The ingredients of road making asphalt are rock aggregate, sand, fine aggregate, and bitumen. Depending on the mixing process and temperature that are used they are referred to as hot mix, warm mix or cold mix asphalt.
Cold asphalt is mixer of aggregates and emulsion or cutback bitumen. Cold mix asphalt could be made at site or off site and transport to site. This flexibility in making cold asphalt is very useful for sites in remote areas and its ability to keep the cold mix for some period if suitably stored is an advantage in meeting exigencies.
There are some special qualities in cold mix asphalt such as it is strong enough to withstand temperature fluctuations. It is eco-friendly since it is made from emulsified wwater-basedmaterial or cutback bitumen at atmospheric temperature, hence less emission, less energy is used. Cold mix patch repair can allow traffic immediately. The more traffic the faster it gets harder.
Uses of cold asphalt
- Cold mix asphalt is ideal for quick and permanent patching of pot hole that popup during rainy weather.
- Ideal solution for quick and effective patching of utility cuts on roads and side walks
- Can serve as a permanent material around man hole covers, water valves and drains
- Can use for repairing isolated depressed spots where water can pool up causing damage to road as well as splashing water on pedestrians during and after rain.
- It is useful to repair small paths, school play grounds, parking lots, and drive ways, service roads since cold mix could be stored and transported in cans, bags or in a small trailer.
Cold mix could be laid with simple tools like shovel, memmoty, and a hand stamper. It is available in the market in sacks of approx. 25 kg, or in cans of 5 kg. It may be possible to ask the manufacturer for bulk supply.