基于响应面法的高性能合成纤维道面混凝土冻融及冻蚀劣化分析

冻融破坏是我国寒区和盐渍土地区机场道面混凝土中最常见的一种破坏形式。国内外对于盐溶液以及冻融循环协同对混凝土所产生破坏的重视程度越来越高，而针对纤维道面混凝土在盐溶液下的抗冻性能的研究则相对较少。本文以高性能合成纤维道面混凝土为研究对象，基于响应面法（RSM），研究冻融循环次数、硫酸钠溶液浓度以及纤维掺量这三种因素及因素之间对道面混凝土相对动弹模量Pn的影响规律，建立了相对动弹模量Pn与这三种因素之间的关系模型。该模型的精度较高，用来解释和预测Pn随三种因素变化而产生的变化是合适且有效的。

Analysis of Freeze-thaw and Freeze-erosion Deterioration of High Performance Synthetic Fiber Pavement Concrete Based on RSM

Freeze-thaw damage is the most common form of destruction in airport pavement concrete in cold regions and saline soils in China. At home and abroad, the coordination degree of salt solution and freeze-thaw cycle is more and more important for the destruction of concrete, and the research on the frost resistance of fiber concrete pavement under salt solution is relatively rare. In this paper, high-performance synthetic fiber pavement concrete was selected as the research object, based on response surface methodology (RSM), the influence of freeze-thaw cycles, concentration of sodium sulfate solution, and fiber contents on the relative dynamic modulus Pn of pavement concrete was studied. And then relationship model between Pn and these three factors was built. The accuracy of the model is relatively high, and it is suitable and effective to explain and predict the changes of relative dynamic modulus Pn with the three factors.