Manual on Control of Air Content in Concrete PDF Download

Author: David Whiting
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 56

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Author:
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 528

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Author: United States. Bureau of Reclamation
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 528

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Book Description

Author: United States. Department of the Interior. Water and Power Resources Service
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 666

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Book Description

Author:
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 668

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Book Description

Author:
Publisher: American Concrete Institute
ISBN: 0870312758
Category : Technology & Engineering
Languages : en
Pages : 203

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Book Description
This manual is intended to guide, assist, and instruct concrete inspectors and others engaged in concrete construction and testing, including field engineers, construction superintendents, supervisors, laboratory and field technicians, and workers. Designers may also find the manual to be a valuable reference by using the information to better adapt their designs to the realities of field construction. Because of the diverse possible uses of the manual and the varied backgrounds of the readers, it includes the reasoning behind the technical instructions. The field of concrete construction has expanded dramatically over the years to reflect the many advances that have taken place in the concrete industry. Although many of the fundamentals presented in previous editions of this manual remain relevant and technically correct, this eleventh edition incorporates new material to address these advances in technology

Author: American Concrete Institute
Publisher: American Concrete Institute
ISBN: 0870311948
Category : Concrete
Languages : en
Pages : 660

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Author: United States Department of the Army
Publisher:
ISBN:
Category :
Languages : en
Pages : 52

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Author: American Concrete Institute
Publisher:
ISBN:
Category : Building inspection
Languages : en
Pages : 286

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Book Description

Author:
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 230

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Book Description
This study evaluated the impacts of construction on the air content and air-void system structure of Portland cement concrete pavements. The primary intent was to quantify the air content of fresh concrete before and after it has gone through the slipform paver. The air-void system parameters of hardened concrete were then assessed using cast and extracted core specimens. The results of the air content testing on fresh concrete and the concrete cylinder specimens cast in the field suggested that there is some loss of air as the concrete passes through the paver. Laboratory testing performed on cores extracted from the pavement did not provide any conclusive evidence that entrained air is lost during the slipform paving process. In fact, many of the extracted cores had measured air content values that were much higher than the specification requirement. If excessive, this could result in increased permeability and low-strength related issues. Although a rigorous statistical analysis was not performed, the results suggest that the air content testing on fresh concrete is not capturing the true air content of the concrete placed with a slipform paver. The fresh concrete air content is generally lower than the air content measured in the cores.