Engineering Research Equipment Grant: 600 K Testing System

将为标准压缩测试架采购设备， 以下特点：600 K压缩能力，闭环负载 应变控制能力，液压执行机构，数字功能 发电机、70 gpm液压电源和电子控制器 x-y记录器 该设备主要用于的研究 旨在处理高强度，高性能纤维增强 水泥基复合材料（混凝土、砂浆、浆体）。 高 强度意味着延展性（或韧性）为1至2个数量级， 强度大于未增强基体的强度。 主要 本研究的目的是了解纤维增强 这些复合材料的机制，并开发本构模型， 预测其在单调和循环载荷作用下的应力应变响应 装载量。 实验计划需要使用大量的 容量（600 kips）带反馈控制的压缩试验机 能力。

Equipment will be acquired for a standard compression test frame with the following features: 600 K compression capacity, closed-loop load and strain control capability, hydraulic actuator, digital function generator, 70 gpm hydraulic power supply, and electronic controllers and x-y recorder. The research for which this equipment is primarily intended deals with high strength, high performance fiber-reinforced cementitious composites (concrete, mortar, slurry paste). High strength implies a ductility (or toughness) one to two orders of magnitude larger than that of the unreinforced matrix. The main objective of this research is to understand the fiber reinforcing mechanisms of these composites and develop constitutive models to predict their stress-strain response under monotonic and cyclic loadings. The experimental program necessitates the use of a large capacity (600 kips) compression testing machine with feedback control capablity.