连续矿物纤维增强3D打印砂浆的力学性能  

Mechanical properties of continuous mineral fiber reinforced 3D printed mortar

作　　者：王开强 零朝维 李迪 池胜锋 胡春友 WANG Kaiqiang;LING Chaowei;LI Di;CHI Shengfeng;HU Chunyou(China Construction Third Bureau Group Co.Ltd.,Wuhan 430070,China;China Construction Institute of Advanced Technology,Wuhan 430070,China)

机构地区：[1]中建三局集团有限公司,湖北武汉430070 [2]中国建筑先进技术研究院,湖北武汉430070

出　　处：《新型建筑材料》2024年第9期21-24,40,共5页New Building Materials

摘　　要：为验证连续矿物纤维增强3D打印混凝土的力学性能,分别采用浇筑成型和3D打印成型的方式测试了砂浆抗拉、抗折、抗压强度。结果表明,不同连续矿物纤维复合使砂浆的抗拉强度较素砂浆提高了2%~19%;但由于连续矿物纤维耐磨性较差,抗折强度有所降低,但是对抗压强度有一定提升作用;连续矿物纤维增强砂浆的抗拉强度随连续玄武岩纤维数量的增加而提高,但不呈线性关系;连续纤维与短切纤维复合使用,对砂浆抗拉、抗折强度具有协同作用,也有助于降低短切纤维对抗压强度的不良影响,但其抗压强度仍低于素砂浆。In order to verify the mechanical properties of continuous fiber 3D printing concrete,the tensile strength and flexural/compressive strength of mortar were tested by casting and 3D printing respectively.The results show that the composite of different continuous fibers increases the tensile strength of mortar by 2%~19%.However,due to the poor wear resistance of continuous mineral fibers,it reduce the flexural strength to varying degrees,but increase the compressive strength of mortar.The tensile strength of the continuous mineral fiber reinforced mortar increases with the increase of the number of continuous basalt fibers,but it is not linear.The composite use of continuous fiber and chopped fiber has a synergistic effect on the tensile and flexural strength of mortar,and also helps to reduce the adverse effects of chopped fibers on compressive strength.However,its compressive strength is still lower than that of plain mortar.

关 键 词：连续矿物纤维 3D打印 水泥基材料 力学性能 

分 类 号：TU578.1[建筑科学—建筑技术科学]