Rutting plate specimen compaction instrument and compaction method

Abstract

The invention relates to a rutting plate specimen compaction instrument and compaction method, wherein the device comprises a base; the base is provided with a bracket and a test mold fixing frame which can move on the base, and the bracket is provided with a compaction device; the compaction device comprises a compaction rod which can move up and down, the upper end of the compaction rod is connected with a power device, and the lower end of the compaction rod is connected with a compaction head; the compaction head is internally provided with a heating and temperature controlling device; the compaction head is located above the test mold fixing frame. The compaction head can be heated and the temperature can be accurately controlled, so the quality of an indoor molded rutting plate specimen is improved, and the accuracy of a test is ensured; the compaction rod in the compaction device can move up and down, drives the compaction head to repeatedly hit mixed materials in the test mold, hitting is uniform, the efficiency is high, the manual compaction is not required, and the scalding is avoided; by setting the test mold fixing frame, the test mold can move on the base, a hitting position can be changed, the uniform compactness of the mixed materials is improved.

Description

[0001] 【Technical field】 [0002] The invention relates to the field of highway engineering, in particular to a rutting plate sample compaction instrument and a compaction method thereof. [0003] 【Background technique】 [0004] According to JTG E-20-2011 "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering", the density of rutting plate samples used for rutting tests should meet the requirements of Marshall's standard compacted sample density of 100% ± 1%. . At present, in many laboratories, the asphalt mixture mixed in the mixing pot is loosely loaded into the rut slab test mold, and compacted with a preheated small compaction hammer from the side to the middle circle, leveled into a convex arc shape, and wheel milled Although the surface of the rutting slab produced by this method is very dense, the void ratio at the bottom of the rutting slab is relatively large, and the density of the upper and lower asphalt mixture is uneven, which seriously affects ...

AI Technical Summary

Problems solved by technology

[0005] In order to achieve the above effects, some laboratory workers use a compaction hammer with a handle to compact it manually. However, this method has many disadvantages. Insufficient speed or uneven beating and other problems, and the efficiency is low; secondly, manual compaction needs to overcome the self-weight of the compaction hammer, which is also a severe test for physical strength

Third, before the compaction hammer compacts the mixture, it needs to be put into an oven and heated to a very high temperature. Holding the compaction hammer is easy to burn the palm of the hand, and the risk factor is very high.

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