EDAWELD COMPANY LIMITED , https://www.jsedaweld.com
The underlying cause
Deformation
Countermeasures
Flexible → Paint + Coil
Compact
Rigid → Additive + Surface Coating Seal
Flexible: Coating
Pathways for water infiltration: Holes, gaps, seams
â— Factors contributing to water penetration: Concrete and mortar are porous structures, excessive water evaporation, shrinkage and creep, thermal expansion and contraction, temperature differences, liquid and gas erosion, external forces, hydrostatic pressure, etc., all contribute to the formation of voids.
â— Waterproofing requirements: Impermeable, no pinholes
â— Practical theory summary: Waterproof core: Blocking pores (making it dense)
Perfect waterproofing: Extended lifespan, fatigue-resistant, durable (resistant to deformation)
â— Three tiers of waterproofing: Sealing layer (bottom), primary protective layer (middle), and enhanced layer (top)
Sealing layer: Blocks pores and fine cracks in the substrate, acting as the first line of defense.
1. Functions of the sealing layer:
â— Seals micro-pores and cracks in the substrate, preventing delamination, piercing, and leakage
â— Acts as a buffer to absorb stress from the substrate, protecting the primary layer
â— Provides good water resistance and bonds well with the waterproofing layer
2. Materials with sealing layer functionality:
â— Rigid waterproof materials, coatings, and self-adhesive or polypropylene coils
Primary protective layer: The core level of waterproofing should possess high strength, elongation, impermeability, water resistance, puncture resistance, impact resistance, heat resistance, low-temperature flexibility, and durability.
1. Key functions:
â— Strongly adheres to the sealing layer and withstands structural deformation together
â— Resists high and low temperatures, water penetration, external impacts, natural aging, and chemical attacks
â— Compatible with the surface material
2. Materials:
â— Coatings and coils with a certain thickness
â— Reinforcement layer: Meets specific waterproofing needs
1. Function:
â— Local reinforcement: Areas with large deformations like joints
â— Comprehensive reinforcement: Planting zones, sports facilities, heavy loads, swimming pools, corrosion resistance, aging resistance, etc.
2. Materials:
Coatings and coils with a certain thickness
In addition to the above points, it’s important to note that the success of any waterproofing system lies in its ability to adapt to various environmental stresses while maintaining its integrity over time. Modern waterproofing solutions often incorporate multiple layers to ensure comprehensive protection against moisture ingress. For instance, flexible coatings can be applied alongside rigid additives to create a hybrid system that combines the benefits of both approaches—flexibility for movement and rigidity for strength. Furthermore, surface treatments like sealants play an essential role in enhancing the durability of these systems by forming a barrier against environmental factors such as UV exposure and chemical degradation.