Note 22 — PART I SPECIFICATIONS FOR STREET ROADWAY PAVEMENTS
Reading edition
It should be noted, in a general way, that there is quite a difference in the temperature to which different asphalts may be safely subjected.
Trinidad asphalt, and the California residual pitches, will not be injured by the higher range of temperatures named in these specifications, while Bermudez and some other asphalts should be worked at as nearly as possible to the lower range of temperatures named. The relative amount of loss of the different asphalts when exposed for seven hours to the temperature of 325 degrees (Sect. 44) will supply a rough practical guide as to the temperature permissible—the greater the loss, the closer should the lower range of temperatures be adhered to.