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Cementitious properties and microstructure of an

5/23/2015 · Circulating fluidized bed combustion fly ash was used to activate the hydration of ground granulated blast furnace slag to produce non-cement SCA eco-binder without Portland cement (OPC). The engineering properties of SCA paste and mortar with air or water curing were evaluated. The microstructure and hydration products of the SCA binder were investigated by scanning electron …

Technical Acronyms

A 1 2 a - Annum 3 A - Area 4 AA - Ash Analysis 5 AA - Advanced Analysis 6 A/A - Air to Air 7 AAC - Ammonical Ammonium Carbonate 8 AAC - Autoclaved Aerated Concrete 9 AAC - Acceptable Ambient Concentration 10 AAD - Audibert Arnu Dilatometer 11 AAD - Automatic Air Damper 12 AADT - Average Annual Daily Traffic 13 AAF - Alloy Adjustment Factor 14 ...

Durability of steam‐cured concrete with slag under the

May 19, 2016 · In this study, the durability characteristics of steam‐cured concrete containing slag exposed to the impact of concrete de‐icing chemicals and freeze‐thaw cycles were investigated with the aim of improving the quality of precast concrete products. Scaling, chloride ion penetration, pull‐off strength and the relative dynamic modulus of ...

Completed Projects

Geopolymer Concrete manufactured using different quality fly ashes will be evaluated for the mechanical properties such as unit weight, setting time, workability, compressive strength, tensile strength, etc.This is aimed to study the variation in properties of fly ash-based geopolymer concrete (GPC) curing without elevated heat.

DEICING SALT SCALING RESISTANCE OF HIGH-VOLUME FLY ASH

salt scaling resistance of air-entrained concrete incorporating various sources of Class C, and a Class F fly ash. RESEARCH SIGNIFICANCE The major aim of this work was to evaluate salt scaling resistance of concrete made with Class C and Class F fly ash. The properties measured were compressive strength and salt scaling resistance with

2014 Materials and engineering catalogue by Woodhead

2014 Materials and engineering catalogue details all new titles and complete backlist titles available.

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MATERIALS AND STRUCTURES

MATERIALS AND STRUCTURES Vol. 42 - 2009 SPIS TREŚCI is. 1(315) 1 Durability characteristics of self-consolidating concrete designated for repair applications / SOO-DUCK HWANG and KAMAL H. KHAYAT 15 Hydration monitoring of cement-based materials with resistivity and

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FSv CVUT: katedra mechaniky [k132]

In: CONCREEP-10 Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures. Vienna: TU Wien, Institute For Mechanics of Materials and Structures, 2015. pp. 1269-1278. ISBN 978-0-7844-7934-6. 2015. Human-induced loads on grandstand as non-stationary Gaussian processes; Rokoš, O. - Máca, J.

CHAPTER 11 – CORROSION ASSESSMENT

Vol 1 Chapter 11 Corrosion Assessment October 2006 Final WRMP 11-3 and 160mg/L for ground water and from 9 to 48mg/L for the Ugum treated supply. The main contribution of calcium and magnesium to water corrosivity is its effect on scaling, represented in Table 11-1 by the Langlier Index (LI) although other indices can also be used.

The frost resistance versus air voids parameters of

The lack of frost durability was partially attributed to higher L values of VMA concrete that varied between 120 lm and 420 lm compared with 250 lm for non-VMA concrete. VMA mixtures were reported to have greater capillary Research result indicates that the type of AFA is more important for decrease of compressive strength after freeze–thaw ...

EconPapers

Sustainability of Government Social Media: A Multi-Analytic Approach to Predict Citizens’ Mobile Government Microblog Continuance pp. 1-17 Shuiqing Yang and Xianwu Zeng Utilization of CFBC Fly Ash as a Binder to Produce In-Furnace Desulfurization Sorbent pp. 1-17 Chulseoung Baek, Junhyung Seo, Moonkwan Choi, Jinsang Cho, Jiwhan Ahn and ...

Concrete Durability - an overview

In many cases concrete durability is threatened by natural weathering or even by chemical attack (section 16.6.8), but only in certain locations or applications is concrete subjected to mechanical wear, including abrasion, attrition and erosion of concrete surfaces. In such places, clearly it is the quality and properties of the exposed surface ...

Purdue e-Pubs - International Conference on Durability of

The data invariably show the importance of the binder type in terms of resistance to chloride ingress and the protection conferred on embedded steel reinforcement, however, the overall performance of SCM concrete was equivocal as high replacement levels were observed to lead to increased surface deterioration (scaling) in some cases.

Evaluation of Scaling Progress in Harbor Concrete Structure

Physical and chemical surveys of concrete were conducted on the upper crests of approximately 10 to 40 year old harbor breakwaters on coastal areas in Hokkaido to analyze the progress of scaling. These surveys indicated that concrete with a compressive strength of 35MPa or more has high resistance to scaling.

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Concrete Defects – Causes and Remedies

Scaling - Causes • The use of non-air-entrained concrete or too little entrained air. • Application of excessive amounts of calcium or sodium chloride deicing salts on concrete with inadequate strength, air entrainment, or curing. • Any finishing operation while bleed water is on the surface. Consequently, overworking the surface will result

Effects of Ground Granulated Blast Furnace Slag in Portland

Effects of Ground Granulated Blast Furnace Slag in Portland Cement Concrete (PCC)-Wisconsin Highway Research Program WHRP 07-01 Irene K. LaBarca, Ryan D. Foley, Steven M. Cramer Department of Civil and Environmental Engineering University of Wisconsin-Madison January 2007 Expanded Study SPR # 0092-05-01

Avoid Surface Defects on Exterior Slabs

Apr 21, 2011 · Avoid Surface Defects on Exterior Slabs ... overall quality of concrete (strength, mix proportions, aggregate properties, etc.) and quality of the air-entrainment and curing contribute to the ...

IJERM | International Journal of Engineering Research and

Application of self crack healing capacity of concrete induced with bacteria is the promising technology of the future to repair and maintain the cracks in concrete structures. This mechanism of self crack healing using precipitated calcite by microorganisms enhances both strength and durability characteristics of concrete significantly.

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Lecture 07: Service life of building structures

the concrete, enabling corrosion of the reinforcement if water is present. • The process can be accelerated if chloride is available, which acts as catalyst. • Corrosion of embedded metals in concrete can be greatly reduced by sufficient concrete cover Concrete structure Minimum cover depth [mm] Concrete cast against and permanently exposed to

TESTING OF CONCRETE DURABILITY

TESTING OF CONCRETE DURABILITY | 5 Cracks Concrete cover is the main protection from external influences that can cause reinforcement corrosion. The occurrence of cracks leads to the destruction of concrete cover and concrete permeability increase. Crack width measurement 1. Digital camera • Magnification: 260

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2014 Energy and environmental technology catalogue by

The complete 2014 Energy and environmental technology catalogue detailing all new, forthcoming and published title in the series.

Durability of Concrete in Saline Environment

Besides studies of the surface scaling at field exposure, field exposed concrete is also tested for resistance to salt scaling in a standard laboratory test (the Borås Method, SS 13 72 44) 19,101. 11 Reinforced concrete slabs, height l 00 cm, width 70 cm, thickness 10-20 cm, are mounted on the sides of the pontoons. A submerged-a

Clean Coal Technologies in Japan

As a result of this assessment, the development of coal liquefaction technology in Japan moved from the research stage into the practical application stage. Furthermore, development of materials and new processes are expected to significantly influence development in other industries.

Process Flow Diagram