key words : 3D printed concrete; Interlayer bonding; Mix proportion; Test method
刊期 : 2020年第8期
DOI : 10.19761/j.1000-4637.2020.08.007.06
文章编号 :
基金项目 : 国家重点研发计划项目(2018YFC0705800);国家自然科学基金项目(51908120);江苏省基础研究计划(自然科学基金)青年项目(SBK2018041259);中央高校基本科研业务费(2242020K40099)。
作者 : 於家勉,孙元峰,姚一鸣,鲁 聪
单位 : 东南大学 土木工程学院,江苏 南京 211189

於家勉,孙元峰,姚一鸣,鲁 聪

於家勉,孙元峰,姚一鸣,等.3D打印混凝土层间性能影响因素与测试方法研究综述[J].混凝土与水泥制品,2020(8):7-11,17.

YU J M,SUN Y F,YAO Y M,et al.The Review of Research on Influencing Factors and Test Methods of Interlayer Performance of 3D Printed Concrete China[J].Concrete and Cement Products,2020(8):7-11,17.

摘要
参数
结论
参考文献
引用本文

摘   要:结合国内外研究案例,深入分析了打印工艺、砂浆配合比等3D打印混凝土层间性能的影响因素。在此基础上,进一步探讨了3D打印混凝土层间强度的提高方式。同时总结了抗拉试验、抗剪试验、微观结构分析等层间强度测试方法并分析了各自优缺点。

Abstract: Based on the review of domestic and foreign researches, factors affecting the interlayer bonding of 3D printed concrete were analyzed, such as mix proportion of mortar and printing process. The existing methods of improving the interlayer bonding of 3D printed concrete were summarized. Finally, bonding test methods such as tensile test, shear test and microstructural analysis were compared and summarized.

关键词:
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(1)从混凝土的黏结机理分析,3D打印混凝土层间黏结性能主要取决于界面含水率、界面接触面积、界面缺陷、砂浆黏度等因素。而层间间隔时间、喷头高度、砂浆配比则通过控制上述因素对黏结性能产生影响。砂浆配合比的试验数量较少,无法对实际3D打印混凝土生产起指导作用,仍需扩大试验范围,研究各组分的影响。工艺参数的相关试验更为详尽具体,但由于无法解释含水率的影响趋势,试验缺乏理论依据。近年来,新旧界面混凝土含水率的影响机理尚未有突破性进展,仍有待进一步研究。

(2)仍缺乏经济高效、高自由度的提高3D打印混凝土层间黏结性能的方法。目前最为完善、高效的方法是层间涂抹改性砂浆,但依靠砂浆提高黏结性能仍然是有限的,其力学性能难以适用于大型建筑施工中。为了进一步推广3D打印混凝土的运用范围,应继续寻找将3D打印混凝土与钢筋、纤维等加固材料有机结合的方法,在不降低3D打印自由度的同时,提高其层间性能。

(3)3D打印混凝土层间抗拉强度的力学测试方法均有一定瑕疵,由于局部偏心、受荷面积不定等原因,测试结果均偏离实际抗拉强度。且不同学者的研究测试方法不尽相同,对研究人员重复试验和沟通交流造成了困难。而微观检测方法较为成熟,但只能定性分析层间黏结性能,缺乏定量分析手段。因此,急需可靠的层间黏结强度测试方法,作为广泛地研究层间强度的试验基础。

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於家勉,孙元峰,姚一鸣,.3D打印混凝土层间性能影响因素与测试方法研究综述[J].混凝土与水泥制品,2020(8):7-11,17.

YU J M,SUN Y F,YAO Y M,et al.The Review of Research on Influencing Factors and Test Methods of Interlayer Performance of 3D Printed Concrete China[J].Concrete and Cement Products,2020(8):7-11,17.

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