Early Age Behavior
Why is HIPERPAV Important?
The service life of concrete pavements is highly dependent upon their early-age behavior. Portland cement concrete pavements (PCCP) are significantly affected by temperature and moisture changes during the first 72 hours following placement.
Stresses in the concrete build up primarily due to the combined effects of curling and warping and restraint to axial movements at the slab-subbase interface. These stresses may be of sufficient magnitude to cause cracking because concrete strength is relatively low during this “early-age” period.
Monitoring of the stresses during this time is extremely important since problems during this early-age may lead to loss of pavement performance in the long term. A pavement designed for a life of 30-years, for example, may only last 10-years if problems occur during this critical early-age period. Conversely, if no problems occur during this period, the pavement may exceed the intended design life, resulting in an overall cost-savings.
What Can HIPERPAV Consider?
With HIPERPAV, you can input everything you know about a concrete project – mix design, joint design, subbase type, curing method, weather conditions, sawcut timing, everything – and accurately predict the stress and strength behavior of the concrete over the first critical 72 hours.