Notes On Concrete And Works in Concrete Especially Written to Assist Those Engaged Upon Public Works
The book Notes On Concrete And Works in Concrete Especially Written to Assist Those Engaged Upon Public Works was written by author Newman, John B Here you can read free online of Notes On Concrete And Works in Concrete Especially Written to Assist Those Engaged Upon Public Works book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Notes On Concrete And Works in Concrete Especially Written to Assist Those Engaged Upon Public Works a good or bad book?
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A mixture of 3^ of sand and ballast to 1 of Portland cement was left three hours to set, and a 6 to 1 concrete five hours, before being deposited. The best results were obtained when the concrete was mixed with the minimum quantity of water aDd rammed into boxes immediately on mixing operations being completed, and deposited when in a state approaching the solidity of stiff clay. 118 Notes on Concrete, and Works in Concrete. CHAPTEK XIV. LOWERING THROUGH WATER PLASTIC OR FRESHLY- MIXED CONCRETE... AND CONCRETE BLOCKS. Necessary precautions — Some different systems, &c. Water must not be allowed to percolate through plastic or freshly mixed concrete, and it should be at the head level to prevent any local flow, and to ensure that the concrete is deposited in still water instead of in a current. If calm water is impracticable the concrete should be made richer than would otherwise be necessary, so as to provide for some of the cement being washed out and lost. Concrete of the usual proportions will generally be secure against the action of moderate seas, after it has been deposited for twenty-four hours ; but a practical test should be made in each particular case.
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