Method for detecting softening time of asphalt at daytime temperature

Abstract

The invention relates to the technical field related to asphalt softening tests, and specifically relates to a method for detecting the softening time of asphalt at the daytime temperature. The methodcomprises the steps of simulating an asphalt pavement, then simulating the heating of the asphalt pavement under the sunshine to measure numerous groups of the softening time of the asphalt pavementat different sunshine temperatures, drawing a trend chart of the softening time of the asphalt pavement at the sunshine temperatures according to a point depiction method, and thus obtaining a short-sight standard curve equation, thereby being capable of predicting the softening time of the asphalt pavement at the corresponding different sunshine temperatures in different areas, and thus providinga data reference for related departments or personnel. The related departments or personnel can perform relevant treatment on the softened asphalt pavement within the allowable time range so as to avoid the subsequent adverse effects of the softened asphalt pavement.

Description

technical field [0001] The invention relates to the related technical field of asphalt softening test, in particular to a method for detecting the softening time of asphalt at daily temperature. Background technique [0002] Asphalt is a brown-black organic gelatinous substance, including natural asphalt, petroleum asphalt, shale asphalt and coal tar asphalt. The main components are asphaltene and resin, followed by high boiling point mineral oil and a small amount of oxygen, sulfur and chlorine compounds. Glossy, liquid, semi-solid or solid state, brittle at low temperature, good adhesion and anti-corrosion performance. [0003] When asphalt melts, it will produce compounds whose main components are phenols, anthracene, naphthalene, pyridine, etc., which will cause great harm to human health. [0004] Existing asphalt is mainly used for laying road surface, just familiar asphalt road, selects the pavement paved with asphalt to have many advantages that cement pavement doe...

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Problems solved by technology

[0004] Existing asphalt is mainly used for paving roads, which is the well-known asphalt road. The pavement paved with asphalt has many advantages that cement pavement does not have; however, asphalt pavement also has many disadvantages, one of which is softening.

[0005] The asphalt pavement will become soft under the long-term exposure to strong sunlight, and its viscosity will increase. When the wheels pass through the asphalt pavement softened by sunlight, large ruts will be left on the road surface. The wheels will also roll up the asphalt on the road surface and adhere to the wheels, causing serious economic losses and potential safety hazards

[0006] At the same time, the asphalt pavement softened by sunlight will release a lot of harmful gases under the rolling of cars or other heavy objects. When the human body gets close, there will be unpleasant smells, which seriously damage people's health.

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