Normal-temperature turtle net crack repairing material and preparation method and application thereof

Abstract

The invention discloses a normal-temperature turtle net crack repairing material and a preparation method and application thereof, and belongs to the technical field of asphalt pavement maintenance and repairing materials. According to a treatment method in the prior art, the whole block of a disease part is generally cut and separated out of a pavement, the construction period is long, raw material preparation is complex, operation is tedious, the filling cost is high, or a repairing material needs to be heated at a high temperature on site, the requirement for the environment temperature is high, and permeability is poor. The material comprises 70-80% wt of an oil phase and 20-30% wt of water, and the oil phase comprises the following components in parts by weight: 70-80 parts of asphalt, 1-4 parts of span, 1-4 parts of a warm mix agent and 20-30 parts of diesel oil. The diesel oil is matched with the span and the warm mixing agent to improve the water melting capacity of the asphalt, and meanwhile, the asphalt can obtain good flowing capacity at normal temperature by utilizing the dilution effect of the diesel oil and water on the asphalt, so that the normal-temperature turtle net crack repairing material can be taken and used at normal temperature at any time, and the turtle net crack of an asphalt pavement is directly repaired.

Description

Technical field [0001] A normal temperature turtle net crack repair material, preparation method and application thereof, belonging to the technical field of asphalt pavement maintenance repair materials. Background technique [0002] Turtle messence is a common damage to the asphalt pavement. Its main manifestation is that the asphalt pavement appears to be connected or partially connected, and the crack is width within 10mm. Compared to ordinary cracks, pit grooves, the main It is characterized by a small number of cracks and shallow, and the film is large, and the turtle shell line is generally present, and the extension is fast. [0003] The treatment method in the prior art is generally separated by the pavement of the disease, and then filled with hard filkets such as hot asphalt, cold tonic, etc., whether it is ordinary asphalt or modified asphalt cold feed. In addition to hot asphalt needs to be heated, the above methods need to include process methods such as professiona...

AI Technical Summary

Problems solved by technology

[0003] The treatment method in the prior art is generally to cut and separate the diseased part from the road surface, and then use asphalt materials such as hot asphalt and cold patch mixed with hard fillers such as sand and gravel to fill, whether it is ordinary asphalt or modified asphalt cold patch , except that hot asphalt needs to be heated and used, the above methods all need to include professional mechanical cutting, on-site mixing of gravel aggregates, large-area filling testing and other technical means. The construction period is long, the raw material preparation is complicated, the operation is cumbersome, the filling cost is high, and cutting filling Afterwards, there is a high risk of peeling off, and the cost performance of repair is low

[0004] In another method of repairing tortoise network cracks, modified mixed asphalt is used to directly repair tortoise network cracks, but this technical means must be heated to a higher temperature for the asphalt to produce a certain fluidity before it can be applied to repair operations. On the one hand, the heating operation of professional equipment on the construction site is difficult, the waiting time is long, and the construction period is increased, or hot asphalt splashes are easy to burn people; It is difficult, and heating will emit a strong smell, which will pollute the environment. At the same time, this method also has high requirements for the temperature of the repair environment. In view of its low-temperature solidification characteristics, rapid solidification will occur at an ambient temperature of 5-10 ° C, and the repair process It is unavoidable to encounter low-temperature roads in the middle of the road. If the test in advance is inaccurate, it is very likely that the asphalt will solidify before it penetrates into the depth of the tortoise. As a result, the asphalt cannot fill the tortoise well, and the strength will inevitably decrease during long-term use, or There are quality problems such as subsidence and secondary cracking, which do not meet the repair requirements. If there are factors such as road surface supermarkets, it will also lead to a decrease in the bonding performance with the road surface, and it is easy to fall off, which cannot meet the repair requirements.

[0005] In addition, the asphalt preparation process of the above-mentioned prior art is relatively complicated, requires high process conditions and equipment requirements, and the preparation cost is high