Gradient cementitious material combined vibration production method

By using a combination vibration method with a six-degree-of-freedom vibration table, cement-based material particles are driven to move in a directional manner to form a gradient structure, which solves the problem of easy erosion of cement-based materials and improves the density and mechanical properties of the materials.

CN116079861BActive Publication Date: 2026-06-09WUHAN UNIV OF TECH +1
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN UNIV OF TECH
Filing Date
2022-11-25
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing technologies make it difficult to prepare cement-based materials with gradient structures, which makes it easier for corrosive media to penetrate the interior, increasing the risk of disease and frost damage.

Method used

A six-degree-of-freedom vibration table is used for combined vibration. By combining different frequencies and accelerations, the particles in the cement-based material are driven to move in a directional manner to form a gradient structure. The orderly sedimentation and accumulation of particles are achieved by utilizing the response characteristics of the particles.

Benefits of technology

A cement-based material with a highly dense surface and a gradient distribution inside was prepared, which improved the material's density and overall physical and mechanical properties, reduced porosity and interconnected porosity, and improved its impermeability and frost resistance.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN116079861B_ABST
    Figure CN116079861B_ABST
Patent Text Reader

Abstract

The application relates to a combined vibration preparation method of a gradient cement-based material, which comprises the following steps: fixing the stirred cement mortar together with a mold in a six-degree-of-freedom vibration table, selecting six vibration frequencies as a vibration combination, that is, selecting two frequencies in a low-frequency band of 10-50 Hz, one frequency in a medium-frequency band of 50-500 Hz, and two frequencies in a high-frequency band of 500-3000 Hz in a frequency increasing mode, and finally adjusting the frequency back to the medium-frequency band to continue vibration. Correspondingly, the amplitude is 1-2 mm in the low-frequency band, the amplitude is small in the medium-frequency band to the high-frequency band, vibration acceleration is adopted to represent the amplitude, and the vibration acceleration is 5g-10g. The vibration time under each vibration frequency is 0-600s. Through the above combined vibration, the cement-based material with continuous gradient distribution is obtained, the harmful pore diameter in the bottom mortar matrix is greatly reduced, the proportion of connected pores is reduced, the compactness is greatly improved, and therefore the physical and mechanical properties of the mortar are obviously improved.
Need to check novelty before this filing date? Find Prior Art