Fibre Binder Composition for Demolition Site Dust Control
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Solution Overview
Problem
Existing fibre binder compositions used to reduce airborne particles during building demolition, such as asbestos and mineral wool fibres, lose stickiness and evaporate over time, failing to effectively retain fibres and pose health risks to workers.
Innovation Solution
A fibre binder composition comprising 70-90% sticky and non-toxic substance, 1-10% surfactant, and 0.01-5% traceable dye, with 5-15% stickiness enhancing substances like Acetic acid ethenyl ester or polyvinyl pyrrolidone, applied via low-pressure spraying to create a diffusion-open, long-lasting, and traceable surface binding solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If known wetting compositions are sprayed onto the building structure to bind fibres and dust, then the amount of airborne particles is reduced, but the composition loses stickiness and evaporates over time
Solution Approach 1:
The invention uses a composite liquid composition combining multiple substances: a sticky base substance (70-90 wt%), surfactant (1-10 wt%), and stickiness-enhancing substance (5-15 wt%). This composite formulation maintains stickiness over extended periods while preserving fibre binding effectiveness, resolving the contradiction between initial effectiveness and long-term durability.
Solution Approach 2:
The invention modifies the physical and chemical parameters of the wetting composition by adjusting the concentration and type of sticky substances and stickiness-enhancing agents. This parameter optimization ensures the composition maintains adequate stickiness and binding capacity over time, preventing evaporation-related degradation while sustaining fibre retention.
2Reliability
If known wetting compositions are applied to bind fibres, then airborne dust and fibres are reduced, but the composition cannot be easily identified to what extent it is present on the building structure
Solution Approach 1:
The invention incorporates a traceable dye element substance (0.01-5 wt%) that provides visual identification of the composition's presence and penetration depth on the building structure. This allows workers to easily detect and measure the extent of application, ensuring adequate coverage while maintaining fibre binding effectiveness.
3Reliability
If the wetting composition is applied to bind fibres and dust, then particle retention is improved, but the liquid may evaporate over time reducing its effectiveness
Solution Approach 1:
The invention formulates a composition with optimized sticky substance content (70-90 wt%) and stickiness-enhancing additives that maintains continuous particle retention capability over extended periods. This continuous effective action prevents the liquid from evaporating completely while sustaining fibre and dust binding throughout the construction site's operational duration.
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 composition significantly reduces airborne fibre concentrations by up to 97% and maintains stickiness for an extended period, ensuring worker safety and site security during and after demolition, with the traceable dye allowing visual confirmation of application and expiration.
Implementation Method 1
a portion of surfactant for facilitating easy mixing with water
Implementation Method 2
a portion of sticky and mixable, non-toxic substance... a portion of a stickiness enhancing substance... retains lose fibres and other dust particles
Implementation Method 3
The composition when applied is diffusion open so that moisture in the building structure can escape
Data Source
AI summary
A composition is for retaining fibres and other particles on a building site to reduce the amount of airborne particles, such as asbestos or mineral wool fibres generated during demolition of a building structure. The composition includes a portion of sticky and mixable, non-toxic substance in the range of 70-90 wt-%, a portion of surfactant for facilitating easy mixing with water, preferably in the range of 1-10 wt-%, a traceable dye element substance, preferably in the portion of 0.01-5 wt-%, and the composition further includes a portion of a stickiness enhancing substance, preferably in the range of 5-15 wt-%.