Construction technology of expressway capable of bearing operation of heavy trucks

Abstract

The invention discloses a construction technology of an expressway capable of bearing operation of heavy trucks. The construction technology comprises the following steps: uniformly stirring granite blocks and rubber granules, paving a stable base course, pouring slurry into the granite blocks and the rubber granules, and after the stable base course is solidified, pouring a concrete composite soil cushion course; and mixing high-elastic rubber granules and polyester fibers into an asphalt mixture for paving the surface course, stirring the asphalt, the rubber granules, the polyester fibers, gravel and granite blocks into a mixture by using a binder at temperature of 70-140 DEG C, and sequentially paving a road carpet and a skid-resisting surface course so that the bonding strength with concrete and all the courses can be reinforced, the elasticity can be improved, and damage caused by temperature difference change can be prevented. With the construction technology, the high-temperature stability and the fatigue durability of the pavement can be greatly improved, so that the pavement has low-temperature cracking resistance and has no reflection crack, the tension, the water resistance and the skid resistance can be enhanced, and the running noise can be lowered.

Description

technical field [0001] The invention relates to a construction technology, in particular to a construction technology for expressways carrying heavy vehicles. Background technique [0002] With the development of the economy, the construction mileage of expressways has also increased rapidly, but the tonnage of vehicles passing through has always been limited to 30-59 tons. At present, the tonnage of the vehicle's load, some of which have a carrying capacity of more than 100 tons, and some of the built expressways are difficult to carry heavy loads due to poor quality, resulting in frequent accidents such as damaged road surfaces and broken bridges. The bed, subgrade, and cushion concrete only reach the grade of C30-C40, which is difficult to meet the heavy load of a 100-ton vehicle. Contents of the invention [0003] In view of the above problems, the present invention proposes a construction technology for expressways carrying heavy vehicles. After the construction of t...

AI Technical Summary

Problems solved by technology

At present, the tonnage of vehicle loads, some of which have a carrying capacity of more than 100 tons, and some expressways built are difficult to carry heavy loads due to poor quality, resulting in frequent accidents such as damaged road surfaces and broken bridges. The bed, subgrade, and cushion concrete only reach the grade of C30-C40, which is difficult to meet the heavy load of 100-ton vehicles.