长沙理工大学学报(自然科学版)
3D打印混凝土墙体材料强度与高度的关系研究
作者:
作者单位:

(1.东南大学 土木工程学院,江苏 南京 211189;2.中铁建苏州设计研究院有限公司,江苏 苏州 215000)

作者简介:

蔡建国(1984—)(ORCID:0000?0003?1502?9917),男,教授,主要从事混凝土结构先进建造技术方面的研究。E?mail: j.cai@ seu.edu.cn

通讯作者:

蔡建国(1984—)(ORCID:0000?0003?1502?9917),男,教授,主要从事混凝土结构先进建造技术方面的研究。E?mail: j.cai@ seu.edu.cn

中图分类号:

TU528

基金项目:

江苏省政策引导类计划(国际科技合作/港澳台科技合作)——重点国别产业技术研发合作项目(BZ2021036);国家重点研发计划(2021YFB3802005)


Study on the relationship between strength and height of 3D printed concrete wall material
Author:
Affiliation:

(1.School of Civil Engineering, Southeast University, Nanjing 211189, China; 2. China Railway Construction Suzhou Design & Research Institute Co., Ltd., Suzhou 215000, China)

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    摘要:

    【目的】研究3D打印混凝土墙体材料抗压与劈裂抗拉强度沿高度的变化规律。【方法】以现浇混凝土材料的力学性能试验为参照,设计3个试验分别研究层数和加载方向对3D打印混凝土试块抗压强度、劈裂抗拉强度的影响。【结果】3D打印混凝土试块的抗压性能在x向加载时最强,在z向加载时最弱;劈裂抗拉强度随层数的增加呈先增后减的趋势;棱柱体试块的轴心抗压强度大于相应现浇混凝土试块的抗压强度。【结论】实际生产中应该合理规划打印流程以使打印混凝土获得最佳力学性能。

    Abstract:

    [Purposes] The objective of the work is to investigate the variation of the compressive and splitting tensile strength along the height of 3D?printed concrete wall materials. [Methods] Based on the mechanical property test of cast?in?place concrete material, three tests were designed to study the influence of the height and loading direction on the axial compressive strength and splitting tensile strength of printed concrete. [Findings] The compressive performance of printed concrete was the strongest in x?direction loading and the weakest in z?direction loading. The splitting tensile strength increased first and then decreased with the height of the layer. The axial compressive strength of the prismatic test blocks was higher than that of the corresponding cast?in?place concrete test blocks. [Conclusions] In practical production, the printing process should be reasonably designed to obtain the best mechanical properties of printed concrete.

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引用本文

蔡建国,林泽宇,杜彩霞,等.3D打印混凝土墙体材料强度与高度的关系研究[J].长沙理工大学学报(自然科学版),2022,19(4):75-84.
CAI Jianguo, LIN Zeyu, DU Caixia, et al. Study on the relationship between strength and height of 3D printed concrete wall material[J]. Journal of Changsha University of Science & Technology (Natural Science),2022,19(4):75-84.

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  • 在线发布日期: 2023-01-16
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