Crystalline Waterproofing

After Crystalline WaterproofingZX-FS-02 material is mixed evenly with an appropriate proportion of water, it is brushed onto the surface layer of the concrete base surface in the form of mortar. It reacts with the components of the concrete within the structure to form a dendritic fibrous crystal structure insoluble in water, which is distributed in the micro-pores and capillary channels of the concrete. Moreover, after the construction and even for a long period of time, under the condition of having water, It can still react and develop towards the inner layer along the fine cracks and capillary channels in the concrete base layer, generating dendritic crystals that clog the tiny crevices. Cement-based permeable crystalline waterproofing materials possess excellent concrete impermeability, carbonation resistance, frost resistance, crack repair ability, as well as non-toxicity and environmental friendliness. Therefore, such waterproofing materials are increasingly adopted in many large-scale underground projects, Bridges and tunnels. As long as the supervision of each construction link is well done, the waterproofing almost has zero leakage.

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It is composed of Portland cement, refined quartz sand and various active compounds, and is a bluish-gray dry powder mixture

Material characteristics

1.It has the characteristics of rapid setting and early strength. After the waterproofing construction is completed, other engineering works can be carried out immediately

2.It has multiple uses. Besides waterproofing and leak sealing, it can also repair other concrete structure defects such as pitted surfaces and damages, and has low requirements for the base surface

3.There is a hard waterproof film on the base surface of the structure, and within the structure, it can generate continuously activated permeable crystals, allowing it to coexist with the concrete structure and providing long-lasting waterproof performance

ZX-FS-02 Principle: Dissolution, penetration and crystallization.

1.Dissolution

When the cement-based permeable crystalline waterproof coating is mixed with water as required, the cement, surfactants, complexing catalysts, active components, etc. within it dissolve rapidly in water. C3AF, C4A, C3S, etc. in cement start to hydrate first, releasing ions such as Ca 2+, and the liquid phase is strongly alkaline. After the surfactant dissolves in water, it reduces the surface tension of the coating to a sufficiently low level: The complexing catalyst begins to complex Ca 2+ into a solution, namely the so-called calcium complex. The active ingredients present a non-sticky colloidal form in the coating system

2.Permeate

The prerequisite for the penetration of active substances into the base concrete is that the base concrete should be fully moistened. When the waterproof coating is applied to the fully moistened concrete surface, the surfactant in the coating rapidly penetrates into the capillary pores of the concrete surface, reducing the surface tension of the water in the capillary pores. As water in the coating penetrates into the base layer, the complex catalyst and colloidal active components in the coating also penetrate into the capillary pores of the base layer. During the osmosis process, the complex catalyst combines with some Ca 2+ in the capillary pores, thereby avoiding the premature reaction between Ca 2+ and the residual trace SiO 3 2- in the capillary pores and preventing the blockage of the capillary pores

3.crystal

The active components penetrating into the capillary pores undergo hydration reactions in a strongly alkaline environment. The complexing catalyst combined with Ca 2+ utilizes its coordination space center and electronic effect to reduce the activation energy of the reaction between the hydration active components and Ca 2+, promoting the formation of insoluble crystals. Secondly, the hydration active component can undergo its own polycondensation reaction, generating hydrophobic white crystalline substances. In addition, the complexing catalyst excites the unhydrated cement clinker such as C 2S in the capillary pore walls to continue hydration, generating insoluble crystals such as hydrated CaSiO 3. The formation of insoluble crystals compacts the base concrete and blocks the channels for water seepage, thereby demonstrating excellent impermeability of the base concrete

Application

Crystalline Waterproofing ZX-FS-02  is applicable to waterproofing and leak sealing on both the front and back surfaces of all new and old concrete and brick structures, including walls, roofs, kitchens, bathrooms, floors, tunnels, civil air defense projects, subways, swimming pools, sewage ponds, large water storage tanks and other projects

Crystalline Waterproofing ZX-FS-02 is particularly suitable for waterproofing and leakage repair projects such as dripping from roof cracks, scattered leakage from floor slabs, leakage at construction joints, and leakage at deformation joints

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Crystalline Waterproofing ZX-FS-02 Waterproofing construction process flow and methods

Construction technology process

Base cleaning and repair → Additional reinforcement treatment at nodes → Paint stirring → First coat application → Repeated application of paint to the designed thickness → Inspection and cleaning → Construction of protective layer

Construction practices

1.Cleaning and finishing of the base surface

2.Clean the dust, bricks, sand grains, crushed stones, debris, oil stains, tools and mortar lumps on the base layer thoroughly

3.Local unevenness of the base layer: The raised parts should be flattened or removed and reworked. The low-lying areas should be repaired and smoothed with polymer cement mortar. When it is relatively thin, a plain slurry mixed with glue can be applied

4.The base layer at the corners should be smoothed into an arc shape. The detailed base layers such as pipes should also be smoothed and polished

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Node additional enhancement processing

An additional waterproof layer should be applied to weak waterproofing areas such as corners, pipe roots, and construction joints

Paint mixing: Before application, mix the cement-based leakage crystalline paint in the container with clean water in a ratio of 4:1 and stir thoroughly until well combined

Coating Application

First coat application: Use a rubber trowel to evenly apply the well-mixed paint onto the base layer, with a thickness controlled at approximately 0.7 to 1.0mm

Repeated application of paint: The second coat should be applied 24 hours later (until it is no longer sticky to the feet), and only after the first coat has completely cured. The application directions should be perpendicular to each other. Two coats can achieve the designed thickness of 2mm It should also be noted that cement-based permeable crystalline waterproofing materials are rigid waterproofing materials with poor crack resistance and are generally used in combination with flexible waterproofing materials

Finally, it is the inspection.

After the construction, carefully inspect all parts of the entire project, such as pipe fittings, corners, construction joints and other weak links, to see if they have been given priority treatment. Whether the waterproof layer remains intact or not, if any problem is found, the cause should be identified and repaired in time. After the coating waterproof layer is completed, there should be no cracks, peeling, flowing, blisters, wrinkles or other phenomena.

Finished products should be well protected

1.Protective measures should be taken for the constructed waterproof layer to prevent damage. Nails, wooden sticks, mortar and other debris left over during construction should be cleared away in a timely manner

2.Operators are not allowed to work in spiked shoes. After the waterproof layer is applied but before it dries, people are not allowed to step on it randomly to avoid damaging the waterproof layer and causing leakage risks

3.Pipes that have been firmly fixed through walls, floor slabs and other places should be protected. During the construction process, no collision or displacement is allowed. 24 hours after the waterproof layer is completed, other construction workers may enter the waterproof layer construction area and must wear soft-soled rubber shoes

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