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Method for testing flexural-tensile strength of concrete

A bending and tensile strength and testing method technology, which is applied in the direction of applying a stable bending force to test the strength of materials and the preparation of test samples, can solve the problems of inaccurate test methods, and achieve reliable repair quality, simple repair, bending and pulling Intensity accurate and reliable effect

Inactive Publication Date: 2011-09-14
ANHUI & HUAI RIVER WATER RESOURCES RES INST
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  • Description
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for testing the bending and tensile strength of concrete to solve the inaccurate problem of existing testing methods

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  • Method for testing flexural-tensile strength of concrete
  • Method for testing flexural-tensile strength of concrete
  • Method for testing flexural-tensile strength of concrete

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Embodiment Construction

[0019] The method for testing the flexural strength of concrete includes the following steps:

[0020] (1), see figure 1 , figure 2 , install three sets of L-shaped anchor bars symmetrically on one set of opposite side walls of the square ring-shaped wooden mold, and two sets of L-shaped anchor bars are symmetrically installed on the other set of opposite side walls, and the wooden mold 1 is fixed on the On the pavement base 1, the anchorage length is 80mm; among them, the planar size of the inner cavity of the wooden mold 2 is set to 150mm×550mm, and the height is 150mm. Choose hot-rolled ribbed steel bars with a diameter of 12mm, the length of the horizontal part is 200mm, and the length of the vertical part is the anchorage length plus the height of one half of the wooden mold;

[0021] (2) Concrete is poured on the pavement base 1. The pouring height of the concrete is the same as that of the wooden mold 2. Before the final setting of the concrete, screw the eye nails i...

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Abstract

The invention discloses a method for testing flexural-tensile strength of concrete, comprising the following steps of: taking concrete completely consistent with a pouring pavement in the pavement construction field; and manufacturing the concrete into concrete blocks for a bending resistance experiment by adopting a molding process according to curing conditions. The experiment result is accurate and reliable without conversion through formulas; in addition, a pit formed after the concrete is taken out is simple, easy and rapid to repair with reliable repairing quality, and cost is smaller than that of core drilling in the site; meanwhile, compared with repair after core drilling, the repair work in the method disclosed by the invention is convenient, and the repairing quality can be ensured.

Description

[0001] technical field [0002] The invention relates to a method for detecting the mechanical properties of concrete, in particular to a method for testing the bending and tensile strength of concrete. Background technique [0003] In the quality control of highway cement concrete pavement, the strength of surface concrete is a key index to determine the bearing capacity and service life of the surface structure or determine the required thickness of the surface. The pavement strength is controlled by the two indicators of pavement cement concrete flexural strength and splitting strength. During the construction process, a small beam specimen of 150 mm × 150 mm × 550 mm is generally made, and the standard maintenance is 28 days to obtain the bending and tensile strength index, which is used as the main basis for judging whether the pavement strength is qualified; when the pavement is formed, due to the small beam The size of the test piece is large, it is difficult to form...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/20G01N1/28
Inventor 邰洪生
Owner ANHUI & HUAI RIVER WATER RESOURCES RES INST
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