Iron ores, salt and sandstones . ns andsave in labor. It is stated that a foreman with four unskilledhelpers can prepare 8,000 cans per hour with this system. Increasing Strength of Lime. Mr. Thomas W. Capponfound that a magnesium lime has its binding or cementingpower greatly improved by the use of small quantities ofcalcium chloride. This use is claimed to be especially de-sirable in making wall plaster without use of gypsum, re-sulting in a very high grade hard plaster by use of sand,magnesian lime, and calcium chloride. It has also been found effective in retarding the set ofPortland cemen
Iron ores, salt and sandstones . ns andsave in labor. It is stated that a foreman with four unskilledhelpers can prepare 8,000 cans per hour with this system. Increasing Strength of Lime. Mr. Thomas W. Capponfound that a magnesium lime has its binding or cementingpower greatly improved by the use of small quantities ofcalcium chloride. This use is claimed to be especially de-sirable in making wall plaster without use of gypsum, re-sulting in a very high grade hard plaster by use of sand,magnesian lime, and calcium chloride. It has also been found effective in retarding the set ofPortland cement. The experiments in the Sibley Laboratoryindicated that chloride of calcium added in small percentageseither to the ground clinker as a powder, or mixed with thewater in guaging, has an important effect in extending thetime of setting of Portland cement, and apparently it has noharmful effect on the permanent strength and hardness. Itsuse in dry form with the clinker is as yet doubtful on accountof the calcium absorbing WEST VIRGINIA GEOLOGICAL SURVEY. 351 For Dessication. Calcium chloride with its strong affinityfor water becomes an important drying agent. It isused for drying chemical products, aniline colors, pottery,vegetables, fruits etc. It allows rapid removal, with pre-cision, and at low temperatures, the water contained in thebodies to be dried. This water when removed from theseproducts, can be driven from the calcium chloride, by intro-ducing it with asbestos, pumice, or coke, into an oven heatedto several hundred degrees. Thazving Ground. In excavations for sewers, waterpipes, foundations, etc., it is claimed the ground can be thor-oughly softened by drilling holes three or four inches deep,about one foot apart, and pouring hot calcium chloride inthe form of a 30 per cent solution into these holes. Thispermeates the ground and removes the frost, no matter howdeep, and prevents further freezing, because the freezing pointof the 30 per cent solution is 32 de
Size: 1294px × 1931px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishermo, booksubjectsalt
