By ACI

ISBN-10: 0870313975

ISBN-13: 9780870313974

The goals of chilly climate concreting practices are to avoid harm to concrete as a result of freezing at early a long time, make sure that the concrete develops the necessary power for secure removing of kinds, retain curing stipulations that foster common energy improvement, restrict speedy temperature alterations, and supply security in step with the meant serviceability of the structure.

Concrete positioned in the course of chilly climate will advance adequate energy and sturdiness to meet meant provider specifications whilst it's thoroughly produced, put, and guarded. This consultant offers info for the contractor to choose the simplest easy methods to fulfill the minimal chilly climate concreting requirements.

This consultant discusses: concrete temperature in the course of blending and putting, temperature loss in the course of supply, guidance for chilly climate concreting, defense requisites for concrete that doesn't require building helps, estimating power improvement, tools of defense, curing necessities, and admixtures for accelerating environment and energy achieve together with antifreeze admixtures. The fabrics, tactics, quality controls measures, and inspections defined during this rfile could be validated, monitored, or played as acceptable in basic terms by way of members keeping definitely the right ACI Certifications or similar.

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Extra info for ACI 306R-10: Guide to Cold Weather Concreting

Example text

The bureau conducted experiments on orchard heating (smudging) with the Army Chemical Warfare Service to determine if the smoke barrages, which the Army used to cover troop movements in the field, were effective against frost damage. 38 These two investigations were directly related to preserving the economic value of agricultural commodities. As noted above, the bureau was also responsible for monitoring volcanoes and earthquakes; seismological studies were mandated because they bore a “sufficiently close relation” to what the bureau did with the weather studies.

Fruit-frost warnings were important to citrus growers in California and to orchardists in Oregon and Washington—such warnings enabled them to heat their orchards by burning oil in smudge pots and thereby save their crops from a hard freeze. Similar forecasts and advisories were aimed at tobacco and grain farmers, at New York apple growers (who needed to spray for scab), at millers (who needed to rid their mills of Mediterranean flour moths by flooding them with very cold air), and at beekeepers (whose bees needed a cleansing flight).

Similar forecasts and advisories were aimed at tobacco and grain farmers, at New York apple growers (who needed to spray for scab), at millers (who needed to rid their mills of Mediterranean flour moths by flooding them with very cold air), and at beekeepers (whose bees needed a cleansing flight). Western foresters lobbied hard for expansion of fire-weather forecasting, which used meteorological conditions to warn of extreme fire danger and to advise when precipitation would help to quench fires.

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ACI 306R-10: Guide to Cold Weather Concreting by ACI


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