Annual report of the Regents . l analysis gave sand, substance and silt. In burning, incipient fusion occurred atcone .03, with 11^ shrinkage; vitrification at cone 2, with 14^shrinkage, and viscosity at cone 5. Soluble salts, .54^. The mixture of 2 and 3 showed similar properties, but hardenedat a somewhat lower temperature. The tensile strength was from40 to 50 pounds a square inch; the clay was slightly more grittythan the top part, but was equally plastic; 33^ of water was re-quired to temper it; the air shrinkage was Q^ at cone .04; incipientfusion occurred with a shrinkag
Annual report of the Regents . l analysis gave sand, substance and silt. In burning, incipient fusion occurred atcone .03, with 11^ shrinkage; vitrification at cone 2, with 14^shrinkage, and viscosity at cone 5. Soluble salts, .54^. The mixture of 2 and 3 showed similar properties, but hardenedat a somewhat lower temperature. The tensile strength was from40 to 50 pounds a square inch; the clay was slightly more grittythan the top part, but was equally plastic; 33^ of water was re-quired to temper it; the air shrinkage was Q^ at cone .04; incipientfusion occurred with a shrinkage of 12^; vitrification began at 1,the shrinkage was 16^. The clay grew viscous at 5. The color ofthe burned clay is light red, but deepens on hard firing. The solu-ble salts amounted to .2^. The bricks made at these works are all dry pressed; the productis used chiefly in Brooklyn. By mixing the clays, with addition of manganese, and by hardor soft burning, the colors buff, pink, gray, brown, red, and speck-led, are o o oP. Oi » beft (Uo d o CD
Size: 1159px × 2156px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorne, bookcentury1800, bookdecade1880, booksubjectscience
