A mold and method for preparing a fiber mesh reinforced ecc tensile specimen

Through innovation in mold design and preparation methods, the problems of fiber mesh displacement and relaxation in ECC tensile specimens were solved, achieving stability of specimen quality and accuracy of test data, while reducing energy consumption and carbon emissions.

CN122409302APending Publication Date: 2026-07-17中国建设基础设施有限公司 +3
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
中国建设基础设施有限公司
Filing Date
2026-05-12
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, fiber meshes are prone to shifting, loosening, and wrinkling in ECC tensile specimens, leading to unstable specimen quality and affecting the accuracy of tensile performance testing.

Method used

By employing specially designed molds and preparation methods, including the use of a sunken step structure in conjunction with a pressure plate, a layered vibration process, and solar-assisted curing, the precise positioning and tension of the fiber mesh in the thickness direction are ensured. Combined with a bio-based biodegradable release agent, a low-carbon preparation system is formed throughout the entire process.

Benefits of technology

It achieves precise positioning and stable tension of fiber mesh, improves the accuracy and repeatability of tensile test data, and reduces energy consumption and carbon emissions.

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Abstract

The application discloses a fiber grid reinforced ECC tensile specimen preparation mold and method. The mold comprises a bottom plate, two L-shaped frames and two pressing plates. The method comprises the following steps: pouring ECC slurry into a dumbbell-shaped pouring frame body to be flush with the lower step surface to form a lower ECC base; laying a fiber grid on the upper surface of the lower ECC base and the lower step, installing a pressing plate and applying tension to the fiber grid; continuing to pour ECC slurry to fill the inner cavity of the frame body to form an upper ECC base; and removing the mold after curing to obtain a specimen. The application realizes accurate positioning and mechanical tensioning of the fiber grid in the thickness direction through cooperation of the lower step and the pressing plate, the grid is centered, the deviation is controlled within ±0.1 mm, the tensioning state is stable during the whole pouring, vibrating and initial setting process, local stress concentration caused by grid eccentricity is effectively avoided, and tensile test data can truly reflect the actual performance of the material.
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