Technical Innovation for Realization of Akashi-Kaikyo Bridge. (Winner of 1995 Bill Curtin Medal).

Furuya, Nobuaki; Tatsumi, Masaaki; Curtin, W. G.

doi:10.1680/istbu.1994.26779

Proceedings of the Institution of Civil Engineers - Structures

1994

DOI: 10.1680/istbu.1994.26779

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Technical Innovation for Realization of Akashi-Kaikyo Bridge. (Winner of 1995 Bill Curtin Medal).

Nobuaki Furuya¹,

Masaaki Tatsumi²,

W. G. Curtin³

Abstract: Nobuaki Furuya nd i Structurol andThe Akashi-Kaikyo Bridge, which is under construction hy the HonshuShikoku Bridge Authority, and has a scheduled completion date in 1998, is the world's longest suspension bridge, with a main bridge is not only large in terms

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Experimental study and modelling of heat evolution of blended cements

Paine

Dhir

2005

Advances in Cement Research

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The advisability of controlling the temperature rise and fall in concrete at early age is well recognised, and the choice of an appropriate, low-heat cement with suitable heat of hydration characteristics can assist in this control. This is particularly pertinent with respect to water-retaining and massive concrete structures where the need to prevent early-age thermal cracking is paramount. Portland cement/ground granulated blast furnace slag (PC/ggbs) or PC/fly ash cements are often used in these structures due to their low heat hydration properties. This paper presents the results of isothermal conduction calorimetry tests carried out on PC/ggbs and PC/fly ash cements and describes a model that uses these results to simulate the heat evolution processes in hydration concrete sections at early ages. The tests covered a range up to 90% ggbs and up to 65% fly ash content by mass of cement, at temperatures from 58 to 608C. For PC/ggbs cements, the total heat of hydration can be considered as a composition of three components, that is heats from an initial Portland cement reaction, a latent ggbs hydraulic reaction and co-reactivity effects of PC and ggbs; whereas for PC/fly ash cements, the initial PC reaction dominated with a small co-reactivity effect.

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Experimental study and modelling of heat evolution of blended cements

Paine

Dhir

2005

Advances in Cement Research

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Predicting early-age temperatures of blended-cement concrete

Paine¹,

Dhir²,

Li³

2006

Proceedings of the Institution of Civil Engineers - Constructio

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The advisability of controlling the temperature rise and fall in concrete at early age is well recognised, and the choice of an appropriate low-heat cement with suitable heat of hydration characteristics can assist in this control. This is particularly pertinent with respect to water-retaining and massive concrete structures, where the need to prevent early-age thermal cracking is paramount. Portland cement/ground granulated blast-furnace slag (PC/ggbs) or PC/fly ash cements are often used in these structures because of their low heat of hydration properties. This paper describes a study carried out to predict the early temperature rises for concrete containing different PC/ggbs and PC/fly ash cements. Current UK guidance normally requires knowledge of the proportion of ggbs or fly ash. Such information may not be available when using the recently published European standards for low-heat cements. To provide design data for these materials, cements just meeting the limiting heats of hydration for the low-heat and very low-heat classes were simulated. Temperature rises were predicted by a computer program that applied heat of hydration models to general heat flow theory with parameters to account for cement content, formwork type and section thickness.

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Technical Innovation for Realization of Akashi-Kaikyo Bridge. (Winner of 1995 Bill Curtin Medal).

Abstract: Nobuaki Furuya nd i Structurol andThe Akashi-Kaikyo Bridge, which is under construction hy the HonshuShikoku Bridge Authority, and has a scheduled completion date in 1998, is the world's longest suspension bridge, with a main bridge is not only large in terms

Cited by 2 publications

References 0 publications

Experimental study and modelling of heat evolution of blended cements

Experimental study and modelling of heat evolution of blended cements

Predicting early-age temperatures of blended-cement concrete

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