An Electronic Apparatus for Determining the Area and Size Distribution of Voids in Hardened Concrete, Using the Chord-intercept Method PDF Download
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Author: United States. Bureau of Reclamation. Commissioner's Office
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 19
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Book Description
Author: United States. Bureau of Reclamation. Commissioner's Office
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 19
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Book Description
Author: David Whiting
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 188
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Book Description
"Super-Water Reducers" were characterized and evaluated as potential candidates for production of low water-to-cement ratio, high strength concretes for highway construction applications. Admixtures were composed of either naphthalene or melamine sulfonated formaldehyde condensates. A mini-slump procedure was used to assess dosage requirements and behavior of workability with time of cement pastes. Required dosage was found to be a function of tricalcium aluminate content, alkali content, and fineness of the cement. Concretes exhibited high rates of slump loss when super-water reducers were used.
Author: Marcia Jill Simon
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 404
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Book Description
Author: Kalliopi K. Aligizaki
Publisher: CRC Press
ISBN: 9780419228004
Category : Science
Languages : en
Pages : 442
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Book Description
Pore Structure of Cement-Based Materials provides a thorough treatment of the experimental techniques used to characterize the pore structure of materials. The text presents the principles and practical applications of the techniques used, organized in an easy-to-follow and uncomplicated manner, providing the theoretical background, the way to analyze experimental data, and the factors affecting the results. The book is the single comprehensive source of the techniques most commonly used for pore structure analysis, covering simple techniques like mercury intrusion porosimetry and water absorption, to the more sophisticated small-angle scattering and nuclear magnetic resonance. The book is an essential reference text for researchers, users, and students in materials science, applied physics, and civil engineering, who seek a deep understanding of the principles and limitations of the techniques used for pore structure analysis of cement-based materials.
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: Masaki Kitazume
Publisher: CRC Press
ISBN: 0203589637
Category : Technology & Engineering
Languages : en
Pages : 436
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Book Description
The Deep Mixing Method (DMM), a deep in-situ soil stabilization technique using cement and/or lime as a stabilizing agent, was developed in Japan and in the Nordic countries independently in the 1970s. Numerous research efforts have been made in these areas investigating properties of treated soil, behavior of DMM improved ground under static and d
Author:
Publisher:
ISBN: 9781780397436
Category : Technology & Engineering
Languages : en
Pages : 302
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Book Description
This manual provides technical guidance for performing precise structural deformation surveys of locks, dams, and other hydraulic flood control or navigation structures. Accuracy, procedural, and quality control standards are defined for monitoring displacements in hydraulic structures.
Author: Terence Allen
Publisher: Elsevier Science Limited
ISBN: 9780444515643
Category : Science
Languages : en
Pages : 660
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Book Description
Important new work in rapidly expanding field of powder technology.
Author: American Association of State Highway and Transportation Officials
Publisher: AASHTO
ISBN: 1560510552
Category : Pavements
Languages : en
Pages : 622
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Book Description
Design related project level pavement management - Economic evaluation of alternative pavement design strategies - Reliability / - Pavement design procedures for new construction or reconstruction : Design requirements - Highway pavement structural design - Low-volume road design / - Pavement design procedures for rehabilitation of existing pavements : Rehabilitation concepts - Guides for field data collection - Rehabilitation methods other than overlay - Rehabilitation methods with overlays / - Mechanistic-empirical design procedures.
Author: J. Marchand
Publisher: CRC Press
ISBN: 1482271559
Category : Architecture
Languages : en
Pages : 285
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Book Description
Concrete durability in climates where freezing and thawing occurs is a continuing problem. It is particularly acute for highway and bridge structures, where de-icing salts are used to combat the effects of frost, snow and ice. These salts can cause damage to concrete and accelerate corrosion of reinforcements. This book presents the latest internat
