Translucent Resin Concrete Pumping Pipe for Low-Friction Flow
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Solution Overview
Problem
Conventional metal pipes used for concrete pumping are heavy, difficult to handle, and prone to clogging, leading to safety concerns and inefficiencies in construction sites, as they require additional materials and labor for preliminary feeding, which results in high disposal costs and potential rupture risks due to unseen clogging.
Innovation Solution
A concrete pumping pipe made of ultra-high molecular weight polyethylene with a cylindrical body, featuring a dynamic friction coefficient of 0.07 to 0.30, passing a 25 MPa hydraulic pressure resistance test, and having a contact angle of 55° or more, which is lightweight, resistant to rupture, and allows visual confirmation of internal content, reducing the need for preliminary materials and preventing concrete component separation during pumping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a steel pipe is used for concrete pumping, then pressure resistance performance is improved, but weight increases making it difficult to handle
Solution Approach 1:
The patent changes the material parameter from metal to resin (specifically polyethylene or polypropylene) while optimizing the wall thickness parameter to achieve the required pressure resistance. The resin pipe with controlled wall thickness provides sufficient strength for concrete pumping while dramatically reducing weight compared to steel pipes
Solution Approach 2:
The patent employs composite material structures, specifically using resin materials with optimized molecular weight and composition to achieve both lightweight properties and adequate pressure resistance. The use of specific resin compositions allows the pipe to withstand pumping pressures without the weight penalty of metal
2Weight of moving object
If a resin pipe is used instead of metal pipe, then weight is reduced and handling becomes easier, but pressure resistance performance deteriorates
Solution Approach 1:
The patent optimizes the wall thickness parameter of the resin pipe to achieve the required pressure resistance. By carefully controlling the wall thickness within specific ranges, the resin pipe attains sufficient strength to withstand concrete pumping pressures while maintaining its lightweight advantage
Solution Approach 2:
The patent applies different wall thicknesses at different locations of the pipe to optimize both pressure resistance and weight. The pipe structure is designed with varying local properties to provide adequate strength where needed while minimizing overall weight
3Productivity
If conventional steel pipe is used, then pumping capability is achieved, but clogging occurs requiring preliminary materials and increasing disposal costs
Solution Approach 1:
The patent changes the surface parameter of the pipe by using resin material with specific friction coefficients and surface properties. This surface modification reduces the friction between concrete and pipe wall, preventing clogging and eliminating the need for preliminary feeding materials while maintaining pumping capability
Solution Approach 2:
The patent converts the potential harm of concrete adhesion to the pipe wall into a benefit by using resin material with low friction coefficients. The surface properties of the resin pipe prevent concrete from sticking, turning what would be a clogging problem into a smooth pumping operation without preliminary materials
4Productivity
If steel pipe is used, then pumping operation can proceed, but safety concerns arise from unseen clogging and rupture risks
Solution Approach 1:
The patent uses the transparency or color characteristics of resin material to enable visual inspection of the pipe interior. Operators can observe concrete flow and detect clogging conditions by looking through the translucent or transparent resin pipe wall, allowing early intervention before rupture occurs
Solution Approach 2:
The patent converts the opacity of metal pipes (which hides internal conditions) into a benefit by using translucent resin material. This allows visual monitoring of concrete flow and clogging detection, transforming a safety risk into a preventive capability
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 solution provides a lightweight, safe, and efficient concrete pumping system with reduced material waste and disposal costs, enhanced visual recognition of internal content, and improved resistance to clogging and rupture, ensuring safer and more efficient construction operations.
Implementation Method 1
a dynamic friction coefficient of the inner surface of the cylindrical body is 0.07 to 0.30
Implementation Method 2
the cylindrical body is free of rupture and leakage in a 25 MPa hydraulic pressure resistance test
Implementation Method 3
a contact angle of the inner surface of the cylindrical body is 55° or more
Data Source
AI summary
A concrete pumping pipe comprising no metal pipe, and having a cylindrical body composed of a resin, wherein a dynamic friction coefficient of the inner surface of the cylindrical body is 0.07 to 0.30, the cylindrical body is free of rupture and leakage in a 25 MPa hydraulic pressure resistance test, and a total luminous transmittance per 2 mm-thickness test piece of the cylindrical body is 10% or more.