Pipe element or tank element and corresponding manufacturing method
By introducing a high specific surface area additive into the inner layer of the cementitious adhesive to form a closed inner layer, the problem of trace metal element migration in the cementitious adhesive is solved, thereby improving the safety of drinking water.
CN121079535APending Publication Date: 2025-12-05SAINT GOBAIN PIPELINE SYST
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Patent Information
- Application Number
- CN202480031408.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-05-10
- Filing Date
- 2024-05-10
- Publication Date
- 2025-12-05
AI Technical Summary
Technical Problem
Existing cement-based adhesives cannot effectively control the migration of trace metal elements when in contact with drinking water, violating relevant regulations.
Method used
An additive with a Blaine surface area at least twice that of the cementitious adhesive is introduced into the inner end layer, making it the main component, and forming a closed and continuous third layer in the inner layer to capture unwanted substances and ion migration.
Benefits of technology
It significantly reduces the migration of trace metal elements such as aluminum, vanadium, and antimony, lowers the risk of toxicity in water, and meets regulatory requirements.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to a pipe or tank element (10) comprising: a first layer (20) defining an inner side and an outer side, the first layer being made of a cement mortar comprising a filler (26) and a cementitious binder; and an end inner layer having a free inner surface arranged on the inner side of the first layer (20). The end inner layer contains an additive having a Blaine specific surface area that is at least twice the Blaine specific surface area of the cement, the additive being a main component of the end inner layer by volume.
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