Test equipment and test method for testing lateral deformation of concrete mixture indoors

Abstract

The invention discloses test equipment and a test method for testing the lateral deformation of a concrete mixture indoors. The test equipment comprises a box, a positioning plate, a horizontal scaleand vertical scales; the box is mainly composed of a bottom plate, a left side wall, a right side wall, a front rotating plate and a rear rotating plate; a leveling plastic steel spacer is arranged atthe bottom of the bottom plate, and the leveling plastic steel spacer is provided with horizontal bubbles; the positioning plate is provided with a round hole at one end, a semicircular opening at the other end, and a hollow groove in the middle; the horizontal scale is defined to slide reciprocally in the hollow groove of the positioning plate through a cylindrical bolt; and four vertical scalesare provided and mounted at four corners of the box respectively. The test equipment and the test method are used for simulating the liquefaction characteristic of road sliding mold construction process concrete vibrated at a high frequency and the lateral deformation when the support of a side wall template is lost after vibration, fill the blank of evaluating the formwork erecting characteristic of the road sliding mold concrete by using only the slump consistency index of the concrete in the industry, and greatly facilitate the construction, research and test.

Description

technical field [0001] The invention belongs to the technical field of civil engineering and construction, and in particular relates to a test device and test method for indoor testing of the lateral deformation of concrete mixture, which is used to simulate and evaluate the loss of side wall support of slip-form concrete for roads when it is compacted by high-frequency vibration Under certain conditions, the vertical formwork performance of the concrete mixture. Background technique [0002] To fill the gap in the industry in evaluating and testing the characteristics of slipform concrete mixtures for road use [0003] At present, there is no equipment and method for testing and evaluating the stability of pavement concrete mixtures in our country. The cement concrete pavement of high-grade highways in my country mostly adopts the slip-form construction technology, which requires the concrete to have a small slump and a good lateral deformation, that is, the "climatic char...

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Problems solved by technology

[0004] Generally speaking, the corners of concrete may collapse, and the length and width may change. The main reason is that the water in the concrete material will be continuously consumed during the hydration reaction of the concrete, so it will shrink. Cement concrete materials After mixing, it will be in a plastic state and has a certain degree of fluidity. Under the influence of its own weight, the corners of the concrete may collapse, which not only increases the workload of manual edge finishing, but also increases the number of manual surface finishing. The flatness of the artificial surface at the edge of the paved cement concrete pavement is also worse, which affects the stability and durability of driving on the cement concrete pavement

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