Prefabricated Concrete Slab Height Adjustment and Full-Surface Grouting
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Solution Overview
Problem
Existing methods for repairing or maintaining traffic areas with prefabricated concrete slabs often fail to achieve complete full-surface filling of pressing material between the slabs and the underground mounting surface, and positional height adjustment is not always feasible, leading to cavities that compromise the long-term functionality of the road traffic area.
Innovation Solution
A method involving prefabricated concrete plates with integrated mounting elements that have filling channels for pressing material and adjustment elements for height adjustment, using a mixture of organic polymer and inorganic silicon compounds as the pressing material, which is injected through channels to ensure complete filling and curing without foaming, allowing for precise height adjustment and full-surface coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If prefabricated concrete slabs are used for repairing or maintaining traffic areas, then construction time is reduced and ease of operation is improved, but complete full-surface filling of pressing material between slabs and mounting surface cannot be achieved, leading to cavities and reduced reliability
Solution Approach 1:
The mounting element is segmented into multiple functional components: a filling channel for injecting pressing material, an adjusting element for height control, and a mounting body for securing the slab. This segmentation allows each component to perform its specific function effectively, ensuring both ease of operation and complete filling without cavities.
Solution Approach 2:
The pressing material acts as an intermediary substance that fills the gap between the prefabricated concrete slab and the mounting surface. By injecting this material through the filling channel, complete full-surface filling is achieved, eliminating cavities and ensuring reliable load transfer while maintaining the ease of using prefabricated slabs.
2Reliability
If pressing material is compressed into the space between prefabricated concrete plate and mounting surface with high energetic effort, then filling completeness is improved, but energy consumption increases and positional height adjustment becomes difficult
Solution Approach 1:
The filling channel is designed to inject pressing material using pneumatic or hydraulic pressure, enabling complete filling of the gap between the slab and mounting surface without requiring high energetic effort. This eliminates cavities while avoiding excessive energy consumption and preserving the ability to adjust height.
Solution Approach 2:
The pressing material undergoes parameter changes during injection, transitioning from a pumpable liquid or semi-liquid state that easily fills the gap to a hardened state that provides stable support. This parameter change allows complete filling with minimal energy while maintaining adjustability.
3Adaptability or versatility
If positional height adjustment of prefabricated concrete slabs is performed, then adaptability is improved, but complete filling of the space between slab and mounting surface becomes problematic
Solution Approach 1:
The filling channel and pressing material injection are performed as a preliminary action before final height adjustment and hardening. This sequence ensures complete filling is achieved first, then height can be precisely adjusted using the adjusting element without compromising filling completeness.
Solution Approach 2:
The system is designed to be dynamic, allowing height adjustment through the adjusting element (such as a threaded rod or hydraulic jack) after the pressing material is injected but before it fully hardens. This dynamic capability enables both complete filling and positional adjustment to be achieved.
4Productivity
If large-scale prefabricated concrete slabs are used, then productivity is improved, but complete filling and precise height adjustment become more difficult
Solution Approach 1:
The mounting element is segmented into a filling channel system and an adjusting element system. The filling channel ensures complete filling even in large-scale slabs, while the adjusting element (such as a threaded rod with fine pitch) enables precise height adjustment, maintaining manufacturing precision despite increased slab size and productivity.
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 enables a complete and long-lasting road traffic area by ensuring full-surface filling and precise height adjustment, reducing energetic effort and preventing cavities, while providing a stable and durable surface with high weather resistance and low maintenance costs.
Implementation Method 1
a mixture is a mixture from at least two components is used, wherein a component is an organic polymer and a component is an inorganic silicon compound
Implementation Method 2
which is injected through channels to ensure complete filling and curing without foaming
Data Source
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AI summary
Method for constructing a road surface (1), wherein at least one precast concrete slab (2) is placed on a mounting base (3). A plurality of mounting elements (4) are embedded in the precast concrete slab, each element having, on the one hand, a filling channel (5) for injecting a grouting material (6) and, on the other hand, an adjustment element (7) for adjusting the height of the precast concrete slab. After the precast concrete slab has been placed, the height adjustment is carried out using the adjustment elements. The grouting material is injected through the filling channels into the space (8) between the precast concrete slab and the mounting base. The grouting material is a mixture of at least two components, one component being an organic polymer and the other an inorganic silicon compound.