HMV Slag Insulation Layer for Shrinkage Settlement
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Solution Overview
Problem
Climate change-induced longer and hotter heat/dry periods lead to load-independent soil settlement due to soil shrinkage, which existing methods for preventing load-dependent soil settlement cannot address, posing a risk to building stability and thermal insulation requirements.
Innovation Solution
A thermal insulation layer composed of processed and quality-tested municipal waste incineration (HMV) slag is applied to the subsoil, which can be compacted to high density and tailored in thickness based on water content, shrinkage parameters, and temperature zones to prevent soil settlement and meet thermal insulation standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional soil stabilization methods are used to prevent load-dependent settlement, then foundation stability is improved, but protection against load-independent settlement due to climate change is insufficient
Solution Approach 1:
The patent changes the material parameters by using HMV slag with specific thermal conductivity properties (lower than traditional materials) and compaction density (≥92% Proctor density) to create a layer that simultaneously addresses both load-dependent and load-independent settlement issues under climate change conditions
Solution Approach 2:
The patent employs a composite approach by combining HMV slag (processed waste material) with specific physical properties to create a multi-functional layer that provides both mechanical stabilization and thermal insulation, adapting to climate change effects while maintaining foundation stability
2Loss of energy
If thermal insulation requirements are increased to meet regulations, then energy efficiency is improved, but soil shrinkage and load-independent settlement risks increase
Solution Approach 1:
The HMV slag layer serves multiple functions simultaneously: it provides thermal insulation to meet energy efficiency regulations while also preventing soil shrinkage and load-independent settlement, making the solution universally applicable to both energy and stability requirements
Solution Approach 2:
By selecting HMV slag with specific thermal conductivity parameters and compaction density, the patent achieves optimal balance between thermal insulation performance and soil stability, ensuring both energy efficiency and prevention of shrinkage-induced settlement
3Reliability
If HMV slag layer thickness is increased to prevent soil shrinkage, then protection against load-independent settlement is improved, but material consumption and cost increase
Solution Approach 1:
The patent optimizes the thickness parameter of the HMV slag layer based on specific soil conditions, water content, and shrinkage parameters, achieving maximum protection effect with minimum material quantity through precise parameter control
Solution Approach 2:
The patent applies HMV slag layer with thickness tailored to specific soil conditions rather than uniform excessive thickness, providing sufficient protection against shrinkage settlement while avoiding unnecessary material consumption
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 HMV slag layer effectively stabilizes the subsoil against shrinkage-induced settlement, providing a stable base for buildings while meeting stringent thermal insulation requirements, with a thermal conductivity significantly lower than traditional materials, thus ensuring structural integrity and compliance with thermal regulations.
Implementation Method 1
the layer is a thermal insulation layer to meet the thermal insulation requirements of buildings
Implementation Method 2
an insulating layer of a soil to be insulated to prevent load-independent soil settlement due to shrinkage
Data Source
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AI summary
The invention disclosed herein comprises a layer and a method for producing a layer for securing a building site, wherein the layer is a thermal insulation layer for fulfilling the thermal insulation requirements of buildings and/or an insulating layer of soil to be insulated to prevent load-independent soil settlement due to shrinkage. The layer is characterized in that it consists of municipal solid waste incineration (MSI) slag. Furthermore, a method and computer program for determining the thickness of a layer for securing a building site are disclosed, wherein the layer is an insulating layer of soil to be insulated to prevent load-independent soil settlement due to shrinkage, and in particular also a load-bearing layer to meet the requirements for foundations.Additionally, a method and computer program for determining the thickness of a layer for securing a building site is disclosed, wherein the layer is a thermal insulation layer for fulfilling thermal insulation requirements of buildings.