. The effect of asphalt and wax emulsions on moisture changes in slash. 3. What are the differences repellency between a primer, two asphalt emulsions, and two wax emulsions? 4. What mixing ratio is the most effective? A laboratory study using a standard fuel and treatment method was devised. Green and dry ponderosa pine (P-inus ^ ) slash was obtained from pole-sized trees at about 4, 000-foot elevation near Sonora, California. The dry slash was cut and broadcast 1 year prior to the study. Green material was cut 1 week before the study began. Ninety green and 90 dry s
. The effect of asphalt and wax emulsions on moisture changes in slash. 3. What are the differences repellency between a primer, two asphalt emulsions, and two wax emulsions? 4. What mixing ratio is the most effective? A laboratory study using a standard fuel and treatment method was devised. Green and dry ponderosa pine (P-inus ^ ) slash was obtained from pole-sized trees at about 4, 000-foot elevation near Sonora, California. The dry slash was cut and broadcast 1 year prior to the study. Green material was cut 1 week before the study began. Ninety green and 90 dry sections about 3 inches in diameter and 16 inches long were cut. A 1-inch-thick disk was removed from the center of these samples for initial moisture determination. The two resulting pieces, 7-1/Z inches long, were numbered and identified with aluminum tags (fig. 1). The matched samples were then weighed; one was used as a control, and the other was dipped immediately in the coating material. Each treatment included three controls and three test samples (table 1). Of the five asphalt- and wax-in-water coatings, four were tested at three different mixing ratios by volume: 1:1, 1:3, and 1:5. The primer was diluted with xylene, C^H^ (0113)2. The 1:5 dilution of RS-1 was impossible to keep from separating and was not Figure samples prior to dipping. 3. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Murphy, James L. , 1927-; Philpot, Charles Walter, 1939-; Garber, Morris J. , 1912-. Portland, Or. : Pacific Northwest Forest and Range Experiment Station, U. S. Dept. of Agriculture
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