Porous pavement partially taking steel slag as coarse aggregate

Abstract

The invention belongs to the technical field of porous pavements and particularly relates to a porous pavement partially taking steel slag as a coarse aggregate and taking rubber asphalt as an adhesive. In the porous pavement partially taking the steel slag as the coarse aggregate, the thickness of a structural layer of the porous pavement is between 2.0 and 4.0 centimeters; and the maximum nominal particle size of a construction mixture is 9.5 millimeters. The porous pavement consists of the coarse aggregate, a fine aggregate and a filler, wherein the coarse aggregate is the mixture of the steel slag coarse aggregate and a natural stone coarse aggregate; the fine aggregate is a limestone, diabase or basalt aggregate; and the filler is cement or the mixture of limestone mineral powder andslaked lime. The used rubber asphalt is produced from waste large tire rubber powder of which the particle size is more than or equal to 20 meshes and smaller than or equal to 40 meshes. Traffic and environmental problems caused by a nonporous pavement are solved to the greatest extent, the long-term pavement performance of an asphalt pavement is improved by using the steel slag and waste tires, the supply pressure of a high-quality aggregate is relieved and engineering cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of permeable pavement, in particular to a permeable pavement partially using steel slag as coarse aggregate and rubber asphalt as binder. Background technique [0002] If you want to get rich, build roads first. With the rapid development of my country's economy, cities have built a large number of roads. However, urban roads mostly adopt impermeable hardened pavement. These impermeable pavements have brought many traffic and environmental problems to the city. For example, the hardened road surface reduces the air exchange and air humidity on the ground, accelerates the urban heat island effect, increases the average temperature of the ground, and increases energy consumption. In addition, impermeable roads are prone to water accumulation in rainy days, which not only affects the passage of people and vehicles, but also increases the safety hazards of urban traffic. [0003] Based on the various drawback...

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Problems solved by technology

[0005] In order to solve the urban traffic and environmental problems caused by the impermeable road surface to the greatest extent, the present invention treats and utilizes steel slag and waste tires at the same time, and reduces the demand for natural resources in road engineering construction, and proposes a water-permeable road that partially uses steel slag as coarse aggregate. pavement

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