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Concrete early-age crack resistance testing device capable of directly determining cracking position

A technology of crack resistance and testing device, applied in the field of concrete construction, can solve the problems of measuring the crack resistance of early-age concrete, unsuitable, unclear cracking position, etc.

Inactive Publication Date: 2015-03-25
HOHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the field of civil engineering, there are many test devices for the crack resistance of early-age concrete, but all of them need to measure the crack resistance of concrete by measuring strain, and the location of the crack is not clear, so it is not suitable for measuring the crack resistance of early-age concrete on the construction site.

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  • Concrete early-age crack resistance testing device capable of directly determining cracking position
  • Concrete early-age crack resistance testing device capable of directly determining cracking position
  • Concrete early-age crack resistance testing device capable of directly determining cracking position

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Embodiment Construction

[0018] Below in conjunction with accompanying drawing, the present invention is described in detail: as figure 1 , figure 2 As shown, a test device for early-age crack resistance of concrete that can directly determine the crack position, the test device includes an outer formwork 1, an inner steel ring 2, a stepped steel bottom plate 3, bolts 4, connecting plates 5, and handles 6 . The outer formwork 1 is designed as two semicircles, and the four connecting plates 5 are welded to the outer formwork 1 by fillet welding. The four connecting plates 5 are all drilled with threaded holes, and the connecting plates 5 are connected by bolts 4. The entire outer formwork 1 can be fixed as a whole. Four handles 6 are welded at four quarter points on the outside of the stepped steel base plate 3, which is convenient for carrying. Before the test, place the polygonal inner steel ring 2 on the stepped steel bottom plate 3, preferably a square inner steel ring, and fix it by means of a...

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Abstract

The invention discloses a concrete early-age crack resistance testing device capable of directly determining a cracking position. The device comprises a bottom plate, an inner steel ring and an outer template, wherein the bottom plate is a stepped bottom plate; the inner steel ring and the outer template are arranged on the stepped bottom plate; and the inner steel ring is polygonal. The four corners of the square inner steel ring in the testing device are expected cracking positions of a concrete ring, and the crack resistance of concrete can be measured without the attachment of a strain gauge. The device is simple, convenient to disassemble and applicable to the measurement of early-age crack resistance of the concrete on a construction site.

Description

technical field [0001] The invention relates to a device for testing the anti-cracking performance of concrete at an early age, which can directly determine the cracking position, and belongs to the field of concrete construction. Background technique [0002] In the field of civil engineering, there are many test devices for the crack resistance of early-age concrete, but all of them need to measure the crack resistance of concrete by measuring strain, and the cracking location is not clear, so it is not suitable for measuring the crack resistance of early-age concrete at the construction site. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a test device for directly determining the cracking position of concrete in view of the above-mentioned deficiencies in the prior art. [0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: [0005] A con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/38
Inventor 沈德建张中流段小芳李明崔正华殷粉芳江倩艳成大宝柯存龙殷有军方艺
Owner HOHAI UNIV