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Concrete expansion and shrinkage test length measuring instrument and measuring method

A technology of length measurement and shrinkage test, applied in the direction of measuring device, mechanical measuring device, instrument, etc., can solve the problem of cumbersome measurement process, and achieve the effect of simple operation, ensuring consistency and accuracy, and easy control of steps.

Pending Publication Date: 2017-12-26
甘肃建科技术试验检测有限责任公司
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Problems solved by technology

These tests are to determine whether the performance of the concrete specimen meets the specification requirements by measuring the length change of the concrete specimen. The length of the piece, and the process of its determination is also relatively cumbersome

Method used

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  • Concrete expansion and shrinkage test length measuring instrument and measuring method

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] like figure 1 Described, a kind of concrete expansion, contraction test length measuring instrument, comprise standard length bar 6 and base 1, two guide rails 2 are fixed on base 1, be provided with specimen fixture 8 between guide rail 2 and the bottom of specimen fixture 8 Installed on the base 1, the specimen fixture 8 is provided with a specimen fastening device, which includes four adjustment knobs 801 arranged on both sides of the specimen fixture 8. The locator 7 and the locator 7 are fixed on the base 1. The locator 7 is a laser locator. The laser locator can provide a laser aiming line perpendicular to the base 1. The center of the concrete specimen 9 can be adjusted by rotating the adjustment knob 801. Line and laser aiming line are adjusted to coincide, both ends of the guide rail 2 are equipped with a positioning vernier 5 ...

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Abstract

The invention discloses a concrete expansion and shrinkage test length measuring instrument and a measuring method. The measuring instrument includes a standard length rod and a base, two guide rails are fixed on the base, a test piece fixture is arranged between the guide rails and the bottom of the test piece fixture is installed on the base, a test piece fastening device is arranged on the test piece fixture, a locator is arranged on the top of the test piece fixture and the locator is fixed on the base, a positioning vernier and a sliding dial gauge frame which can slide on the guide rails are installed on both ends of the guide rails, the positioning vernier is located on the inner side of the sliding dial gauge frame, and a dial gauge is arranged on the sliding dial gauge frame. The concrete expansion and shrinkage test length measuring instrument can be applied to the precise length measurement of the concrete test pieces with different specifications through replacing the test piece fixture, dedicated measuring instrument is not needed, the applicability is strong, the length of concrete test pieces for different tests and different specifications can be accurately measured by a single instrument, the standardization and unification of length measurement tests of the concrete test pieces with different specifications can be ensured, and the consistency and accuracy of measurement data are ensured.

Description

technical field [0001] The invention belongs to the technical field of building material testing equipment, and in particular relates to a concrete expansion and contraction test length measuring instrument and a measuring method. Background technique [0002] In the tests of the performance of concrete and its constituent materials, many tests need to measure the length change of the specimen, for example: the shrinkage test of concrete is an important test in determining the long-term performance and durability of concrete, the alkali activity test of sand and stone It is an important test to judge the quality of sand and stone, and the limited expansion rate test is an important test to judge the performance of concrete expansion agent. These tests are to determine whether the performance of the concrete specimen meets the specification requirements by measuring the length change of the concrete specimen. The length of the piece, and the process of its measurement is als...

Claims

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Application Information

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IPC IPC(8): G01B5/02G01N33/38
CPCG01B5/02G01N33/383
Inventor 贾彦东胡进权张学普王嘉琪刘雄骆军
Owner 甘肃建科技术试验检测有限责任公司
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