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Direct drawing device and direct drawing method for detecting compressive strength of concrete

A compressive strength and concrete technology, which is applied in the direction of applying stable tension/pressure to test the strength of materials, can solve the problems of surface damage of the tested concrete and lack of detection methods, and achieves low test cost, small damage surface, and detection accuracy. high effect

Active Publication Date: 2010-06-30
LANGFANG CITY SUNSHINE CONSTR QUALITY INSPECTION CO LTD
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AI Technical Summary

Problems solved by technology

[0005] The purpose of this utility model is to provide a kind of direct-drawing device and direct-drawing method for detecting the compressive strength of concrete, to solve the lack of accuracy of the existing detection method for compressive strength of concrete, or to form a large surface of the tested concrete during detection. damage problem

Method used

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  • Direct drawing device and direct drawing method for detecting compressive strength of concrete
  • Direct drawing device and direct drawing method for detecting compressive strength of concrete
  • Direct drawing device and direct drawing method for detecting compressive strength of concrete

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Embodiment Construction

[0046] Examples see figure 1 , figure 2 Shown, the working process of the present invention is as follows:

[0047] 1. The standard part is a cylindrical steel straight-drawing standard part 1, and there is a connecting head 2 in the center of the outer bottom of the cylinder, and the connecting head is connected to the drawing instrument.

[0048] 2. The outer diameter of the steel straight drawing standard part 1 is 48mm, the inner diameter is 45mm, the cylinder height is 22mm, and the cylinder bottom thickness is 2mm.

[0049] 3. The diameter of the connector 2 of the steel straight pull standard part 1 is 15 mm, and the length of the connector is 15 mm.

[0050] 4. The drawing system is composed of a tension sensor, a hydraulic drawing instrument and a load gauge.

[0051] 5. The detection steps are as follows:

[0052] Step 1) Select a measured plane on the measured concrete matrix 6 .

[0053] Step 2) Use a hollow water drill with an inner diameter of not less than...

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Abstract

The invention relates to a direct drawing device and a direct drawing method for detecting compressive strength of concrete, and the direct drawing device comprises a standard part which is bonded with a detected concrete member and a drawing instrument connected with the standard part. The standard part is a cylindrical steel direct drawing standard part, a connecting head is arranged at the center of the cylinder bottom on the outer side of a cylinder, and the connecting head is connected with the drawing instrument. A drawing system consists of a tension sensor, the hydraulic drawing instrument and a load meter. When in use, a bonding agent is used for bonding the cylinder bottom of the cylinder of the steel direct drawing standard part and the inner wall of the cylinder on the detected concrete, the steel standard part is connected with the connecting head, the drawing system is started, and the tension value when the concrete is damaged is recorded, thereby calculating the strength of the concrete. The failure surface of the detected concrete caused by the device is very small and the detection precision is high.

Description

technical field [0001] The invention relates to a strength detection device and a detection method, in particular to a detection device and a detection method for concrete compressive strength. Background technique [0002] Existing methods for detecting the compressive strength of concrete include core drilling method, rebound method, ultrasonic rebound comprehensive method and adhesive drawing method. The adhesive drawing method is also called anchorage embedded drawing method or pull-out method. The anchor embedded drawing method is divided into two types: pre-embedded drawing method and post-installed drawing method. [0003] Adhesive drawing method: (1) First use a thin-walled drilling machine (water cooling) to vertically drill a small hole with a diameter of about 25mm and a depth of about 40mm on the concrete surface. (2) Adhesive drawing parts. After the hole wall is dry, apply epoxy resin adhesive to the periphery of the hole wall and the side of the drawn part r...

Claims

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Application Information

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IPC IPC(8): G01N3/08G01N3/10
Inventor 邱平张荣成郝克耕韩春雷
Owner LANGFANG CITY SUNSHINE CONSTR QUALITY INSPECTION CO LTD
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