A Text Book on Brick Pavements

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Western Paving Brick Manufacturers Association, 1917 - Pavements, Brick - 126 pages
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Page 103 - Portland cement is the product obtained by finely pulverizing clinker produced by calcining to incipient fusion an intimate and properly proportioned mixture of argillaceous and calcareous materials, with no additions subsequent to calcination excepting water and calcined or uncalcined gypsum.
Page 121 - From the time the water is applied until the last drop is removed, and floated into the joints of the pavement, the mixture must be kept in constant motion. Before the grout is applied the brick shall be thoroughly wet by being gently sprayed. The grout shall be removed from the box with scoop shovels and...
Page 108 - Ib. (0.43 kg.) each. In general, the number of small spheres in a charge shall not fall below 245 nor exceed 260. The collective weight of the large and small spheres shall be as nearly 300 Ib.
Page 106 - Each head shall be provided with flanges not less than % in. thick and extending outward 2% in. from the inside face of the head to afford a means of fastening the staves. The surface of the flanges of the head shall be smooth and give a true and uniform bearing for the staves. To secure the desired true and uniform bearing the surfaces of the flanges of the head shall be either ground or machined.
Page 110 - ... pages are perforated for removal. The record shall be kept in duplicate, by use of a carbon paper between the first and second sheets, and when all entries are made and calculations are completed, the original record shall be removed and the carbon duplicate preserved in the book. All calculations must be made in the space left for that purpose in the record blank, and the actual figures must appear. The record must bear its serial number and be filled out completely for each test and all data...
Page 104 - Pats of neat cement about three inches in diameter, one-half inch thick at the center, and tapering to a thin edge, shall be kept in moist air for a period of twenty-four hours.
Page 120 - ... (45) degree direction. Before and after this transverse rolling has taken place, all broken or injured brick must be taken up and replaced with perfect ones.
Page 108 - ... and any which pass through or fall below the specified weight shall be replaced by new spheres ; provided, further, that all of the small spheres shall not be rejected and replaced by new ones at any one time, and that so far as possible the small spheres shall compose a graduated series in various stages of wear.
Page 108 - The barrel shall be mounted on a cast-iron frame of sufficient strength and rigidity to support it without undue vibration. It shall rest on a rigid foundation with or without the interposition of wooden plates, and shall be fastened thereto by bolts at not less than four points.
Page 108 - The Frame and Driving Mechanism. — The barrel shall be mounted on a ca'st-iron frame of sufficient strength and rigidity to support it without undue vibration.

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