Offset Honeycomb Stone Block for Load-Bearing Walls

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Solution Overview

Problem

Natural stone building blocks with cells dug in the mass are fragile and unsuitable for load-bearing walls, and existing honeycomb systems lack high thermal resistance, leading to their limited use in construction.

Innovation Solution

A method for manufacturing insulating, honeycombed building blocks in natural or reconstituted stone or concrete, featuring alternating grooves with offset solids that provide mechanical and thermal insulation, with wider grooves on the edges to accommodate pipes and air flow, enhancing both mechanical strength and thermal resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If hollows are carved into natural stone blocks, then thermal resistance is improved, but mechanical strength deteriorates making the blocks fragile

Engineering Contradiction:
Improvethermal resistanceVSAvoidmechanical strength
Core Design Contradiction:
TemperatureVSStrength

Solution Approach 1:

The block is divided into multiple slices by grooves, with solids positioned to provide mechanical connection between slices. This segmentation creates insulating air gaps while maintaining structural integrity through the strategic placement of connecting solids.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different regions of the block have different properties: edges have wider grooves for thermal insulation and pipe accommodation, while intermediate regions have narrower grooves. Solids are positioned at specific locations to provide mechanical strength where needed while maintaining thermal insulation in other areas.

Inventive Principle:
Principle #3Local quality

2Adaptability or versatility

If grooves are formed to accommodate pipes and air flow, then functionality is improved, but mechanical strength deteriorates

Engineering Contradiction:
Improvefunctional adaptabilityVSAvoidmechanical strength
Core Design Contradiction:
Adaptability or versatilityVSStrength

Solution Approach 1:

The block structure is segmented into slices separated by grooves, allowing pipes to be accommodated in the grooves without compromising the overall structural integrity. The solids connect the slices and provide mechanical strength while the grooves maintain functional adaptability for pipe installation and air flow.

Inventive Principle:
Principle #1Segmentation

3Temperature

If alternating alveolar patterns are created with offset solids, then thermal resistance is improved, but manufacturing complexity increases

Engineering Contradiction:
Improvethermal resistanceVSAvoidmanufacturing complexity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The alveolar patterns in alternating grooves are asymmetric with offset solids, creating effective thermal insulation by disrupting heat transfer paths. The asymmetric pattern is achieved through a systematic manufacturing process that alternates the pattern between adjacent grooves.

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The manufacturing process uses periodic action by alternately creating alveolar patterns in successive grooves. The solids are positioned in an alternating pattern where each groove has a different configuration, creating a periodic structure that enhances thermal insulation while following a repeatable manufacturing sequence.

Inventive Principle:
Principle #19Periodic action

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 blocks achieve high mechanical and thermal resistance, approximately six times higher than standard blocks of the same thickness, making them suitable for load-bearing walls and improving energy efficiency.

Implementation Method 1

The block obtained using this process exhibits not only high mechanical resistance but also high thermal resistance, approximately six times greater than that of walls made with conventional blocks of the same thickness.

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Data Source

PatentEP3030391B1Method for producing a honeycomb insulating building block from natural or reconstituted stone, block produced and wall produced with such a block
Publication Date: 2020.03.18 OCCITANIE PIERRES
  • EP3030391B1 patent drawingFigure 1
  • EP3030391B1 patent drawingFigure 2~2b
  • EP3030391B1 patent drawingFigure 3

AI summary

A method for producing a honeycomb insulating building block from natural or reconstituted stone or from concrete or clay, comprising horizontal faces (11), vertical lateral faces (10) extending in the direction of the largest dimension of the block and vertical end faces (12), with the steps of defining a first honeycomb arrangement and distribution model comprising one or a plurality of cells of predefined shapes and solid material portions of predefined shapes delimiting said cells, defining a second honeycomb arrangement model comprising one or a plurality of cells of predefined shapes and solid material portions of predefined shapes, that cannot be stacked on the previous model, forming, in the body of a block, according to successive vertical geometric planes spaced apart from each other, alternately, grooves that reproduce the first and second honeycomb patterns such that the solid material portions corresponding to each plane or groove are offset relative to the solid material portions of the contiguous plane or planes and the cells corresponding to each plane or groove are communicating and isolated from the cells of the contiguous groove or grooves by a portion of material of uniform thickness.