Cold laid bituminous mixture for roads and manufacturing method and construction technology thereof

Abstract

The invention relates to a cold laid bituminous mixture for roads and a manufacturing method and a construction technology thereof. The mixture comprises the following ingredients, by weight, 1.8-2.5 parts of petroleum resin, 5.5-9.8 parts of NO.0 diesel oil, 35-55 parts of petroleum asphalt for roads and 930-960 parts of mineral aggregate. The manufacturing technology comprises the following steps: firstly, adding petroleum resin into petroleum asphalt for roads; then, adding NO.0 diesel oil to prepare a cold laid asphalt binder; and finally, adding mineral aggregate to prepare the cold laid bituminous mixture. The construction technology comprises the following steps: firstly, processing pit slots which need repairing and maintenance; then, pouring the bituminous mixture; and finally, compacting to form the repaired road. A road repairing material which can be pre-stored for a certain time is developed in the invention. When small pit slots are formed on a road, the road can be repaired timely and directly at environmental temperature; and after the mixture is laid in the pit slots and compacted simply, the traffic can rapidly be opened. In addition, road usage proves that the material can firmly be connected with the original road and has good durability.

Description

technical field [0001] The invention relates to road repair and maintenance materials, in particular to asphalt mixture for cold construction in different seasons, a preparation method thereof and a construction process for road repair and maintenance using the asphalt mixture. Background technique [0002] Potholes will inevitably appear on the asphalt pavement during use, which will not only affect the appearance of the road, but also affect the normal traffic on the road, causing bumpy driving of vehicles and affecting the service level of the road. In addition, various vehicles may borrow adjacent lanes in order to avoid potholes on the road, resulting in continuous merging and diversion of vehicles, which virtually increases the conflict points of traffic flow, especially on roads and bridges with dense traffic. Especially when driving at night, this not only increases the incidence of accidents, but also affects the traffic capacity of the road, so that the originally ...

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Problems solved by technology

[0003] At present, hot-mix asphalt mixture or emulsified asphalt mixture is mainly used. The repair method of hot-mix asphalt mixture is sensitive to temperature, and it is not suitable for use in low-temperature winter. At the same time, it is not suitable for repairing small pits far away from the mixing plant or in scattered locations. In addition, it is impossible to repair potholes on important road sections that urgently need to be quickly restored to traffic; as for the repair method of emulsified asphalt, it takes a long time for the demulsification of ordinary emulsified asphalt, and its poor bonding performance also leads to emulsified asphalt mixing. The material is easy to fly under the action of driving, resulting in repair failure. These problems indicate the necessity of improving the status quo of pothole repair

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