... was calculated using the outcomes of ultrasonic pulse velocity tests. In other words, the increase in dynamic stiffness was proportional to the increase in the ultrasonic pulse velocity. Similarly, details of the test can be found elsewhere. fatigue pavement design recycling of materials...

... to ensure a satisfactory product. Secondary/recycled materials did not fit easily into this system, and were generally not specifically classed as permitted constituents in the SHW. Exceptions were materials such as pulverised fuel ash (PFA), crushed concrete and blast-furnace slag, for which a well...