What to Know About Estimating Compaction Time
Ways to MeasureAccording to Pavement Interactive’s reference desk, there are a couple of ways to measure the air volume that remains in hot mix asphalt after a particular amount of time. Cassidy Paving and other contractors will estimate the time it will take to compact and then use specialized techniques and tools to confirm the compaction. The air voids are usually measured either by a small pavement core extracted from the area or a nuclear gauge that measures the pavement with gamma radiation. It is a personal preference for each contractor on which method they use to determine compaction and any additional time it may need. The following are the variables that can alter your compaction time:
Environmental FactorsThe biggest indicator of compaction is climate and other environmental factors. These play a huge role in the success of asphalt compaction. These include ground temperature, air temperature, and wind speed. You will need a ground temperature of at least 45 degrees for hot mix asphalt to compact properly. The Cassidy Paving crew prefers to wait until the spring to do hot mix projects such as driveways and parking lots. Otherwise, compaction will not be done correctly and it increases your liability for litigation as property owners. You want to make sure that your driving/walking areas are as safe as possible before use.
Mix FactorsAs explained before, according to the mix used, compaction will be successful or not depending on the environmental factors. The following properties help professionals determine compaction time:
- Asphalt Binder
- Amount Used