ABSTRACT
The particle size distribution of the pulverized material obtained in the field was determined by wet sieving (ASTM C117) and dry sieving (ASTM C136). The gradation ofAlturas and Beckwourth pulverized material met the requirements for Caltrans Aggregate Base (AB). In order to find the spatial variability of the gradation of the pulverized material, sieve analyses were conducted on material from different locations in the Poison Lake and Cayton Creek projects. Results indicate that the pulverized material generally met the requirements except for the large and small particle sizes. To determine the effect of variability of the gradation on the performance, three representative gradations were selected for additional testing. The three gradations were mean (Medium gradation), mean+2 standard deviations (Fine Gradation), mean2 standard deviations (Coarse Gradation). Figure 1 shows the three representative gradations of the Cayton Creek pulverized material.
