Effect of Curing and Composition on the Properties of the Outer Skin of Concrete

Bentur, A.; Jaegermann, C.

doi:10.1061/(asce)0899-1561(1991)3:4(252)

Cited by 34 publications

(4 citation statements)

References 2 publications

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“…5.6). Similar findings were obtained by Khan and Ayers (1993) and Bentur and Jaegermann (1991), who concluded that the adverse effect of inadequate curing conditions at the early age is more pronounced in the case of concrete permeability than in the case of strength. It should be noted that with an exception of FTB concrete compressive strength was tested on 102×203 mm cylinders.…”

Section: Fresh Concrete Propertiessupporting

confidence: 77%

High-Performance Concrete Bridge Decks: A Fast-Track Implementation Study Volume 2: Materials

Radlinski¹,

Olek²

2010

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IntroductionConcrete bridge decks are inherently exposed to harsh environment. They are known to undergo degradation due to numerous distresses, of which the most common are corrosion of reinforcement (caused by ingress of chloride through bulk concrete), freeze-thaw damage, shrinkage cracking (aggravating both corrosion and freeze-thaw problems) and surface scaling due to deicing salts.Recently, high performance concrete (HPC) has become widely utilized in the applications where severe environment leads to premature deterioration. The premise behind the development of HPC was to address the durability issues typical of normal concrete. HPC almost always implies incorporation of mineral admixtures, such as fly ash (FA) or silica fume (SF). These materials are added to concrete for variety of reasons, of which the most important is improvement (compared to plain ordinary portland cement (OPC) concrete) of certain durabilityrelated properties. However, there are also some downsides of utilizing them in concrete. For example, fly ash is known to reduce the early age strength and early age resistance to chloride-ion penetration, as well as resistance to salt scaling and carbonation. Furthermore, fly ash concrete has been reported to be fairly sensitive to curing conditions compared to plain cement concrete. The shortcomings of incorporating silica fume, on the other hand, include increased susceptibility to shrinkage cracking and potentially reduced resistance to freezing and thawing.In the view of the aforementioned side effects associated with the use of fly ash or silica fume in binary mixtures, the ternary cementitious systems have been introduced as a potentially viable solution to address those durability issues. Superior properties of this kind of cementitious systems are commonly attributed to so-called synergistic effect taking place when both pozzolanic materials are utilized. The intuitively obvious benefit of the use of OPC/FA/SF mixtures is that the presence of fly ash in concrete compensates for the deficiencies of silica fume, and vice versa. For example, FA offsets the increase in water demand, heat of hydration and alkalinity of pore solution resulting from addition of SF. On the other hand, SF compensates for the low early age strength and sensitivity to curing (with respect to development of both mechanical and durability-related properties of FA concrete). From the economical perspective, a relatively low cost of FA counterbalances higher cost of SF. Although a fairly large amount of research has been conducted to evaluate the properties of ternary cementitious mixtures containing fly ash and silica fume, relatively little was done with the emphasis on the durability-related issues encountered when these binder systems are used in the bridge deck concrete. Up to date, no data exists on the actual performance of ternary concrete containing class C fly ash and silica fume in bridge decks.The purpose of this research was to examine the applicability of ternary binder systems containing ordinary port...

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Section: Fresh Concrete Propertiessupporting

confidence: 77%

High-Performance Concrete Bridge Decks: A Fast-Track Implementation Study Volume 2: Materials

Radlinski¹,

Olek²

2010

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“…To establish this relationship, a database of available accelerated carbonation test results for CC and HVFAC was formed. This database contained results from 15 studies for CC (Atis, 2003;Bouzoubaâ et al, 2010;Bucher et al, 2017;Carević et al, 2019;Dhir et al, 2007;Durán-Herrera et al, 2015;Katz, 2003;Khunthongkeaw et al, 2006;Kuosa et al, 2008;Leemann and Moro, 2017;Ohga and Nagataki, 1989;Pedro et al, 2015;Ribeiro et al, 2009;Shah and Bishnoi, 2018) and 8 studies for HVFAC (Atis, 2003;Bentur and Jaegermann, 1991;Bouzoubaâ et al, 2010;Carević et al, 2019;Ignjatović et al, 2017b;Jia et al, 2012;Ribeiro et al, 2003). A total of 115 carbonation depth measurements for CC and 59 for HVFAC were collected for samples with compressive strength ranging from 11.5 to 67.0 MPa (measured on a standard cylinder sample Ø150•300 mm).…”

Section: Carbonation Depth Modelmentioning

confidence: 99%

The role of service life in Life Cycle Assessment of concrete structures

Marinković

Carević

Dragaš

2021

Journal of Cleaner Production

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“…Ensuring low permeability of the so called concrete cover is of prime importance since it constitutes the first barrier to reducing the attack by aggressive agents. Transport properties and permeability of concrete depend on the mix design and curing conditions [1][2][3][4]. The durability of concrete, and in particular self-consolidating concrete (SCC), can vary with the rheological properties of the concrete that affect the consolidation, bleeding, surface settlement, segregation, as well as stability of entrained air [5,6].…”

Section: Introductionmentioning

confidence: 99%

Influence of formwork material on transport properties of self-consolidating concrete near formed surfaces

Aïssoun

Gallias

Khayat

2017

Construction and Building Materials

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Effect of Curing and Composition on the Properties of the Outer Skin of Concrete

Cited by 34 publications

References 2 publications

High-Performance Concrete Bridge Decks: A Fast-Track Implementation Study Volume 2: Materials

High-Performance Concrete Bridge Decks: A Fast-Track Implementation Study Volume 2: Materials

The role of service life in Life Cycle Assessment of concrete structures

Influence of formwork material on transport properties of self-consolidating concrete near formed surfaces

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