Precracking rebar concrete sample molding die and sample molding method

Abstract

The invention discloses a precracking rebar concrete sample molding die and a sample molding method. The die comprises a bottom plate, two side plates and more than two partition plates; the side plates are arranged at two sides of the bottom plate; the partition plates are inserted between the two side plates in parallel; more than one containing cavity for molding a concrete sample is defined among the bottom plate, the side plates and the partition plates; a rubber block is embedded in the middle of the partition plate at one side in the containing cavity; the same positions, close to one side of the containing cavity, of the partition plates and the rubber blocks are provided with a longitudinal reserved seam; slices of different thicknesses for precasting cracks of the concrete sample can be inserted in the reserved seams; each of the two side plates is provided with more than one detachable rebar positioning block; the rebar positioning blocks are provided with two positioning holes. According to the method, cracks are reserved in the side surfaces of the rebar concrete sample, and the die has the advantages that the structure is simple, positioning of rebars and stainless steel pipes of different diameters, changing the thickness of a rebar protection layer can be realized without the need of changing a die, and the like.

Description

technical field [0001] The invention relates to a mould, in particular to a mold for forming a concrete specimen capable of reserving side cracks and a method for forming the specimen with it. Background technique [0002] Reinforced concrete structure is the most important structural form at present, but due to the characteristics of its material itself and the use environment, the reinforced concrete structure is destroyed prematurely, loses its durability, and causes huge economic losses. At present, when the laboratory studies the durability of concrete, the corrosion state of steel bars is usually studied, and the influence of cracks on the corrosion of steel bars is usually studied. When studying the corrosion of steel bars, the effects of steel bar diameter, concrete cover thickness, and crack width are usually considered. Existing molds are only suitable for the study of the effect of a single steel bar diameter and protective layer thickness on the corrosion of ste...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art that the thin slices with cracks on the surface are not easy to fix and easy to dislocate, and to provide a simple structure that can realize the positioning of steel bars and stainless steel pipes of different diameters and change the protection of steel bars without changing the mold. A reinforced concrete forming mold capable of reserving cracks on the side of a reinforced concrete test piece with a layer thickness; a method for forming a side pre-cracked test piece with the forming mold is also provided

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