关于复合材料-土建结构的力学特性与加固技术探究

Research on Mechanical Characteristics and Reinforcement Technology of Composite Civil Structure

采用直径0.3mm聚酯纤维高分子复合材料对土建混凝土结构进行优化改性处理,发现混凝土材料的抗压性能可最大提升17.4%,抗拉性能可最大提升150.7%,微分子结构分析中发现,复合材料纤维应用于改性混凝土工艺,根本原因是将部分低键能的分子键转化为高键能的化学键。当前工艺对更长的复合材料纤维应用有制约,容易在混凝土成型中产生裂隙和气泡,未来通过优化工艺水平,可以将更长的复合材料纤维应用到改性混凝土中,对土建结构的力学特征加固过程提供更显著的改进效果。

Using 0.3mm diameter polyester fiber polymer composite to optimize the modification of civil concrete structure,it is found that the compressive performance of concrete material can be increased by 17.4%and the tensile performance can be increased by 150.7%.By the analysis of micro molecular structure,it is found that the fundamental reason for the application of composite fiber in the modification of concrete process is that part of the molecular bonds with low bond energy are transformed into chemical bonds with high energy.The current technology has restrictions on the application of longer composite fiber,which is easy to produce cracks and bubbles in concrete forming.In the future,by optimizing the technology level,longer composite fiber can be applied to modified concrete,which can provide more significant improvement effect on the reinforcement process of mechanical characteristics of civil structure.