Interlocking Composite Construction Blocks for Mortar-Free Assembly
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Solution Overview
Problem
Existing concrete masonry units (CMU) are labor-intensive to install, require skilled labor, and have limitations such as being heavy, brittle, and needing mortar for structural integrity, which increases installation costs and is not suitable for demanding exterior wall applications.
Innovation Solution
A multi-segment construction block design that interlocks horizontally, vertically, and orthogonally without mortar, using a natural fiber thermoplastic composite material with a low coefficient of thermal expansion, providing self-alignment and structural integrity, and allowing for reinforcement and utility passages, made through compression molding or similar processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If concrete masonry units are used for wall construction, then structural integrity is achieved, but labor costs increase significantly due to manual alignment and mortar application requirements
Solution Approach 1:
The construction block is divided into multiple segments that can interlock with each other. Each segment contains recesses and protrusions that enable mechanical interlocking, eliminating the need for mortar while maintaining structural integrity. The segmented design allows for easier handling and installation.
Solution Approach 2:
The patent introduces an interlocking mechanism as an intermediary between blocks, replacing mortar as the bonding agent. This mechanism includes complementary geometric features (recesses and protrusions) that facilitate automatic alignment and mechanical connection, reducing labor requirements while ensuring structural strength.
2Reliability
If traditional concrete material is used in CMU's, then durability is achieved, but weight increases making blocks heavy and difficult to install
Solution Approach 1:
The patent employs composite materials consisting of concrete combined with lighterweight materials such as foam or air pockets within the block structure. This composite approach reduces the overall weight of the blocks while preserving the durability and strength characteristics of concrete, making them easier to handle and install.
3Stress or pressure
If concrete is used for CMU construction, then compressive strength is achieved, but brittleness increases reducing impact resistance
Solution Approach 1:
The patent incorporates composite materials that combine concrete with more ductile components such as polymer fibers or metal reinforcement distributed throughout the matrix. This composite structure maintains the high compression strength of concrete while adding toughness and impact resistance, reducing brittleness.
Solution Approach 2:
The patent applies different material properties to different regions of the block. High-strength concrete is used in areas requiring compressive strength, while more ductile materials or reinforcement are concentrated in zones susceptible to impact or tensile stresses, optimizing both compression strength and impact resistance.
4Strength
If mortar is used for adhesion in CMU walls, then structural bonding is achieved, but installation time and labor costs increase
Solution Approach 1:
The patent removes mortar from the construction process by designing blocks with built-in interlocking mechanisms. The geometric features (recesses and protrusions) provide mechanical bonding without requiring separate mortar application, significantly reducing installation time and labor costs while maintaining structural integrity.
Solution Approach 2:
The blocks are designed to self-align and self-bond through their interlocking geometric features. When placed together, the recesses and protrusions automatically engage to create structural connections, eliminating the need for manual mortar application and alignment adjustments, thereby reducing installation time.
5Manufacturing precision
If skilled labor is used for CMU installation, then proper alignment and structural integrity are achieved, but installation costs increase
Solution Approach 1:
The blocks incorporate self-aligning geometric features that guide proper positioning and orientation during installation. The complementary recesses and protrusions automatically align blocks horizontally and vertically, eliminating the need for skilled labor to manually adjust alignment, thereby reducing installation costs while maintaining precision.
Solution Approach 2:
The patent employs asymmetric geometric features on block surfaces that provide built-in alignment guides. These asymmetric elements ensure correct orientation and positioning during installation, reducing the skill level required for proper assembly while maintaining alignment precision.
Data Source
AI summary
Embodiments relate to an enhanced method for building walls by primarily reducing the time for assembly. The designs are for molded multi-segment plastic composite construction blocks that interlock horizontally, vertically and orthogonally with a clearance-fit, do not require mortar for structural integrity and are self-aligning. The blocks are molded out of natural-fiber reinforced recycled thermoplastic composites and are stronger and lighter than CMU's.