Composite System Using Calcium-Sulfo-Aluminate Cement
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Solution Overview
Problem
Existing composite systems for floors and walls face challenges with long production times due to slow curing of concrete, leading to increased costs and instability, which affects mechanical stability and resilience, resulting in potential breaks and cracks.
Innovation Solution
A composite system comprising a mineral substrate formed with a calcium-sulfo-aluminate cement mixture and a polymer layer, specifically using Ye'elimit-containing cement and a free-radically cured polymer layer, such as polymethyl methacrylate, allowing for rapid setting and hardening within a few hours, enhancing adhesive tensile strengths and enabling quicker use and production independence from weather conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional concrete is used as a binder in composite systems, then the system provides adequate mechanical strength, but the curing and drying time is excessively long (several days)
Solution Approach 1:
The patent changes the chemical composition parameters of the binder by using calcium sulfo-aluminate cement (CSA cement) instead of traditional Portland cement. This chemical substitution fundamentally alters the setting and hardening characteristics, reducing curing time from several days to just a few hours while maintaining bond stability through the formation of ettringite crystals that provide structural integrity.
Solution Approach 2:
The patent creates a composite binder system combining CSA cement with organic additives and potentially other cementitious materials. This composite approach leverages the rapid setting properties of CSA cement while incorporating materials that enhance bond stability and durability, resolving the contradiction between speed and reliability.
2Productivity
If the mineral substrate is applied quickly to reduce production time, then productivity increases, but the mechanical stability and bond strength may be compromised
Solution Approach 1:
The patent modifies the chemical parameters of the binder system to achieve rapid strength development. The CSA cement formulation with specific calcium sulfate content and organic additives creates a binding matrix that gains sufficient tensile bond strength within hours, enabling quick production cycles without sacrificing mechanical performance.
Solution Approach 2:
The patent introduces organic additives and potentially polymer modifiers as intermediary substances that accelerate the binding process and enhance adhesion properties. These intermediaries facilitate rapid bond formation between the mineral substrate and subsequent layers, allowing high productivity while maintaining or improving tensile bond strength.
3Adaptability or versatility
If the composite system uses traditional cement mixtures, then the material is easy to manufacture, but the production process is highly dependent on weather conditions
Solution Approach 1:
The patent changes the hydration kinetics parameters of the cement system by using CSA cement, which sets and hardens rapidly regardless of ambient conditions. This chemical modification makes the manufacturing process less sensitive to weather variations such as temperature fluctuations, humidity, and precipitation, thereby improving weather independence while maintaining manufacturing simplicity.
4Manufacturing precision
If the polymer layer is applied after long curing time to ensure proper bonding, then bond quality is maintained, but the overall production time increases
Solution Approach 1:
The patent fundamentally changes the time-parameter of the substrate preparation by using CSA cement that achieves sufficient surface strength and stability within hours rather than days. This allows the polymer layer to be applied much earlier in the process while maintaining bond quality, thereby reducing total production time without compromising manufacturing precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composite system achieves rapid production and high mechanical stability with improved adhesive tensile strengths, allowing for quicker use and reduced production time, while maintaining stability and resilience, thus addressing the issues of slow curing and mechanical instability in traditional systems.
Implementation Method 1
The essential component of CSA cements is the cement clinker phase Ye'elimit (with the chemical composition 4CaO·3Al2O3·SO3), which reacts with water to form ettringite (3CaO·Al2O3·3CaSO4·32H2O)
Implementation Method 2
A polymer layer, in particular comprising or consisting of polymethyl methacrylate (PMMA), can be walked on and fully load-bearing after only a few hours (e.g., after just 2 to 3 hours)
Data Source
AI summary
The invention relates to a composite system comprising a mineral substrate and a polymer layer, as well as a method for producing a composite system.