ACI 309. 2R-15 Guide to Identification and Control of Visible Surface Effects of Consolidation on Formed Concrete Surfaces PDF Download

Author: American Concrete Institute
Publisher:
ISBN: 9781942727033
Category :
Languages : en
Pages : 10

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Author: ACI Committee 347--Formwork for Concrete
Publisher:
ISBN: 9780870319105
Category : Concrete construction
Languages : en
Pages : 32

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Book Description

Author: P. G. Malone
Publisher:
ISBN:
Category : Building materials
Languages : en
Pages : 58

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Book Description
Permeable framework is a special class of lined formwork used to produce improvements in the strength and durability of concrete. The bracing and the liner in the formwork are engineered to resist the pressure of plastic (or fresh) concrete, but to allow trapped air and excess water to pass through and be removed during concrete placement and consolidation. The objective in using permeable formwork is to eliminate voids on the surface of the concrete (bug holes) and to increase the strength and durability of the concrete surface immediately behind the formwork. A review of permeable formwork and its use in placing concrete was conducted. Methods, techniques, and materials are discussed, and example applications are described. Benefits of using permeable formwork include a reduction in bug holes and surface defects, improved resistance to freezing and thawing, reduced rates of surface carbonation and chloride-ion infiltration, increased surface strength, reduced form coating requirements, reduced efforts in curing, and reduced surface preparation for coating. The cost of using permeable formwork varies greatly among job sites. However, the cost of using permeable formwork will generally be double that for conventional impermeable formwork. Cost savings can be realized in the extended life of any wooden formwork used behind the filter fabric, the ability to proceed without applying form-release compounds, the decreased cost of final surface preparation (if coatings are to be applied to the finished concrete), and the increased service life of the finished concrete.

Author: Steven H. Kosmatka
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 224

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Portland Cement Association reference, dealing with fundamentals, cold weather concreting, curing, admixtures, aggregates, mixing, and much more.

Author: ACI Committee 302
Publisher: American Concrete Institute
ISBN: 0870311514
Category : Concrete construction
Languages : en
Pages : 81

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Author: ACI Committee 201
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 37

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Author:
Publisher:
ISBN: 9780965231091
Category : Hydration
Languages : en
Pages : 326

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Book Description
Manual of integrated material and construction practices for concrete pavements.

Author: D. M. Roy
Publisher: Strategic Highway Research Program (Shrp)
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 204

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Book Description
Durability of concrete in highway systems is a problem of national concern. In order to better understand the mechanisms which intrinsically control durability in highway concrete, it is necessary to define and understand those factors which impact concrete microstructure which is a consequence of both its formulation and the processes taking place during mixing, placing and curing. This report documents an investigation of those variables which control cement hydration and consequent microstructural development.

Author: United States. Army. Corps of Engineers
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 120

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Author: U. S. Army Corps of Engineers
Publisher:
ISBN: 9781410217127
Category : Dams
Languages : en
Pages : 0

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Book Description
This manual presents fundamental principles underlying the design and construction of earth and rock-fill dams. The general principles presented herein are also applicable to the design and construction of earth levees.