In the past four years researchers have performed extensive research to better understand the mechanism of low temperature Crack Sealing Machine start sealing and to develop new test procedures and better pavement models to improve asphalt pavements performance. Some of the most notable findings are:
More and more researchers are using fracture tests to evaluate low temperature Crack Sealing Machine working resistance and to model pavement performance
Physical hardening effects made a come-back and are considered in a new specification in Canada
Size effects in fracture testing were experimentally evaluated and the effects are being incorporated in pavement prediction models
New tools, such as acoustic emission, Crack Sealing Machine are being used to understand the crack propagation phenomenon
Low temperature testing of small beams of asphalt mixture and asphalt sealants has been shown to provide critical information on the low temperature properties of these materials and new specifications are being proposed
