Research on the damage evolution and dynamic constitutive model of geopolymeric concreteat elevated temperatures
WANG Zhi-kun1，XU Jin-yu1,2，REN Wei-bo1，BAI Er-lei1,DONG Zong-ge3
1.Department of Airfield and Building Engineering, Air Force Engineering University, Xi’an 710038, China;
2.College of Mechanics and Civil Architecture, Northwest Polytechnic University, Xi’an 710072, China
3.The Airforce Equipment Department,Beijing 100843,China
Abstract：The damage evolution law and dynamic constitutive model of geopolymeric concrete at elevated temperatureswere investigated using a high temperature SHPB system. The results show that the major mechanical performance indexes reveal prominent temperature and strain rate effect.The wave impedance can be used to measure the thermal damage of geopolymericconcrete, and the damage evolution law has a good agreement with the actual situation. Based on the static constitutive model, the dynamicdamage constitutive model of geopolymeric concreteconsidering effects of temperature and strain ratewasestablished, and the indexes can be determined by experimental results. This model can accurately describe the dynamic characteristics of geopolymeric concreteat elevated temperatures.
王志坤1，许金余1,2，任韦波1，白二雷1，董宗戈3. 高温下地聚合物混凝土损伤演化及动态本构模型研究[J]. 振动与冲击, 2016, 35(2): 110-115.
WANG Zhi-kun1，XU Jin-yu1,2，REN Wei-bo1，BAI Er-lei1,DONG Zong-ge3. Research on the damage evolution and dynamic constitutive model of geopolymeric concreteat elevated temperatures. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(2): 110-115.
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