Experimental device for the whole process of concrete cracking based on real environment

Abstract

The invention provides a concrete cracking overall process testing device based on a true environment. The device comprises a base, wherein an environmental box, a concrete sample containing device, a true environment simulation system and a loading system are arranged on the base; the environmental box is isolated from the surroundings; the concrete sample containing device is arranged in the environmental box and comprises a fixed chuck, a movable chuck and a sample middle fixed side formwork, the fixed chuck, the movable chuck and the sample middle fixed side formwork are spliced to form a concrete sample containing space, the fixed chuck is fixedly arranged in the environmental box, and the movable chuck is movably arranged; the environmental box and the concrete sample containing space are provided with temperature sensors; the true environment simulation system at least comprises a temperature regulation device which is arranged in the environmental box and the concrete sample containing device to simulate the set true environment at temperature; the loading system enables the movable chuck to be fixed or move in the axis direction, and a displacement / deformation sensor is arranged on the movable chuck to sense deformation of a concrete sample; a stress sensor is arranged to sense the load borne by the sample. The device can be used for testing the whole process of development of temperature, stress and other factors of concrete in a changeable environment from the test angle.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and hydropower engineering, and relates to a method for testing the whole process of cracking of concrete based on a real environment and a test device using the method, more specifically, a device for the simulation test of the whole process of cracking of large-volume concrete. Background technique [0002] For a long time, "no dam, no crack" has been an unsolved problem in the world. The appearance, performance and safety of the dam structure are affected by the appearance of cracks, and ultimately affect people's lives and properties. How to reduce or even prevent cracks has become a problem that project builders must consider. With the advancement of theoretical and technical research in related fields, the research work on dam concrete cracks has made significant progress, especially the temperature control and crack prevention of large-volume concrete. At present, a relatively com...

AI Technical Summary

Problems solved by technology

The atmospheric environment not only surrounds the entire concrete project in real time, but also the vagaries of the atmospheric environment have an important impact on the project, especially the temperature, humidity, rainfall, wind speed and solar radiation of the surrounding environment, which seriously affect the generation of concrete cracks , how the influence of atmospheric environmental factors on the generation of concrete cracks, and the extent of its influence, there is no conclusion yet

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