This article is about road repair by some scientific methods in order to improve the strength of the constructed road by some chemical materials that usually enhances the present characteristics into better.
Let us concentrate on a material asphalt to improve the road surface material property. Asphalt is one of the heavy fraction obtained in a petroleum fractional distillation. Asphalt has been used since 1920’s as asphalt concrete for the repair of road surfaces.The bitumen acts as a binder that makes asphalt concrete to sustain the deformations under high loads. Based on the temperature at which the asphalt is applied on the road surface for repair, it is categorized into three classes that is hot mix, and warm mix . Hot mix asphalt is used for the repair of road at a temperature above 150 degree Celsius, warm mix asphalt is used at a temperature of 95 to 120 degree celsius, this results in emission of organic compounds.
Generally asphalt concrete surface is constructed for highways where average daily traffic load is greater than 1200 vehicles per day. The repair of road using asphalt benefits in lowering noise, less cost compared with other repair methods. Asphalt concrete is a composite material usually used in surface roads, parking lots, airports etc for repair. Asphalt repairs Auckland are great at doing this. Sometimes there is a deterioration of asphalt concrete due to factors such as construction quality, environmental affects and traffic loads. The road life can be extended by proper repair through a good design, construction and maintenance practices.
While repairing engineers should take care of subsoil test, so that it could withstand more loads.Most of the commercial areas require two layer of asphalt to be installed at a depth of 1.5 to 2.0 inches per layer.Usually the asphalt road repair costs $1 to $5 per square foot. But in the year 2016 the average cost is estimated to be minimum $60 to maximum $1422. Another important point of asphalt is asphalt patching techniques that may be used for filling cracks, pothole repairs on roads, pavements, parking lots, play grounds, tennis grounds. Some of the common asphalt repair methods are throw and roll, spray injection method, semi-permanent patches, and full depth patching.
Liquid asphalt is filled into a hole and then rolled over usually it’s applied in layers, it starts to solidify as it is exposed to air. the surface is cleaned by removing debris and absorbing water with the help of broom or air compressor, and then the area to be patched is cut with a hand tool and the prepared hole is filled with patching mix and compacted with a roller.