Asphalt ductility test mode convenient to mount and dismount, and manufacturing method of test sample

Abstract

The invention discloses an asphalt ductility test mode convenient to mount and dismount. The asphalt ductility test mode comprises a first end mode, a second end mode, a first side mode, a second sidemode, a baseboard and a roof; the first end mode, the second end mode, the first side mode, the second side mode, the baseboard and the roof form an asphalt mold cavity in an enclosure manner; the first side mode and the roof are integrally formed, the side mode and the baseboard are integrally formed; the first side mode and each of the first end mode and the second end mode are clamped and assembled through a locking device, and a second side mode and each of the first end mode and the second end mode are clamped and assembled through the locking device; each locking device adopts a dovetail male thread and a dovetail groove; the test mode is vertically arranged, and the asphalt is poured through an asphalt pressure pouring device. The invention further discloses a method for manufacturing a test sample by using the asphalt ductility test mode convenient to mount and dismount. The test mode disclosed by the invention has the technical effects of being high in test precision, strongin integrality, one-step formed, smooth in surface and high in compactness.

Description

technical field [0001] The invention relates to the field of road and bridge engineering, in particular to a disassembled asphalt ductility test mold and a method for making a sample. Background technique [0002] Asphalt ductility refers to the degree of ductility of asphalt, and the greater the ductility, the better the shaping of the asphalt. At present, in order to test the ductility of asphalt, the ductility tester and the standard figure-eight test mold are mainly used for testing. [0003] When the asphalt is filled with the figure-of-eight test mold, the excess asphalt needs to be scraped off the upper surface with a scraper, which is time-consuming, labor-intensive, and labor-intensive. In the process of scraping, it is easy to cause deformation of the asphalt test, which affects the test accuracy, and it is difficult to ensure that the test is up and down. The surface is flat and smooth. In order to solve this technical problem, the Chinese invention patent appli...

AI Technical Summary

Problems solved by technology

[0003] When the asphalt is filled with the figure-of-eight test mold, the excess asphalt needs to be scraped off the upper surface with a scraper, which is time-consuming, labor-intensive, and labor-intensive. In the process of scraping, it is easy to cause deformation of the asphalt test, affecting the accuracy of the test, and it is difficult to ensure the top and bottom of the test smooth surface

In order to solve this technical problem, the Chinese invention patent application (CN201610572751.X) discloses a block fixing device for ductility samples. Although it can ensure that the upper and lower surfaces of the test are smooth and smooth to a certain extent, it is installed on the top plate. Three drilling holes were drilled, one of which was a grouting hole and two overflow holes. After the formwork was removed, a scraper was still needed to scrape off the overflowing asphalt in the overflow holes. That is to say, it did not completely solve the technical problem of the smooth surface of the asphalt. The most important thing is that it is difficult to ensure the compactness of the asphalt filling because it only depends on the asphalt overflowing from the overflow hole on the top plate to judge whether the asphalt is filled.

In addition, the two side form baffles welded on the bottom plate are prone to deformation during the disassembly and storage process (such as collision, pressure), and the side form baffles are prone to deformation, which affects reuse. Moreover, the bottom plate, top plate, The ductility test mold is set separately, and additional screws and nuts are required to fix it, which is troublesome to disassemble

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