Cold-Installed Bitumen Paving Bed with Polymer Additive
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Solution Overview
Problem
Existing soil cover constructions in road and road construction face challenges such as deformation-related damage and water impermeability in cement-bound methods, and require complex heating processes in traditional hot installation methods.
Innovation Solution
A soil cover using a mixture of aggregate, polycarboxylate ether polymer-based additive, and bitumen binder, processed in a cold installation method, where the aggregate is mixed with the additive first and then combined with bitumen, creating a bitumen-bound paving bed that allows for elastic deformation and reduced water penetration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If hot installation method is used to process bitumen binder, then processable fluidity is achieved, but complex heating measures and high energy consumption are required
Solution Approach 1:
The patent changes the temperature parameter from high (hot installation) to low (cold installation) by introducing a polymer additive that modifies the bitumen binder's properties, enabling processability without heating
Solution Approach 2:
A polymer additive serves as an intermediary substance that facilitates the mixing and processing of bitumen binder at low temperatures, replacing the need for thermal energy input
2Object-affected harmful factors
If cement-bound construction method is used, then water impermeability is achieved, but deformation-related damage and stress cracks occur
Solution Approach 1:
The patent uses a composite material system combining bitumen binder with polymer additive and aggregate, creating a flexible pavement structure that resists both water penetration and deformation damage simultaneously
Solution Approach 2:
The patent changes the material composition from cement-based to bitumen-polymer-based, fundamentally altering the mechanical properties to achieve both impermeability and flexibility
3Adaptability or versatility
If unbound construction method is used, then elastic deformation and water permeability are achieved, but deformation-related damage risk increases
Solution Approach 1:
The bitumen-polymer-aggregate composite provides both elastic deformation capability and damage resistance through its viscoelastic properties and cohesive bonding
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
This solution eliminates the need for complex heating, reduces stress cracks, and maintains water permeability, expanding application possibilities while providing a durable and elastic pavement system resistant to frost damage.
Implementation Method 1
a paving bed (20) consisting of a mixture of aggregate (1) with an additive (2) and a binding agent (bitumen) (3)
Implementation Method 2
A mixture of a polymer with quartz sand is used as an additive. The polymer is a polymer based on polycarboxylate ether
Implementation Method 3
The areas between the shaped stones, i.e. the so-called joints, are filled with a joint material. This overall construction reacts to static or dynamic loads with elastic deformation. Temperature stresses are reduced by unhindered deformation
Implementation Method 4
In principle, the paving surface remains permeable to water
Data Source
AI summary
The invention relates to a ground covering, and to a method for the production thereof, in particular for use by motor vehicle traffic, comprising a paving made of prefabricated molded bricks made of natural or synthetic material, in particular of concrete paving stones or concrete paving slabs, which are laid on a paving bed. The paving bed consists of a mixture of aggregate with a bitumen emulsion, and the processing of the mixture takes place in cold application.