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study on durability of antiwashout concrete under marine

study on durability of antiwashout concrete under marine

Study on Durability of Anti-Washout Concrete Under Marine ...

Jun 01, 2001  Title: Study on Durability of Anti-Washout Concrete Under Marine Environment Author(s): S. Sakoda, N. Takeda, and S. Sogo Publication: Symposium Paper Volume: 200 Issue: Appears on pages(s): 579-594 Keywords: anti-washout concrete; marine environment; reinforce-ment corrosion Date: 6/1/2001 Abstract: In recent years, structures made with anti-washout concrete under marine

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STUDY ON DURBILITY OF ANTI-WASHOUT CONCRETE UNDER

Jul 29, 2001  After 10 years of exposure to marine environment, that of reference concrete is from 5 to 10 times that of anti-washout concrete. Therefore, the anti-washout concrete is durable under marine environment and it is possible to design for durability in the same way as for normal concrete. Availability: Find a library where document is available.

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(PDF) STUDY ON CONSTRUCTION PERFORMANCE AND

PDF In recent years, a long term project is planning in arctic region to exploit the vast natural gas resource into the world energy market, for... Find, read and cite all the research you ...

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Use of anti-washout underwater concrete in marine structures

3. Qualities of anti-washout underwater concrete 3.1 Fresh concrete The fresh concrete has the following properties. -Resistance to segregation under washing action of water is greater -Better flowability, filling and self-leveling properties -Setting time tend to be retarded -No bleeding occurs practically The factors; anti-washout admixtures, chemical

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Frost attack resistance and steel bar corrosion of ...

Jan 01, 2007  This study aims to evaluate frost durability and steel-bar corrosion in antiwashout-underwater concrete, which has been neglected to date. To achieve this goal, repeated freezing and thawing and accelerated steel-bar corrosion tests have been performed for three types of antiwashout-underwater concrete specimens.

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The durability of concrete for marine construction ...

Jan 01, 2016  The impact of SCMs on chloride ingress in a marine environment is demonstrated in Figure 6.1, Figure 6.2, Figure 6.3 (Thomas and Bremner, 2012, Alexander and Thomas, 2015).The figures show chloride profiles for large concrete blocks (0.305 × 0.305 × 0.914 m) after 25 years of exposure in the tidal zone of a marine exposure site on Treat Island, which is near Eastport, Maine, in

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Use of anti-washout underwater concrete in marine structures

3. Qualities of anti-washout underwater concrete 3.1 Fresh concrete The fresh concrete has the following properties. -Resistance to segregation under washing action of water is greater -Better flowability, filling and self-leveling properties -Setting time tend to be retarded -No bleeding occurs practically The factors; anti-washout admixtures, chemical

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Durability of Concrete Bridge Structure under Marine ...

Durability of Concrete Bridge Structure under Marine Environment 431 Journal of Coastal Research, Special Issue No. 83, 2018 durability of concrete bridge structure in marine environment is evaluated. The panoramic view of the bridge is shown in Figure 1.

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Freezing and Thawing Resistance of Anti-Washout Concrete ...

Aug 01, 1991  Abstract: Presents the results of laboratory studies conducted to determine freezing-and-thawing resistance of anti-washout concretes under water. Three anti-washout admixtures were used in these studies. The water-cement ratio was 0.45, and the sand-coarse aggregate ratio was 0.67. A number of test cylinders were made for testing in ...

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A STUDY OF ANTI-WASHOUT UNDERWATER CONCRETE ON

May 20, 2014  A STUDY OF ANTI-WASHOUT UNDERWATER CONCRETE ON UTILIZATION FOR RC MARINE SUBMERGED STRUCTURES ... Ohno, T., Morita, Y. and Matsumoto, S. : Durability of antiwashout underwater concrete after 20 years exposure in seawater, CONSEC'07 Tours, France, 2007. ... Browne, R. D. : Design prediction of the life for reinforced concrete in marine and other ...

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A Study for Improving Properties of Antiwashout Underwater ...

Jun 01, 2002  Abstract. Nowadays, antiwashout underwater concrete is widely used for constructing underwater concrete structures but they, especially placed in marine environment, can be easily attacked by chemical ions such as SO $\^$ 2-/ $\_$ 4/ Cl $\^$-/ and Mg $\^$ 2+/, so the quality and capability of concrete structures go down. In this paper, to solve and improve those matters, flyash

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Reliability-based Durability Design and Service Life ...

a study of anti-washout underwater concrete on utilization for rc marine submerged structures January 2014 Journal of Japan Society of Civil Engineers Ser E2 (Materials and Concrete Structures ...

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STUDY ON THE DURABILITY OF CONCRETE MIXED WITH SEA

This paper investigates the influence of sea water when used to mix concrete on the long term durability of concrete under a marine environment. In addition, the effects of the type of cement and the cover thickness on the long term physical properties and durability of concrete are also studied. Many specimens were exposed for twenty years at the tidal zone of an experimental pool.

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The Mix Ratio Study of Self-Stressed Anti-Washout ...

in practical engineering application. Based on the study of self-stressed concrete (SSC), a research on the mix ratio for the C30 self-stressed anti-washout underwater concrete (SSAWC) was carried out in this paper in hope of solving the above problems, specifically, by adding

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(PDF) Effects of antiwashout admixtures on fresh concrete ...

A study aimed at better understanding of the effects of antiwashout admixtures on concrete properties is discussed. The benefits as well as the limitations of employing such admixtures in concrete ...

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An Experimental Study of Chloride Acceleration on the ...

Results show that: 1) the form of chloride diffusion model in fly ash concrete under atmosphere environment is consistent with that under underwater marine environment; the fly ash has a certain ...

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The durability of concrete for marine construction ...

Jan 01, 2016  The impact of SCMs on chloride ingress in a marine environment is demonstrated in Figure 6.1, Figure 6.2, Figure 6.3 (Thomas and Bremner, 2012, Alexander and Thomas, 2015).The figures show chloride profiles for large concrete blocks (0.305 × 0.305 × 0.914 m) after 25 years of exposure in the tidal zone of a marine exposure site on Treat Island, which is near Eastport, Maine, in

get price

Frost attack resistance and steel bar corrosion of ...

Takeshi O, Yasunori M. Study on affection of admixtures for flowability-retention property of anti washout under-water con-crete. Proc Jpn Concrete Inst 1991;13(1):197–202. Durable concrete ...

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Marine concrete mix design Topic

May 01, 2020  Study on Durability of Anti-Washout Concrete Under Marine Environment. Publication: Special Publication Date: 6/1/2001 High-Performance Concrete on Bridges: The Florida Experience. Publication: Concrete International Date: 2/1/2000

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N.P. Lee D.H. Chisholm

Durability of Reinforced Concrete Structures under Marine Exposure in New Zealand. Study Report SR 145, BRANZ Ltd, Judgeford, New Zealand. ABSTRACT Large concrete blocks, made with either GP Portland cement or a cement blend incorporating either Duracem blast-furnace slag cement, Microsilica 600 amorphous natural silica, or Micropoz silica

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The durability of concrete for marine construction ...

Jan 01, 2016  The impact of SCMs on chloride ingress in a marine environment is demonstrated in Figure 6.1, Figure 6.2, Figure 6.3 (Thomas and Bremner, 2012, Alexander and Thomas, 2015).The figures show chloride profiles for large concrete blocks (0.305 × 0.305 × 0.914 m) after 25 years of exposure in the tidal zone of a marine exposure site on Treat Island, which is near Eastport, Maine, in

get price

(PDF) Influence of anti washout admixtures and coarse ...

Anti-washout under-water concrete is by nature used essentia lly in aquatic . environment and is increasingly finding most of its applications in marine ... underwater concrete in this study ...

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Frost attack resistance and steel bar corrosion of ...

Takeshi O, Yasunori M. Study on affection of admixtures for flowability-retention property of anti washout under-water con-crete. Proc Jpn Concrete Inst 1991;13(1):197–202. Durable concrete ...

get price

use of anti washout underwater concrete in marine ...

Nov 20, 2014  3. Qualities of anti-washout underwater concrete 3.1 Fresh concrete The fresh concrete has the following properties. -Resistance to segregation under washing action of

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An Experimental Study of Chloride Acceleration on the ...

Results show that: 1) the form of chloride diffusion model in fly ash concrete under atmosphere environment is consistent with that under underwater marine environment; the fly ash has a certain ...

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[PDF] Durability of marine concrete structures - field ...

This article presents a series of investigations on six concrete structures along the North Sea coast in The Netherlands. They had ages between 18 and 41 years and most of them were made using Blast Furnace Slag cement. Visual inspections showed corrosion damage in only one structure, related to relatively low cover depths. All structures showed considerable chloride ingress with a large ...

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BEHAVIOUR OF UNDERWATER SELF COMPACTING

concrete SCC were prepared, in order to study the behaviour of under water SCC compared to NC using antiwashout admixtures (SEKAMENT 100 SC) Some parameters were studied such as AWA%, cement content, water cementitious ratio, coarse to fine aggregate ratio, and superplastisizer

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CONCRETE LIBRARY OF JSCE NO. l9, JUNE 1992

[Comments]: As in the case of ordinary concrete, antiwashout underwater concrete should have the desired strength and durability, as well as the capacity to protect steel materials from corrosion. However, when a large unit water content is needed to obtain the required fluidity, i.e. greater than 200

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Marine Concrete Structures: Design, Durability and ...

Sep 13, 2016  Marine Concrete Structures: Design, Durability and Performance comprehensively examines structures located in, under, or in close proximity to the sea. A major emphasis of the book is on the long-term performance of marine concrete structures that not only represent major infrastructure investment and provision, but are also required to operate with minimal maintenance.

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Damage Evolution of Concrete under the Actions of Stray ...

Aug 29, 2021  Based on the mechanism of stray current generation in underground structures, the concrete durability test device for stray current and sulphate in typical soil environment was designed to study the damage of concrete under the action of stray current and sulphate. The deterioration law of concrete under the action of stray current and sulphate was studied by microscopic techniques such

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The Mix Ratio Study of Self-Stressed Anti-Washout ...

Anti-washout underwater concrete (AWC) is widely used in nondrainage strengthening; however, there still exist some problems with it, such as high strength loss and poor interfacial bond in practical engineering application. Based on the study of self-stressed concrete (SSC), a research on the mix ratio for the C30 self-stressed anti-washout underwater concrete (SSAWC) was carried out in this ...

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SP-126: Durability of Concrete: Second International ...

The American Concrete Institute. Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design ...

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Materials Free Full-Text Evaluation of the Hydration ...

In this paper, the effect of nano-SiO2 (NS) and MgO on the hydration characteristics and anti-washout resistance of non-dispersible underwater concrete (UWC) was evaluated. A slump flow test, a viscosity test, and setting time measurement were conducted to identify the impacts of NS and MgO on the rheological properties of UWC. The pH and turbidity were measured to investigate the anti-washout ...

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Underwater Concrete - an overview ScienceDirect Topics

Anti-washout admixtures were developed to provide a higher integrity of concrete placed under water and to reduce the impact that the washed-out material can have on the marine environment. They are suitable for use in deep underwater placement, in intertidal zones and in the splash zone and other situations where water movement may result in ...

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