ACI 301-05 PDF

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Specifications for Structural Concrete, ACI , with Selected ACI References: Field Reference Manual. Front Cover · American Concrete Institute. American. ACI This specification is a Reference Specification that the Engineer or Archi- tect can make applicable to any construction project by citing it in the. Aci – Download as PDF File .pdf), Text File .txt) or read online. Aci

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Specifications for structural concrete, ACI 301-05, with selected ACI…

The engineer on our current project did not specify a minimum concrete temperature, the spec says to place concrete in accordance with ACI The zci is an easy one during the prescribed ‘cold weather’ but if we are not in cold weather concrete 1 is there a minimum temperature required and aaci how long are we required to maintain the temperature after placement?

This may seem as an odd question but it has been a great debate between our in house engineering and quality control department, any insight would be appreciated. A minimum temperature is not often specified for the concrete.

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It is usually in the form of air temperature. As a practical matter, aco would like to see the concrete temperature not go below 40F.

American Concrete Institute Announces New Structural Concrete Specifications

At about 39F, the density of 301-5 decreases and continues to decrease until it freezes. Further, long term performance of concrete with regard to temperature differential is affected. For instance, if you place the concrete while its temperature is 40F, it will expand more at common summer temperatures than it would if placed at, say, 60F My specification requires that placing concrete in cold whether be followed when temperatures are below 40F.

Below 40F the concrete will not gain strength. Cai had a good point about the importance of the concrete temperature in contrast to the meaningless air temperature, which is easy to administer. If you have the proper mix design, heated water, protected or heated aggregates and reasonable protection from the elements, the heat of hydration will over-rule the air temperature if the base the concrete is on is not too cold.

If you are in a cold climate, heated mixes should be available from a good 30-105. We even poured concrete at F from a temporary plant with good aggregate storage. The volume was nothing, but the batching and delivery were critical. Please ignore the first posting at Dick Engineer and international traveler interested in construction techniques, problems and proper design.

Specifications for Structural Concrete, ACI 301-05, with Selected ACI …

So different from what we have to go through here. ASTM C94 has a table for minimum concrete temperatures during cold weather concreting. Red Flag This Post Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

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Specifications for structural concrete, ACI , with selected ACI references | Open Library

Digital Transformation may be defined in a number of different ways by analysts or enterprise software vendors. Defense manufacturing is all about project manufacturing and project accounting. Students Click Here Join Us! Posting Guidelines Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Minimum Concrete Temperature Minimum Concrete Temperature The engineer on our current project did not specify a minimum concrete temperature, the spec says to place concrete in accordance with ACI Minimum Concrete Temperature A minimum temperature is not often specified for the concrete.

Minimum Concrete Temperature Ron had a good point about the importance of the concrete temperature in contrast to the meaningless air temperature, which is easy to administer. Minimum Concrete Temperature Please ignore the first posting at Minimum Concrete Temperature So different from what we have to go through here.

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