Mechanism sand concrete design method for reducing fluidity loss over time
By using superabsorbent polymers and compensating water in concrete design, the problem of fluidity loss caused by water absorption in manufactured sand was solved, achieving the effect of stable fluidity and strength maintenance.
CN117602888BActive Publication Date: 2025-11-11CHINA CONSTR EIGHT ENG DIV CORP LTD
2 Cites 1 Cited by
Patent Information
- Application Number
- CN202311589351.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-27
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2043-11-27
AI Technical Summary
Technical Problem
Manufactured sand absorbs water and admixtures in concrete, resulting in a significant loss of fluidity over time, exceeding construction standards and affecting project quality.
Method used
By employing a design method that utilizes superabsorbent polymers and compensating water, and adjusting the dosage of superabsorbent polymers and compensating water through experiments, the concrete mix proportions can be precisely controlled, thereby reducing fluidity loss.
Benefits of technology
It effectively reduces the loss of concrete fluidity over time, maintains stable concrete fluidity, avoids the impact of excessive admixture use on homogeneity, and does not weaken the strength of hardened concrete.
✦ Generated by Eureka AI based on patent content.
Abstract
The application discloses a mechanism sand concrete design method for reducing flowability loss over time, which comprises providing a first base material of concrete, compensation water and super absorbent polymer; based on the 5min spread of the mortar mixture prepared based on the first base material and the empirical water absorption of the super absorbent polymer, the estimated water absorption of the super absorbent polymer is determined through a first test; based on the estimated water absorption and the 1h spread of the second base material which is equal to the mechanism sand and replaced by natural sand, the amount of the compensation water is determined through a second test; based on the amount of the compensation water and the estimated water absorption of the super absorbent polymer, the addition amount of the super absorbent polymer in the first base material is determined; based on the addition amount of the super absorbent polymer and the amount of the compensation water, the preset mass ratio is adjusted to obtain the design ratio of the mechanism sand concrete. The application solves the problem that the water absorption of the mechanism sand in the concrete leads to high flowability loss over time of the concrete.
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