Method for determining the pressure water absorption of artificial construction sand

By measuring the water absorption rate of artificial construction sand in a pressure water absorption meter, the problem of the inability to measure the water absorption rate of artificial construction sand under pressure in existing technologies has been solved, enabling accurate control of concrete workability and improving construction production efficiency.

CN122108828APending Publication Date: 2026-05-29CHONGQING UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING UNIV
Filing Date
2026-01-15
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing technologies lack methods for measuring the water absorption rate of artificial construction sand under pressure, which makes it impossible to accurately control the changes in workability of artificial fine aggregate concrete after high-pressure pumping, thus affecting construction production efficiency.

Method used

A method for determining the pressure water absorption rate of artificial construction sand is provided. The method involves measuring the water absorption rate of fine aggregate under different pressures using a pressure water absorption meter, including steps S1 to S5, calculating the water absorption rate of fine aggregate under pressure, and performing the measurement using a universal testing machine and a pressure water absorption meter.

Benefits of technology

Accurately measuring the water absorption rate of artificial fine aggregate under pressure allows for the regulation of workability changes after high-pressure pumping of concrete, thereby improving construction efficiency. The method is simple to operate and has a wide range of applications.

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Abstract

The application discloses a kind of artificial construction sand pressure water absorption determination method, it is characterized in that, including the following steps: obtaining the technical index of measured fine aggregate sample;All measured fine aggregate sample is baked to dry state, and according to the technical index of measured fine aggregate sample, the porosity of measured fine aggregate under different pressure is determined;Calibrate the capacity of pressure bleeding instrument and determine the water output of fine aggregate after water absorption saturation in pressure bleeding instrument without applying pressure, and determine the water output of fine aggregate after water absorption saturation in pressure bleeding instrument when a certain pressure is applied;According to the technical index of measured fine aggregate sample, the capacity of pressure bleeding instrument, the water output without applying pressure after water absorption saturation and the water output when a certain pressure is applied after water absorption saturation, calculate the water absorption of fine aggregate under pressure.The application can accurately determine the pressure water absorption of various types of fine aggregate, and comprehensively evaluate the water absorption change of fine aggregate under pressure.
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