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Method for testing bump-milling resistance performance of ship lock concrete

A detection method and concrete technology, applied in the direction of testing wear resistance, material inspection products, etc., can solve the problems that it is difficult to select the concrete mix ratio of ship lock engineering, and it is difficult to objectively characterize the impact and wear of navigable ships, so as to reduce damage, Ease of operation and improved accuracy

Inactive Publication Date: 2010-06-16
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical principles and testing methods of the above-mentioned test methods are difficult to objectively characterize the impact and abrasion of navigable ships on the concrete surface of the lock engineering, which makes it difficult to select a suitable concrete mix ratio for the lock engineering

Method used

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  • Method for testing bump-milling resistance performance of ship lock concrete
  • Method for testing bump-milling resistance performance of ship lock concrete
  • Method for testing bump-milling resistance performance of ship lock concrete

Examples

Experimental program
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Effect test

Embodiment 1

[0012] The impact and wear resistance of plain concrete, polypropylene fiber concrete and steel fiber concrete are investigated by using the detection method of the present invention. The abrasion testing machine used is produced by Jiangsu Shuyang Luda Highway Instrument Factory. Its main technical parameters are: the inner diameter of the cylinder is 711.5mm, the inner length is 509.5mm, and the rotation speed of the steel cylinder is 30r / min. The mix proportions of the three groups of concrete are shown in Table 1. Three test pieces are used for each group of concrete, and the size is a cylinder with a diameter and a height of 100 mm. Among them, the cement is 32.5 grade ordinary Portland cement; the fly ash is Pizhou I grade fly ash; the sand is the sand in Luoma Lake (fineness modulus is 2.9); Stone; polypropylene fiber is produced by Jiangsu Bote Co., Ltd., with a length of 19mm; steel fiber is produced by Changzhou Wujin Southeast New Building Materials Factory, with a ...

Embodiment 2

[0022] A method for detecting the impact and wear resistance of ship lock engineering concrete, the detection steps are: the preparation of concrete test pieces for ship lock engineering: the shape of the concrete test pieces for ship lock engineering is a cylinder with the same diameter and height, and the particle size of the concrete coarse aggregate is 5 ≤d≤60mm, the diameter or height of concrete specimens is 100mm~200mm; dry the concrete specimens with standard curing for 28~90 days in an oven at 60~110℃ to constant weight and measure their initial mass; : Put steel balls and 3 to 6 test pieces as a group into the abrasion testing machine. The rotation speed of the abrasion testing machine is 30r / min to 33r / min, and the rotation time is 6 to 33min. After the rotation stops, measure the concrete The mass of the test piece is calculated to calculate the mass loss rate to obtain the impact and wear resistance of the concrete test piece used in the ship lock project. The tot...

Embodiment 3

[0024]A method for detecting the impact and wear resistance of ship lock engineering concrete, the detection steps are: the preparation of the concrete specimen for the ship lock engineering: the shape of the concrete specimen for the ship lock engineering is a cylinder with the same diameter and height, and the particle size of the concrete coarse aggregate is 50mm , the diameter of the concrete specimen is 100mm; the concrete specimen with standard curing for 28 days is dried in a 60°C oven to constant weight and its initial mass is measured; the abrasion testing machine is tested: steel balls, 3 as a group of test Put the pieces into the abrasion testing machine. The rotation rate of the abrasion testing machine is 30r / min, and the rotation time is 6. After the rotation stops, measure the quality of the concrete specimen, calculate the mass loss rate, and obtain the crashworthiness of the concrete specimen for ship lock engineering. grinding performance. The total number of...

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Abstract

The present invention relates to a detection method for the crash-wear resistance of ship-lock engineering concrete, comprising detection steps as follows: ship-lock engineering concrete test pieces are prepared; each ship-lock engineering concrete test piece is in the shape of a cylinder with the diameter equal to the height; the particle diameter of concrete coarse aggregate is d which is more than or equal to 5 mm and less than 60 mm; the diameter or height of each concrete test piece is 100-200 mm; the concrete test pieces after the standard curing for 28-90 days are dried to constant weight in an oven at 60-110 DEG C and then the initial weight of the concrete test piece is measured; an abrasion testing machine is detected; a steel ball and the concrete test pieces in groups of threeto six are put into the abrasion testing machine; the gyration rate of the abrasion testing machine is 30-33 r / min, and the gyration time of the abrasion testing machine is 6-33 min; after gyration stops, the weight of the concrete test pieces are measured and the weight loss rate is calculated, so as to obtain the crash-wear resistance of ship-lock engineering concrete test pieces. The method canovercome the deficiencies existing in the prior detection art and reasonably simulate the crash-wear action received by ship-lock engineering concrete. Moreover, the method is simple to operate, short in test period and low in test cost.

Description

1. Technical field [0001] The invention belongs to the technical field of building material detection, and in particular relates to a detection method suitable for the impact and wear resistance of concrete used in ship lock engineering. 2. Background technology [0002] Existing technology: the concrete of ship lock engineering, especially the concrete of the lock chamber wall, is often subjected to the impact and friction of various navigable ships during the long-term service process, thus causing abrasion on the concrete surface, exposure of aggregates and cracking, which seriously affects The appearance quality, safety and durability of the lock project. In order to study and improve the impact and wear resistance of ship lock engineering concrete, it is necessary to adopt a scientific and applicable detection method to objectively characterize the impact and abrasion of ship lock engineering concrete. In the current concrete inspection and test regulations, there is n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/56G01N33/38
Inventor 秦鸿根李思胜耿飞冯长伟
Owner SOUTHEAST UNIV
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