A Field Investigation of Concrete Overlays Containing Latex, Silica Fume, Or Pyrament Cement PDF Download
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Author: Hamdi Celik Ozyildirim
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 34
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Book Description
This study evaluated latex-modified concretes (LMC) and concretes containing silica fume (SFC) or Pyrament-blended cement (PBCC) in bridge deck overlays in the field. The condition of the overlays was monitored for 4 years. LMC and SFC were placed in 2 days using a vibratory roller screed spanning half the width of the bridge, each side in 1 day. PBCC was placed in small segments, each covering half the width of the bridge, in 2 months. The placement in small segments was dictated by traffic control requirements. PBCC was used with no admixtures. Similarly, LMC was used with no admixture except the latex-modifier. The results indicate that LMC, SFC, and PBCC have low permeability and satisfactory strengths. PBCC develops high very early strengths within hours, even in cold weather, and SFC develops sufficient compressive strength for opening to traffic in 1 day. Since all three concretes are prone to plastic shrinkage, proper and immediate curing are essential.
Author: Hamdi Celik Ozyildirim
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 34
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Book Description
This study evaluated latex-modified concretes (LMC) and concretes containing silica fume (SFC) or Pyrament-blended cement (PBCC) in bridge deck overlays in the field. The condition of the overlays was monitored for 4 years. LMC and SFC were placed in 2 days using a vibratory roller screed spanning half the width of the bridge, each side in 1 day. PBCC was placed in small segments, each covering half the width of the bridge, in 2 months. The placement in small segments was dictated by traffic control requirements. PBCC was used with no admixtures. Similarly, LMC was used with no admixture except the latex-modifier. The results indicate that LMC, SFC, and PBCC have low permeability and satisfactory strengths. PBCC develops high very early strengths within hours, even in cold weather, and SFC develops sufficient compressive strength for opening to traffic in 1 day. Since all three concretes are prone to plastic shrinkage, proper and immediate curing are essential.
Author: John L. Provis
Publisher: Springer Science & Business Media
ISBN: 9400776721
Category : Technology & Engineering
Languages : en
Pages : 396
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Book Description
This is a State of the Art Report resulting from the work of RILEM Technical Committee 224-AAM in the period 2007-2013. The Report summarises research to date in the area of alkali-activated binders and concretes, with a particular focus on the following areas: binder design and characterisation, durability testing, commercialisation, standardisation, and providing a historical context for this rapidly-growing research field.
Author:
Publisher:
ISBN:
Category : State government publications
Languages : en
Pages : 216
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Book Description
Author:
Publisher:
ISBN:
Category : Highway engineering
Languages : en
Pages : 968
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Book Description
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 520
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Book Description
Author:
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 676
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Book Description
Author: Steven H. Kosmatka
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 224
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Book Description
Portland Cement Association reference, dealing with fundamentals, cold weather concreting, curing, admixtures, aggregates, mixing, and much more.
Author: Paul Zia
Publisher:
ISBN:
Category : Fiber-reinforced concrete
Languages : en
Pages : 262
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Book Description
This state-of-the-art report summarizes the results of an extensive search and review of available literature on the mechanical properties of concrete, with particular reference to high performance concrete for highway applications. Included in the review and discussion are the behavior of plastic concrete as well as the strength and deformation characteristics of hardened concrete. Both short-term and long-term effects are considered. Based on the review of the available information, research needs are identified. It is concluded that much research is needed to develop data on the strength and durability properties of concrete which develops high strength, particularly very early strength.
Author: Donald J. Janssen
Publisher: Strategic Highway Research Program (Shrp)
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 228
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Book Description
This study, aimed at improving the freeze-thaw resistance of concrete, consists of three parts. Part I evaluates parameters affecting the freeze-thaw durability of concrete. A modification of the existing standard of method for determining the durability factor of concrete specimens is proposed, and a new procedure for fundamental transverse frequency (used in durability factor calculations) has been developed. Part II focuses on developing better methods for identifying nondurable aggregates, and has resulted in a rapid new test based on the hydraulic fracture of aggregates. Part III describes field experiments to evaluate the freeze-thaw resistance of a number of specified concrete mixes and the use of sealants to mitigate D-cracking. Preliminary field performance results are presented.
Author: Zongjin Li
Publisher: John Wiley & Sons
ISBN: 0470902434
Category : Technology & Engineering
Languages : en
Pages : 698
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Book Description
Over the past two decades concrete has enjoyed a renewed level of research and testing, resulting in the development of many new types of concrete. Through the use of various additives, production techniques and chemical processes, there is now a great degree of control over the properties of specific concretes for a wide range of applications. New theories, models and testing techniques have also been developed to push the envelope of concrete as a building material. There is no current textbook which brings all of these advancements together in a single volume. This book aims to bridge the gap between the traditional concrete technologies and the emerging state-of-the-art technologies which are gaining wider use.
