Apparatus and method for accelerated test of cement concrete resistance to tsa erosion

Abstract

The invention discloses a cement concrete anti-thaumasite form of sulfate attack (TSA) erosion acceleration test device. The device comprises a low-temperature box, a pulse generator, an electrode plate and at least one corrosion pool, wherein a corrosion groove for mounting a concrete test sample is formed in each corrosion pool; a riffle groove for permeating sulfate solution into the corrosiongroove is formed out of the corrosion groove; the electrode plate comprises a positive electrode plate, a negative electrode plate and small holes for seepage; the small holes for seepage are formed in the positive electrode plate and the negative electrode plate; the positive electrode plate and the negative electrode plate are connected with the pulse generator respectively; the corrosion pool is placed into the low-temperature box; and the interface of the corrosion groove and the walls of the riffle groove at the two ends is a comb-like plate. The invention also provides a cement concreteanti-TSA erosion acceleration test method. The pulse generator applies electroosmosis pulse to the two ends of the concrete, so the speed of corrosion caused by that the sulfate solution is permeatedinto the concrete at low temperature is accelerated and the test time is reduced. The test device is simple and easy to operate and has low cost. The test method is simple, reliable and rapid.

Description

technical field [0001] The invention relates to a device and method for testing the chemical corrosion resistance of concrete, in particular to a cement concrete anti-TSA erosion accelerated test device and method. Background technique [0002] For civil engineering, the 20th century was the era of reinforced concrete. From skyscrapers, hydroelectric dams, sea-crossing bridges, highways, various industrial, commercial and residential buildings, as well as national defense and military facilities, the vast majority are reinforced concrete structures. However, while the reinforced concrete structures that symbolize social development and progress are constantly being completed, the durability problems of reinforced concrete structures that bring great hidden dangers to people's lives and safety due to corrosion damage abound, which is shocking. [0003] Sulfate attack is an important factor affecting the durability of cement concrete, and its erosion process is very slow, so ...

AI Technical Summary

Problems solved by technology

At present, the accelerated test method for sulfate attack resistance of cement concrete for ettringite type corrosion is relatively mature, and TSA corrosion is a new type of concrete sulfate attack that has just been discovered in recent years. At present, there is no effective accelerated test method to Testing the TSA Erosion Resistance of Cement Concrete

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