A kind of preparation method of high-performance concrete waterproof material

Abstract

The invention discloses a preparation method of a high-performance concrete waterproof material, and relates to the field of waterproof materials. The concrete waterproof material adopts a four-layer structure from the inside to the outside of the wear-resistant waterproof layer, the adhesive layer, the release film layer, and the permeable crystal layer. Waterproof layer preparation-bonding-wear-resistant waterproof layer coating-three-roll calendering-cutting and winding seven processes, the release film layer is used for the coating of the anti-permeation crystal layer and the adhesive layer, and the three-roll calendering makes the layer-to-layer The bonding is tighter and the thickness is more uniform. After the waterproof material of the present invention is applied to the surface layer of concrete, the anti-permeation crystalline layer is bonded to the surface layer of concrete, and has the functions of anti-moisture penetration and self-repairing for the surface layer structure of the concrete; the wear-resistant waterproof layer is far away from the surface layer of concrete and is in contact with air , to achieve long-term stable wear resistance, oil resistance and water resistance.

Description

technical field [0001] The invention relates to the field of waterproof materials, in particular to a preparation method of a high-performance concrete waterproof material. Background technique [0002] Most of the water contained in the formed concrete exists between solid particles in the form of free water, and a small part of water participates in the hydration reaction inside the concrete, changing from liquid water to insoluble hydrates, and most of the water evaporates The form of the concrete leaves the concrete, and with the evaporation of water, a large number of voids appear in the concrete, resulting in an imbalance of internal and external pressure, causing the concrete to dry shrink, and produce fine cracks. When the longitudinal cracks inside the concrete connect with each other to form capillary channels, water seepage occurs. There are many kinds of waterproof materials to solve concrete leakage, which can be divided into body waterproofing agent and surface...

AI Technical Summary

Problems solved by technology

However, it has been found through research that there are still concrete cracks caused by water and oil penetration, which will seriously affect the safety of concrete bridge decks.

[0005] Integrating the preparation methods of waterproof coiled waterproof materials for concrete in the prior art, it is found that there are still the following problems: 1. The waterproof layer of resin and rubber components is used, and several layers of structure are laminated and laminated. Although they have good Waterproof performance, but oil resistance, wear resistance and other properties are poor, can not meet the multifunctional requirements of concrete waterproof materials; 2. In the concrete structure in contact with water for a long time, cracking and penetration of concrete will occur. Existing 3. Although the active salt and calcium compensator in the waterproof material enter the concrete structure, it can improve the anti-penetration ability, but it cannot repair the cracks. There is a great security risk

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