Compressed Wood Agglomerate Blocks with Hydraulic Binder
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Solution Overview
Problem
Existing wood agglomerate materials for construction are either fragile, low in density, or not adapted for use as carrier elements, often incorporating significant amounts of mineral fillers that increase weight and reduce thermal insulation qualities.
Innovation Solution
A compressed wood agglomerate block comprising a high proportion of wood particles (75-95% by volume) and a hydraulic binder (5-25% by volume), with the mixture being maintained under pressure during binder hardening to achieve high density and mechanical resistance, similar to raw wood.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If significant amounts of mineral fillers are added to wood agglomerate, then the dimensional stability and density of the block are improved, but the weight of the block increases and thermal insulation qualities decrease
Solution Approach 1:
The invention extracts and removes the harmful mineral filler component from the wood agglomerate composition. By using only wood particles and a binding agent, the patent eliminates the source of excessive weight while maintaining structural integrity through the natural properties of wood and the bonding mechanism.
Solution Approach 2:
The invention changes the compositional parameters by setting the wood particle content to a minimum of 90% by volume and the binding agent to a maximum of 10% by volume. This parameter optimization achieves high density and strength without requiring mineral fillers, thereby avoiding the weight penalty while maintaining dimensional stability.
2Stability of the object's composition
If significant amounts of mineral fillers are added to wood agglomerate, then the dimensional stability of the block is improved, but the thermal insulation qualities decrease
Solution Approach 1:
The invention extracts and removes the harmful mineral filler component from the wood agglomerate composition. By using only wood particles and a binding agent, the patent eliminates the source of poor thermal insulation while maintaining structural integrity through the natural properties of wood and the bonding mechanism.
Solution Approach 2:
The invention changes the compositional parameters by setting the wood particle content to a minimum of 90% by volume and the binding agent to a maximum of 10% by volume. This parameter optimization preserves the excellent thermal insulation properties of wood while achieving sufficient dimensional stability through the high wood content and effective binding.
3Strength
If pressure is applied to wood and cement mixture during moulding, then the density and mechanical resistance of the block are improved, but the cement hardening process becomes more complex
Solution Approach 1:
The invention merges the compaction and curing processes into a single continuous operation. By maintaining pressure throughout the entire hardening period, the patent eliminates the need for separate compaction and curing stages, simplifying the overall process while achieving high density and mechanical resistance.
Solution Approach 2:
The invention maintains continuous pressure application throughout the cement hardening process. This continuous action ensures optimal densification and strength development without requiring intermittent or complex multi-stage pressing operations, thereby reducing process complexity while maximizing mechanical resistance.
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 solution results in blocks with excellent mechanical properties, including high resistance to compression and water, improved fire resistance, and thermal insulation, while maintaining a reduced weight compared to concrete, making them suitable for load-bearing structures.
Implementation Method 1
an initial mixture comprising particles of wood and a hydraulic binder is maintained under pressure throughout the hardening of the binder
Data Source
AI summary
The invention relates to compressed blocks of wood agglomerate, comprising wood particles and a hydraulic binder, produced by a method in which an initial mixture comprising wood particles and a hydraulic binder is held under pressure for the duration of the hardening of the binder. The invention further relates to a method for production of said blocks and the use thereof in particular, as construction elements for buildings.