A permeable concrete specimen tamping instrument and method

By designing a permeable concrete specimen tamping and compaction instrument, the shortcomings of permeable concrete specimen testing were solved, enabling effective testing of permeability coefficient and compressive strength, and supporting the needs of actual engineering construction.

CN120489687BActive Publication Date: 2026-06-30SINOHYRDO ENG BUREAU 3 CO LTD +1
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Patent Information

Application Number
CN202510830818.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-06-20
Publication Date
2026-06-30
Estimated Expiration
2045-06-20

AI Technical Summary

Technical Problem

The lack of appropriate instruments and methods for compacting permeable concrete specimens makes it impossible to effectively test the permeability coefficient and compressive strength, which affects actual engineering construction.

Method used

Design a permeable concrete specimen tamping instrument, including a rotating bearing mechanism, a hammering mechanism, and an tamping mechanism. The instrument enables the production and testing of permeable concrete specimens through hammering and tamping, and tests the permeability coefficient and compressive strength under different tamping times, hammer weight, hammer height, and hammering times.

Benefits of technology

It enables the rational fabrication and testing of permeable concrete specimens, and provides a reference for selecting the number of tamping operations, the weight of the hammer, and the number of blows based on actual engineering needs, thus assisting in the construction of permeable concrete.

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Abstract

This invention discloses an instrument and method for compacting permeable concrete specimens. The instrument includes a base, a rotating impact mechanism, a specimen preparation mold, a gantry frame, and a lifting and adjusting mechanism. The rotating impact mechanism includes a bearing block and a rotating component. The specimen preparation mold is installed on top of the bearing block. The hammering mechanism includes a guide rod and a heavy hammer. The compaction mechanism includes a connecting block and a concrete tamping rod. The lifting and adjusting mechanism can clamp the heavy hammer or the connecting block. The method includes the following steps: 1. Installing the specimen preparation mold; 2. Installing the concrete tamping rod on the lifting and adjusting mechanism; 3. Compacting the permeable concrete specimen; 4. Installing the hammering mechanism on the lifting and adjusting mechanism; 5. Compacting the permeable concrete specimen; 6. Testing the permeable concrete specimen. This invention is reasonably designed and can obtain data on the preparation of permeable concrete specimens and the testing of their permeability coefficient and compressive strength under different compaction times, heavy hammer weights, heavy hammer heights, and hammering times.
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