Asphalt Pavement Repair Binder for Small-Scale Patching
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Solution Overview
Problem
Small-scale asphalt repairs using a cooker vehicle result in significant waste materials and increased costs due to the need for producing guss asphalt mixture in excess of the required amount, as the cooker vehicle capacity is typically half a ton or more.
Innovation Solution
A method involving spreading aggregates, mixing a binder containing asphalt and a lubricative solidification material with an alkaline additive, pouring the mixture onto the spread aggregate, and curing it to form a paved body, using single-sized crushed stone and specific ratios of binder to aggregate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a cooker vehicle is used for small-scale asphalt repairs, then the repair can be performed with standard equipment, but a large amount of waste materials is produced and repair costs increase
Solution Approach 1:
The invention divides the asphalt repair process into two independent parts: (1) preparing aggregate in the required amount only, and (2) preparing binder mixture in the required amount only. This segmentation eliminates the need to produce excess guss asphalt mixture in a cooker vehicle, allowing small-scale repairs to be performed without generating waste from overproduction.
Solution Approach 2:
The invention extracts the binder component from the traditional guss asphalt mixture and prepares it separately as a binder mixture (asphalt + lubricative solidification material + alkaline additive). This extraction allows the binder to be prepared in precise amounts needed for the repair, eliminating waste from producing excess mixture in the cooker vehicle.
2Ease of operation
If a cooker vehicle is used for small-scale asphalt repairs, then the repair can be performed with standard equipment, but repair costs increase
Solution Approach 1:
The invention segments the material preparation into separate aggregate and binder mixture components, allowing each to be prepared in the exact quantity needed for the specific repair scale. This eliminates the minimum production quantity constraint of cooker vehicles (half load capacity or about 4 tons), enabling cost-effective small-scale repairs with material quantities matching actual needs.
Solution Approach 2:
The invention changes the preparation method parameters from high-temperature cooker vehicle mixing to ambient temperature binder mixture preparation. This parameter change allows flexible scaling of material quantities from small amounts (10-50 parts binder per 100 parts aggregate) without the minimum quantity constraints of industrial equipment, reducing material costs for small repairs.
3Reliability
If guss asphalt mixture is produced in a cooker vehicle, then high watertightness and flexibility are achieved, but excess mixture must be produced due to stirring mechanism requirements
Solution Approach 1:
The invention extracts the binder component from the traditional guss asphalt mixture and prepares it separately as a binder mixture. This extracted binder mixture maintains the essential binding and waterproofing functions while allowing precise quantity control independent of aggregate amount, eliminating the need to produce excess mixture to meet cooker vehicle minimum capacity requirements.
Solution Approach 2:
The invention creates a composite binder mixture system combining asphalt, lubricative solidification material, and alkaline additive. This composite material provides the necessary binding properties and flexibility for reliable asphalt repair while enabling flexible scaling of production quantity to match actual repair needs without waste.
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 method allows for precise material usage based on repair scale, reducing waste and costs while enhancing adhesiveness and watertightness of the repaired asphalt pavement.
Implementation Method 1
a binder containing an asphalt and a lubricative solidification material
Implementation Method 2
adding and mixing an alkaline additive to and with a binder
Data Source
AI summary
Provided is a method for repairing asphalt pavement comprising: a spreading step of spreading an aggregate 20 over a floor slab 1; a mixing step of obtaining a binder mixture 30 by adding and mixing an alkaline additive to and with a binder containing an asphalt and a lubricative solidification material; a filling step of pouring the binder mixture 30 into a place where the aggregate 20 is spread; and a curing step of curing the aggregate 20 and the binder mixture 30 to obtain a paved body.