Asphalt Compaction Monitoring via Real-Time Density Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for laying down and compacting asphalt layers are inefficient and unsatisfactory due to the inability to rapidly react to changes in actual compaction levels, leading to suboptimal final degrees of compaction and increased energy waste or reduced load-bearing capacity.
Innovation Solution
A system and method utilizing a material density module to continuously monitor and adjust compaction power in real-time, ensuring the desired final degree of compaction is achieved by providing actual compaction data to compacting devices, optimizing road paver operations, and adjusting asphalt composition as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the actual degree of compaction is determined by the compacting device itself at the position to be compacted (as disclosed in EP 0 698 152 B1), then the compaction power can be adjusted with a view to the desired final degree of compaction, but it is scarcely possible to react with sufficient rapidity to unavoidable changes in the actual degree of compaction
Solution Approach 1:
The patent applies preliminary action by determining the actual degree of compaction in advance at the laying machine before the compacting device arrives at the position. This allows the compacting device to receive and process compaction data beforehand, enabling rapid response and appropriate adjustment of compaction power without delay when reaching the positioning.
2Manufacturing precision
If personnel optimize operational parameters of the road paver and/or screed according to experience and inspection (as is customary in practice), then adjustments can be made based on observed conditions, but this approach is time-consuming and the result is often unsatisfactory and in need of correction
Solution Approach 1:
The patent implements feedback by continuously determining the actual degree of compaction at the laying machine and communicating this data to the compacting device and road paver. This real-time feedback enables automatic or guided adjustments of operational parameters without relying on personnel experience or trial-and-error methods, thereby achieving uniform compaction more quickly and accurately.
3Strength
If the road paver produces high compaction power to ensure adequate compaction, then the load-bearing capacity of the asphalt layer is improved, but excessive compaction power results in waste of energy and potential damage to the asphalt layer
Solution Approach 1:
The patent applies dynamics by enabling the compacting device to dynamically adjust its compaction power based on real-time actual compaction data received from the laying machine. The compacting device can adapt its compaction intensity to the specific conditions at each position, applying only the necessary compaction power required to achieve the desired final degree of compaction, thereby avoiding both insufficient and excessive compaction.
4Reliability
If multiple passages are used by the compacting device to achieve adequate compaction, then the final degree of compaction is improved, but the productivity of the asphalt laying process is reduced
Solution Approach 1:
The patent applies preliminary action by determining the actual degree of compaction in advance at the laying machine and communicating this information to the compacting device. This allows the compacting device to plan its passages efficiently, potentially reducing the number of passes required by applying appropriate compaction power from the beginning, thereby maintaining high productivity while ensuring adequate final compaction.
Data Source
AI summary
In a system for laying down an asphalt layer made of asphalt material, and having a road paver having a screed with compacting tools, a compacting device and a mixer, an electronic material density module is provided in or for the road paver. The electronic material density module obtains data during the laying process regarding at least the actual degree of compaction of the asphalt layer produced in the area of at least one compacting tool and evaluates and/or documents these data at least for operational optimisation and/or operational monitoring of the road paver and/or compacting device and/or mixer. The data obtained is communicated to the compacting device that produces the final degree of compaction of the asphalt layer based on the data and on the actual degree of compaction determined at the screed.