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冷缩-干缩裂缝是工程中混凝土开裂的主要形式。本文介绍了一种混凝土冷缩-干缩应力试验机,与价格昂贵的混凝土温度应力试验机相比,构造简单,操作方便。该试验机可以模拟实际工程中混凝土经历的真实温升、降温和干燥过程,准确全程测量混凝土的冷缩应力、干缩应力和干缩变形,直接给出干缩应力一应变曲线。为指导工程预防冷缩-干缩裂缝提供了一种便利的测量手段。
Cold shrinkage - shrinkage cracks in the project is the main form of concrete cracking. In this paper, a kind of concrete shrinkage-shrinkage stress testing machine is introduced. Compared with the expensive concrete temperature stress testing machine, the structure is simple and the operation is convenient. The test machine can simulate the real temperature rise, cooling and drying process of the concrete in the actual project, and accurately measure the shrinkage stress, shrinkage stress and shrinkage deformation of the concrete accurately and directly, and give the shrinkage stress-strain curve directly. In order to guide the project to prevent shrinkage - shrinkage cracks provide a convenient means of measurement.