冷冻组合砂浆劈裂抗拉及抗压强度试验研究
Experimental Study on Splitting Tensile and Compressive Strength of Frozen Composite Mortar
摘要: 针对功能梯度混凝土界面粘结薄弱的问题，本文提出了一种基于冷冻工艺提升功能梯度混凝土界面粘结性能的技术，核心目的是探明该工艺浇筑形成的组合块体界面形状对粘结性能的影响。试验采用液氮快速冻结新拌砂浆以暂停其水化反应，随后与新拌砂浆共同浇筑成型；在此基础上，围绕方形界面的冷冻与普通砂浆组合试件(以下统称预冷冻组合块体)的界面粘结性能，开展劈裂抗拉与抗压强度测试，系统分析了其力学强度、破坏形态。结果表明：界面形状会影响组合块体的粘结性能。
Abstract: Aiming at the problem of weak interfacial bonding in functionally graded concrete (FGC), this paper proposes a technology based on the freezing process to improve the interfacial bonding performance of FGC. The core objective is to investigate the influence of the interface shape of composite blocks formed by casting via this process on the bonding performance. In the experiment, fresh mortar was rapidly frozen by liquid nitrogen to suspend its hydration reaction, and then cast and molded together with fresh mortar. On this basis, splitting tensile and compressive strength tests were conducted focusing on the interfacial bonding performance of composite specimens consisting of frozen mortar with square interface and ordinary mortar (hereinafter collectively referred to as pre-frozen composite blocks), and their mechanical strength and failure modes were systematically analyzed. The results show that the interface shape affects the bonding performance of composite blocks.
文章引用：刘昊飞, 毛江鸿, 夏银飞. 冷冻组合砂浆劈裂抗拉及抗压强度试验研究[J]. 土木工程, 2026, 15(5): 1-9. https://doi.org/10.12677/hjce.2026.155109

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