Advanced Concrete Technology 4: Testing & Quality (Advanced by John Newman, B S Choo PDF

Technology

By John Newman, B S Choo

ISBN-10: 0080489990

ISBN-13: 9780080489995

ISBN-10: 0750651067

ISBN-13: 9780750651066

According to the Institute of Concrete Technology's complex Concrete expertise direction, those 4 volumes are a finished academic and reference source for the concrete fabrics technologist. knowledgeable overseas workforce of authors from study, academia and has been introduced jointly to supply this distinctive sequence. each one quantity offers with a unique element of the topic: constituent fabrics, homes, procedures and checking out and caliber. With labored examples, case stories and illustrations all through, the books should be a key reference for the concrete expert for future years. * professional foreign authorship guarantees the sequence is authoritative* Case experiences and labored examples aid the reader practice their wisdom to perform* entire assurance of the topic offers the reader the entire useful reference fabric

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Additional resources for Advanced Concrete Technology 4: Testing & Quality (Advanced Concrete Technology Set)

Sample text

As the material obtained from the cement tests can be either: dry – pressure filter method wet – RAM method The sequence of the two weighings depends on which of these two analysis methods was used. 1 Calibration From the concrete mix proportions, calculate the saturated surface dry (SSD) mass of the coarse aggregates and the fine aggregates which would be required to make a test sample containing 1000 g of cement. Make 10 samples, weigh batching the aggregate for each sample directly into a bucket.

Repeat for a second tray and cloth for the duplicate sample. Collect a test sample mass between 4 and 6 kg, thoroughly mix then divide into two equal halves, recovering all the fines and water, and place on the glass cloths in the two oven trays. Fold the loose ends of wrapper over to cover the samples, and place the first tray with its contents in the microwave oven. Dry the residue in the oven for six minutes at full power. 1 g. As the oven tray is hot the balance should be protected with insulation.

1 General procedures BS 1881: Part 112 (BSI, 1983a) provides for three alternative methods based on different curing regimes, giving strength results on the day following casting. All three methods have the following procedures in common: • Test cubes are cast as normal in accordance with BS 1881: Part 108 (BSI, 1983b)/BS EN 12390–1 (BSI, 2000a). • A cover plate is fitted to the top of the mould to isolate the concrete from the water in the curing tank. • The cubes are immersed in water in an insulated curing tank fitted with a lid.

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Advanced Concrete Technology 4: Testing & Quality (Advanced Concrete Technology Set) by John Newman, B S Choo


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