Stone mastic asphalt (SMA) pavement construction method

A technology of asphalt mixture and construction method, which is applied in the direction of roads, roads, on-site paved coagulation pavements, etc., which can solve the problems of oil flooding, SMA quality fluctuations, and strong sensitivity of construction factors, etc., to eliminate influences and fluctuations and the effect of changing

Active Publication Date: 2015-07-08
MCC NORTHEAST CONSTR SHENYANG ENGTECH CO LTD +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the construction technology requirements of SMA are high, and the sensitivity to construction factors is strong. During the construction process, the temperature is not easy to control, and t

Method used

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  • Stone mastic asphalt (SMA) pavement construction method
  • Stone mastic asphalt (SMA) pavement construction method
  • Stone mastic asphalt (SMA) pavement construction method

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Embodiment Construction

[0013] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that these embodiments may be practiced without these specific details.

[0014] picture 1 is the flow process of the SMA asphalt mixture pavement construction method of the present invention picture ,like picture Shown, described SMA pavement construction method comprises the following steps:

[0015] First, in step S100, determine the ore gradation and the asphalt ratio of the raw materials constituting the SMA asphalt mixture, specifically, select the raw materials that form the SMA, then determine the ore gradation and the optimal asphalt ratio of the raw materials, and determine the ratio of the raw materials The specific process of ore grading and optimum asphalt ratio will be in picture 2, where the asphalt ratio refers to the percentage of the mass ratio of asph...

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Abstract

The invention provides a stone mastic asphalt (SMA) pavement construction method. The method comprises the following steps of determining mineral aggregate gradation and the optimal asphalt-aggregate ratio of SMA raw materials, carrying out bonding construction on a lower bearing layer, mixing the SMA raw materials, wherein an asphalt heating temperature is in a range of 170-180 DEG C, an aggregate heating temperature is in a range of 185-195 DEG C and a discharging temperature is in a range of 175-185 DEG C, spreading the materials, wherein a factory temperature is in a range of 170-185 DEG C, an attendance temperature is greater than or equal to 170 DEG C and a spreading temperature is greater than or equal to 170 DEG C, carrying out rolling compaction by primary rolling compaction, secondary rolling compaction and final rolling compaction, wherein a primary rolling compaction temperature is greater than or equal to 160 DEG C, a secondary rolling compaction temperature is greater than or equal to 140 DEG C and the final rolling compaction is greater than or equal to 120 DEG C, and opening to traffic when the pavement temperature is less than 50 DEG C. The method realizes temperature control from stirring to rolling compaction and eliminates temperature influence on construction.

Description

technical field [0001] The invention relates to the technical field of road construction, and more specifically, relates to a method for constructing an SMA asphalt mixture road surface. Background technique [0002] The traffic flow and driving frequency of modern highways and roads are increasing rapidly, and the axle load of freight vehicles is increasing continuously. Ordinary asphalt roads and roads are extremely prone to potholes and cracks. Therefore, it is required to further improve the anti-flow performance of the road surface, that is, anti-rutting under high temperature The ability to improve flexibility and elasticity, that is, the ability to resist cracking at low temperatures; improve wear resistance and prolong service life. SMA (Stone Mastic Asphalt, referred to as SMA) asphalt mastic macadam mixture is a kind of asphalt mastic filled intermittently graded coarse aggregate composed of asphalt, fiber stabilizer, mineral powder and a small amount of fine aggre...

Claims

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Application Information

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IPC IPC(8): E01C7/26
CPCE01C7/353
Inventor 韩越许洪川王嘉琦胡长亮邢世洋
Owner MCC NORTHEAST CONSTR SHENYANG ENGTECH CO LTD
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