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Automatic test system and test method for testing surface capillary water absorption of concrete

An automatic testing system and concrete surface technology, applied in the direction of using material absorption and weighing, can solve the problems of low test sensitivity, accidental error, continuous measurement, etc., to achieve high measurement accuracy, improve sensitivity, and avoid water evaporation.

Inactive Publication Date: 2013-12-25
HARBIN INST OF TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing surface capillary water absorption test system is difficult to ensure that the effective depth of the concrete specimen immersed in water is always a small value, and the water absorption quality of the concrete specimen cannot be measured in real time, automatically and continuously, and there are Accidental error, low test sensitivity and low precision caused by manual operation etc. Provide an automatic test system and test method for concrete surface capillary water absorption

Method used

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  • Automatic test system and test method for testing surface capillary water absorption of concrete
  • Automatic test system and test method for testing surface capillary water absorption of concrete
  • Automatic test system and test method for testing surface capillary water absorption of concrete

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specific Embodiment approach 1

[0021] Specific embodiment one: a kind of concrete surface capillary water absorption automatic test system of this embodiment is made up of constant pressure water supply unit, electronic balance 2 and specimen water absorption unit, constant pressure water supply unit and specimen water absorption unit pass water outlet pipe 7, silica gel The hose 8 communicates with the water inlet pipe 9;

[0022]The constant pressure water supply unit is composed of a constant pressure water supply sealed bottle 1, a gas communication pipe 5, a balance inlet pipe 6 and a water outlet pipe 7; the electronic balance 2 is arranged at the bottom of the constant pressure water supply sealed bottle 1 and is used to measure the The weight of the pressure water supply unit; wherein, the gas communication pipe 5 and the balance air intake pipe 6 are all arranged on the upper end of the constant pressure water supply sealed bottle 1, and the end of the gas communication pipe 5 inside the constant pr...

specific Embodiment approach 2

[0028] Embodiment 2: This embodiment differs from Embodiment 1 in that: the specimen water absorption unit also includes height adjustment feet 17 and a level 18 . Others are the same as in the first embodiment.

specific Embodiment approach 3

[0029] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that three equal-height height-adjusting feet 17 are arranged outside the sample sealing chamber 3 and are located on a horizontal operating platform 19 . Others are the same as in the first or second embodiment.

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Abstract

The invention provides an automatic test system and test method for testing surface capillary water absorption of concrete, relates to a test system and a test method thereof, and aims to solve the problems that the existing test system is impracticable to ensure that the effective depth of a specimen immersed in water is always a small constant value, the water absorption mass of the specimen can not be automatically and continuously measured in real time, accidental errors caused by manual operation and the like exist, the test sensitivity is low and the precision is low. The system comprises a constant-pressure water supply unit, an electronic balance and a specimen water absorption unit. The test method comprises the following steps: 1, emptying liquid in a balanced air inlet pipe; 2, regulating height and water level of the specimen water absorption unit; and 3, acquiring mass data by using a computer. According to the invention, the effective depth of the specimen immersed in water can be ensured to be always a small constant value, real-time automatic continuous measurement can be realized, the accidental errors can be reduced, the test sensitivity is high, and the precision is high. The system and method are used in the fields of experimental study on pore structures and surface capillary water absorption of a concrete material, and physical engineering durability detection.

Description

technical field [0001] The invention relates to a test system and a test method thereof, in particular to an automatic test system and a test method for capillary water absorption of concrete surface. Background technique [0002] The durability of concrete materials is of great significance to the safety and economy of the whole life cycle of concrete structures. How to correctly evaluate and detect the durability of concrete materials is very important for the engineering application of concrete materials. The durability of concrete is closely related to the speed at which aggressive media migrate through the pores and cracks inside the material. Capillary water absorption can quantitatively describe the ease or speed of water absorption by concrete materials under capillary action, and there is a clear and strict theoretical relationship with water diffusivity and permeability. It is an important indicator for quantitatively characterizing the durability of concrete mate...

Claims

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Application Information

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IPC IPC(8): G01N5/02
Inventor 周春圣曲海涛
Owner HARBIN INST OF TECH
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