Cementitious Repair Formulation with Amorphous Glass and Microspheres
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Solution Overview
Problem
Current concrete repair and maintenance products face issues such as high application complexity, loss of mechanical strength, frequent reapplication due to temperature changes, and health risks from silica-based materials, while existing formulations either lack durability or exhibit cracks and fissures.
Innovation Solution
A hydraulic cement-based formulation combining amorphous glass and solid microspheres, with specific weight and particle size distributions, to enhance mechanical strength, ease of application, and reduce water absorption, while avoiding health hazards and maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If amorphous glass is added to cement formulation, then resistance to movement and coating strength increase, but application complexity increases
Solution Approach 1:
The patent combines amorphous glass particles with hollow glass microspheres in a cementitious matrix to create a composite material that achieves both high strength and ease of application. The amorphous glass provides structural strength while the microspheres improve workability and reduce density, resolving the contradiction between strength enhancement and application complexity.
2Weight of moving object
If hollow glass microspheres are added to cement formulation, then product weight decreases, but compressive strength is lost
Solution Approach 1:
The patent creates a composite formulation combining hollow glass microspheres (for weight reduction) with amorphous glass particles and cementitious materials (for strength provision). This composite approach allows the lightweight microspheres to be compensated by the strength-contributing amorphous glass and cement matrix, simultaneously achieving reduced weight and maintained compressive strength.
3Reliability
If polymer-based waterproofing materials are used, then waterproofing effectiveness increases, but temperature-induced cracking occurs
Solution Approach 1:
The patent changes the material composition parameters by using inorganic cementitious materials and glass particles instead of organic polymers. This parameter change eliminates the thermal expansion and contraction issues inherent in polymer-based materials, providing temperature stability while maintaining waterproofing effectiveness through the impermeable nature of the cured cementitious matrix.
4Ease of operation
If traditional water-based paints are used for coating, then application simplicity increases, but durability under water exposure decreases
Solution Approach 1:
The patent changes the chemical composition parameters from water-based organic paints to inorganic cementitious materials. This parameter change provides water resistance and durability while maintaining ease of application, as the cementitious coating can be applied similarly to traditional paints but cures to form a water-resistant, durable protective layer suitable for submerged or water-exposed concrete structures.
Data Source
AI summary
The present invention refers to a base formulation which serves to form a final product intended for the repair, maintenance or rehabilitation of concrete structures. Primarily, the base formulation contains cement in a percentage of 35% to 45% by weight of the final product. The base formulation also possesses amorphous glass in a proportion of 20% to 30% by weight of the final product, in ground from common glass, recycled glass or soda-lime glass. Finally, the base formulation may further possess solid quartz microspheres in a proportion of 10% to 20% by weight of the final product. This provides the final product with many desirable properties, such as high mechanical strength; high chemical resistance; easier application; easier ability to polish; prevents cold seals, leaving the final product thermally and dimensionally stable, among other desirable properties. The final products may include concrete correctors, waterproofing agents, coatings, among others.