 | American Society for Testing Materials - 1920 - 868 halaman
...12-oz. graduated prescription bottle to the 44-oz. mark with the sand to be tested. Add a 3-per-cent solution of sodium hydroxide until the volume of the...solution resulting from this treatment is colorless, or has a light yellowish color, the sand may be considered satisfactory in so far as organic impurities... | |
 | Thomas Radford Agg - 1920 - 490 halaman
...has been allowed to stand for a few hours. Fill a 12-oz. graduated perscription bottle to the 4)^ oz. mark with the sand to be tested. Add a 3 per cent....solution resulting from this treatment is colorless, or has a ligh* yellowish color, the sand may be considered satisfactory in so far aa organic impurities... | |
 | Thomas Radford Agg - 1920 - 492 halaman
...1919. Appendix to Report of Committee C-9 on Concrete and Concrete Aggregates," and is as follows: for 24 hours. Observe the color of the clear liquid...solution resulting from this treatment is colorless, or has a Ugh? yellowish color, the sand may be considered satisfactory in so far as organic impurities... | |
 | 1920 - 560 halaman
...solution, after shaking, amounts to 7 ounces. It is then shaken thoroughly and allowed to stand 24 hours. A good idea of the quality of the sand can be formed...solution resulting from this treatment is colorless, or has a light yellowish color, the sand may be considered satisfactory in so far as organic impurities... | |
 | 1922 - 1362 halaman
...thoroughly and let stand for 24 hours. Observe the color of the cinf SAMPLING AND TESTING HIGHWAY MATERIALS. liquid above the sand. A good idea of the quality...although this period is believed to give best results. (2) If the solution resulting from this treatment is colorless, or has a light yellowish color, the... | |
 | Wilson Gardner Harger - 1924 - 672 halaman
...has been allowed to stand for a few hours. Fill a 12-oz. graduated perscription bottle to the 4ja oz. mark with the sand to be tested. Add a 3 per cent...solution resulting from this treatment is colorless, or has a light yellowish color, the sand may be considered satisfactory in so far as organic impurities... | |
 | Gordon Floyd Daggett - 1924 - 206 halaman
...amounts to 7 ounces. Shake thoroughly and let stand for 24 hours. Observe color of the clear liquid above sand. A good idea of the quality of the sand can be...hours, although this period is believed to give best resulte. If the solution resulting from this treatment is colorless, or has a light yellowish color... | |
 | Structural Materials Research Laboratory, Chicago - 1925 - 762 halaman
...12-oz. graduated prescription bottle to the 4%-oz. mark with the sand to be tested. Add a 3-per-cent solution of sodium hydroxide until the volume of the...solution resulting from this treatment is colorless, or has a light yellowish color, the sand may be considered satisfactory in so far as organic impurities... | |
 | American Railway Engineering Association - 1927 - 1494 halaman
...has been allowed to stand for a few hours. Fill a 12-oz. graduated prescription bottle to the 4#-oz. mark with the sand to be tested. Add a 3 per cent...solution resulting from this treatment is colorless, or has a light yellowish color * the sand may be considered satisfactory in so far as organic impurities... | |
 | 1920 - 572 halaman
...liquid above the sand. A good idea of the quality of the sand can be formed earlier than twenty-four hours, although this period is believed to give best...solution resulting from this treatment is colorless, or has a light yellowish color, the sand may be considered satisfactory in so far as organic impurities... | |
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Shake thoroughly and let stand for 24 hours. Observe the color of the clear liquid above the sand. A good idea of the quality of the sand can be formed earlier than 24 hours, although this period is believed to give best results. If the solution resulting... 
