Reinforced Magnesium Silicate Composite for Low-pH Fiber Bonding
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Solution Overview
Problem
High pH values in conventional cement pore solutions cause degradation of carbon and glass fibers, necessitating additional treatments or protective coatings, while steel production is environmentally impactful.
Innovation Solution
A composite material using MgO- or olivine-based binders with pH values below 11, allowing direct use of carbon and glass fibers without further treatment, and optionally incorporating steel reinforcement with protective coatings or pH-raising additives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional steel reinforcement is used in concrete, then tensile strength is improved, but corrosion resistance deteriorates due to rusting in concrete pores
Solution Approach 1:
The patent uses fiber-reinforced polymer (FRP) composite materials as reinforcement bars, combining non-corrosive fibers (glass, carbon, or aramid) with polymer matrix materials. This composite structure provides both the required tensile strength and corrosion resistance that conventional steel lacks, directly resolving the technical contradiction between strength and reliability.
2Strength
If fiber reinforcement is added to concrete, then tensile strength is improved, but bond strength between reinforcement and concrete deteriorates due to smooth fiber surfaces
Solution Approach 1:
The patent applies local quality by creating surface irregularities and variations in the fiber reinforcement bars. The bars feature localized roughness, ridges, grooves, or embedded anchoring elements at specific locations to enhance bond strength with concrete, while maintaining the smooth surface properties of the fiber material itself for corrosion resistance and tensile strength.
3Reliability
If smooth surface fiber bars are used, then corrosion resistance is improved, but bond strength with concrete deteriorates
Solution Approach 1:
The patent applies local quality by creating surface irregularities and variations in the fiber reinforcement bars. The bars feature localized roughness, ridges, grooves, or embedded anchoring elements at specific locations to enhance bond strength with concrete, while maintaining the smooth surface properties of the fiber material itself for corrosion resistance and tensile strength.
4Strength
If conventional steel reinforcement is used, then structural strength is improved, but service life deteriorates due to corrosion over time
Solution Approach 1:
The patent uses fiber-reinforced polymer (FRP) composite materials as reinforcement bars, combining non-corrosive fibers (glass, carbon, or aramid) with polymer matrix materials. This composite structure provides both the required tensile strength and corrosion resistance that conventional steel lacks, directly resolving the technical contradiction between strength and reliability.
5Reliability
If fiber reinforcement bars are used, then corrosion resistance is improved, but manufacturing complexity increases due to surface treatment requirements
Solution Approach 1:
The patent uses fiber-reinforced polymer (FRP) composite materials as reinforcement bars, combining non-corrosive fibers (glass, carbon, or aramid) with polymer matrix materials. This composite structure provides both the required tensile strength and corrosion resistance that conventional steel lacks, directly resolving the technical contradiction between strength and reliability.
Data Source
AI summary
The invention relates to a composite material having cement stone made of an MgO-based and/or olivine-based binder and reinforcement means for increasing load-bearing capacity, wherein the reinforcement means are durably resistant to pH values below 11 and/or are protected against pH values below 11. In addition or as an alternative, means for raising the pH value of the porous solution of the cement stone can be added to the MgO-based and/or olivine-based binder of the cement stone.