Concrete structure joint anti-seepage construction method

Abstract

The invention discloses a concrete structure joint anti-seepage construction method. The concrete structure joint anti-seepage construction method comprises the following steps that an old concrete joint interface is roughened and sprayed water to be kept wet; after no water exists on the old concrete joint interface, a permeable crystalline inorganic waterproof material is sprayed to the old concrete joint interface; after the permeable crystalline inorganic waterproof material is cured, clean water is used for flushing the old concrete joint interface, harmful substances replaced by the permeable crystalline inorganic waterproof material from the concrete are removed; a steel plate waterstop belt is arranged on the old concrete joint interface, the steel plate waterstop belt interface iscoated with polymer emulsion, and polymer cement-based waterproof material is coated; a cement paste mixture with a certain thicknesses and mixed with the permeable crystalline inorganic waterproof material is sprayed to the old concrete joint interface; and new structure concrete is poured; and the shortcomings of anti-seepage treatment of a traditional concrete structure joint can be overcome,the use material is few, the cost is low, efficiency is high, and the concrete structure joint seepage can be effectively prevented.

Description

Technical field [0001] The invention relates to the technical field of concrete construction, in particular to a construction method for preventing leakage of a concrete structure joint. Background technique [0002] The anti-leakage treatment of concrete structure joints is the basic link of engineering structure waterproofing. The incompatibility of the interface between the new and the old concrete and the improper handling of the cold joints are the main causes of water leakage in the joints of the concrete structure, and it is also one of the problems in the waterproofing of the concrete structure. The construction joints of concrete structures, post-pouring belts, joints of structural members, superimposed members, etc. all have problems dealing with the interface between new and old concrete. [0003] The traditional anti-leakage treatment for joints of concrete structures mainly relies on the compactness and impermeability of the concrete itself. By improving the impermea...

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Problems solved by technology

[0004] However, due to the incompatibility of the interface between old and new concrete, there are often cold joints and the lack of sufficient grip between concrete and steel plate waterstops or rubber expansion waterstops. At the same time, there are a series of objective reasons such as gaps caused by defects in the overlapping position of the waterstops. Although the above-mentioned series of measures have been taken in the construction to ensure the anti-leakage of the concrete structure joints, the joint leakage still occurs. Once leakage occurs, the leakage control is very troublesome, time-consuming and laborious, and affects the concrete structure engineering. Normal use and durable safety

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