Asphalt Pavement Rotary Friction Coefficient Tester and Its Test Method for Simulating Rainfall

Abstract

The invention relates to a rainfall simulation rotary bituminous pavement friction coefficient tester and a testing method thereof. The rainfall simulation rotary bituminous pavement friction coefficient tester comprises a rain box divided into a main equipment area and an auxiliary equipment area, wherein the main equipment area is divided into an upper part and a lower part by a rain collection baseplate, and a water collection box is arranged at the lower part; a water distributing pipe with nozzles is arranged at the top of the right part of the upper part; two clamp strips are arranged at the bottom of the right part of the upper part, and a test mold is placed between the two clamp strips; a dynamic rotary friction coefficient tester is arranged on the upper surface of the test mold; a water storage bucket is arranged at the bottom of the left part, and the bottom of the water storage bucket is connected to a water pump in the water collection box through a water inlet pipe; another water pump is arranged at the top of the water storage bucket and connected with the water distributing pipe through a water delivery pipeline; a tee joint, a flowmeter and a solenoid valve are sequentially arranged on the water delivery pipeline from bottom to top; the tee joint is connected with a water return pipe with an adjustment valve, and the water return pipe is connected to the water storage bucket; a control box is arranged in the auxiliary equipment area. The rainfall simulation rotary bituminous pavement friction coefficient tester is simple in structure, and simple and convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of performance testing of asphalt pavement, and in particular relates to a rotating friction coefficient tester for asphalt pavement simulating rainfall and a testing method thereof. Background technique [0002] With the development of the economy, the grade of roads has been continuously improved, the traffic volume has increased, and the speed of vehicles has accelerated. The problem of anti-skid on asphalt pavement has become increasingly prominent. Especially in rainy days, the anti-skid performance of asphalt pavement is greatly reduced, which can easily cause vehicles to slip out of control, causing casualties. Major accidents such as property damage. In order to verify whether the antiskid performance of asphalt pavement can meet the requirements of use, we use a dynamic rotary friction coefficient tester to measure the pavement friction coefficient. However, during the test, the friction coefficien...

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Problems solved by technology

However, in the test process, only the friction coefficient of asphalt pavement under non-rainy conditions can be tested, and it cannot reflect the friction coefficient of asphalt pavement under different rainfall intensities and surface runoff coefficients under rainy conditions.

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