freezethaw durability of concretes with and without
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freezethaw durability of concretes with and without.

Freeze-Thaw Durability of Concretes with and without Class ...

Several mechanisms have been proposed to explain freeze-thaw damage of concretel4l. It generally agrees that the freeze-thaw damage occurs when cement paste freezes and there is no free space within the concrete to relieve internal osmotic and hydraulic pressure. Entrained air voids are

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Freeze-Thaw Durability of Concretes with and without Class ...

The freeze-thaw resistance of concretes was studied. Nine concrete mixes, made with five cements and cement-Class C fly ash combinations, were exposed to freeze-thaw cycling following 110 to 222 days of moist curing. Prior to the freeze-thaw cycling, the specimens were examined by a low-vacuum scanning electron microscope (SEM) for their microstructure.

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Freeze-Thaw Durability of Concrete With and Without Silica ...

The freeze-thaw durability of concrete with and without silica fume was investigated in accordance with the requirements of ASTM Test Method for Resistance of Concrete to Rapid Freezing and Thawing (C 666 Procedure A). The water-cement ratio of all mixes was 0.5, and the

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FREEZE-THAW DURABILITY OF CONCRETES WITH AND WITHOUT

Corpus ID: 135935547. FREEZE-THAW DURABILITY OF CONCRETES WITH AND WITHOUT CLASS C FLY ASH @article{Ouyang1997FREEZETHAWDO, title={FREEZE-THAW DURABILITY OF CONCRETES WITH AND WITHOUT CLASS C FLY ASH}, author={C. Ouyang and J. Lane}, journal={Materials for the New Millennium}, year={1997}, pages={939-948} }

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Freeze-Thaw Durability of Low-Permeability Concrete

Water-binder ratio, cementitious materials, and air entrainment affect the freeze-thaw durability of low-permeability concrete.

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Freeze-Thaw Durability of Concrete - 1st Edition - J ...

Dec 12, 2019  8%  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.

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Freeze-Thaw Resistance - Portland Cement Association

The resistance of concrete to freezing and thawing in a moist condition is significantly improved by the use of intentionally entrained air. The tiny entrained air voids act as empty chambers in the paste for the freezing and migrating water to enter, thus relieving the pressure in the pores and preventing damage to the concrete.

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Freeze/thaw durability of concrete with synthetic fibre ...

Dec 01, 2012  Highlights Four concrete types were tested, plain, air entrained and fibre at 0.9 kg/m 3 and 1.8 kg/m 3. Freeze/thaw protection is afforded with synthetic fibres Plain concrete provided little freeze/thaw resistance Post freeze/thaw durability factors for concrete with air/(76), 0.9 kg/m 3 /(88), and 1.8 kg/m 3 /(85) Concrete with 0.9 kg/m 3 showed a superior performance using compressive ...

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Effect of Superplasticizer Dosage on Mechanical Properties ...

Mar 01, 1996  Title: Effect of Superplasticizer Dosage on Mechanical Properties, Permeability, and Freeze-Thaw Durability of High-Strength Concretes With and Without Silica Fume. Author(s): Richard Gagn, Alain Boisvert, and Michel Pigeon. Publication: Materials Journal. Volume: 93. Issue: 2. Appears on pages(s): 111-120

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Freeze-Thaw Durability of Concretes with and without Class ...

The freeze-thaw resistance of concretes was studied. Nine concrete mixes, made with five cements and cement-Class C fly ash combinations, were exposed to freeze-thaw cycling following 110 to 222 days of moist curing. Prior to the freeze-thaw cycling, the specimens were examined by a low-vacuum scanning electron microscope (SEM) for their microstructure.

Get Price

FREEZE-THAW DURABILITY OF CONCRETE WITH AND WITHOUT

The freeze-thaw durability of concrete with and without silica fume was investigated in accordance with the requirements of ASTM Test Method for Resistance of Concrete to Rapid Freezing and Thawing (C 666 Procedure A). The water-cement ratio of all mixes was 0.5, and the

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[PDF] Freeze Thaw Durability Of Concrete Download eBook ...

Dec 14, 2019  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.

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Enhancing the Freeze-Thaw Durability of Concrete through ...

Enhancing the Freeze-Thaw Durability of Concrete through Ice Recrystallization Inhibition by Poly(vinyl alcohol) ACS Omega . 2020 May 26;5(22):12825-12831. doi: 10.1021/acsomega.0c00555.

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Freeze Thaw Durability of Internally Cured Concrete Made ...

This paper investigates the freeze–thaw durability of internally cured concrete by the use of SAPs. It has been shown that internally cured concretes made using SAP demonstrate good freeze–thaw performance when the concrete is air entrained. When the SAP was used in concrete without air entrainment it did not provide sufficient freeze ...

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Freeze-thaw durability of high strength silica fume concrete

Specimens from 27 batches of concrete with water to cementitious (cement plus silica fume) ratio of 0.25 to 0.32, with and without entrained air, were tested for freeze-thaw durability in accordance with ASTM C666, procedure A (freezing and thawing in water).

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Freeze-Thaw Durability of Air-Entrained Concrete

Mar 21, 2013  Therefore, the freeze-thaw durability of air-entrained concrete is much higher than that of plain concrete. (b) After 200 cycles of freeze-thaw, the weight loss was 0.70, 0.67, and 0.25 percent for C30, C40, and C50 air-entrained concrete, and 2.35 and 3.58 percent for C20 and C25 air-entrained concrete.

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Research Article Freeze-Thaw Durability of Air-Entrained ...

(a) cycles of freeze-thaw (b) cycles of freeze-thaw (c) cycles of freeze-thaw F : Surface of C air-entrained concrete a er , , and cycles of freeze-thaw. 110 100 90 80 70 60 0 100 200 300 400 500 N C20 C25 C30 C40 C50 RDME (%) F : RDME of air-entrained concrete a er di erent cycles of freeze-thaw (%). Hong-Qiang et al. found that the RDME ...

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Effect of Superplasticizer Dosage on Mechanical ... - Concrete

Mar 01, 1996  Title: Effect of Superplasticizer Dosage on Mechanical Properties, Permeability, and Freeze-Thaw Durability of High-Strength Concretes With and Without Silica Fume. Author(s): Richard Gagn, Alain Boisvert, and Michel Pigeon. Publication: Materials Journal. Volume: 93. Issue: 2. Appears on pages(s): 111-120

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Durability Properties of Concrete Supplemented with ...

This paper presents the testing of the durability of concrete where a part of cement was replaced with ground panel cathode ray tube glass (CRT) finer than 63 µm. The percentage of cement replaced with glass is 5%, 10%, 15%, 20%, and 35%, by mass. The highest percent share of mineral admixtures in CEM II (Portland-composiste cement) cement was chosen as the top limit of replacement of cement ...

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Improvement in freeze-thaw durability of recycled ...

Jan 25, 2021  Currently, there are few effective methods for improving the freeze–thaw durability of recycled aggregate (RA) permeable concrete without reducing the strength or permeability. Thus, this study aims to improve the freeze–thaw durability of recycled aggregate permeable concrete without the degradation of strength and permeability.

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(PDF) Improvement in freeze-thaw durability of recycled ...

the freeze–thaw durability of recycled aggregate permeable concrete without the degradation of strength and permeability. Accordingly, two silane emulsion modification methods, namely the ...

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Durability Evaluation of Concrete with Multiadmixtures ...

Jun 15, 2021  When the air content of concrete is 2.5%, 4.5%, and 6.5%, with the increase of salt freeze-thaw cycles, the relative dynamic modulus of concrete is basically stable at 90%, while for the concrete without AEA, at 30 salt freeze-thaw cycles, the

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Freeze-Thaw Durability of Concrete Coated With Linseed Oil

Jun 01, 1990  The relative durability of air-entrained concrete with and without boiled linseed oil coating was evaluated using the rapid freeze-thaw method of ASTM C 666, Procedure A, by measuring the reduction in dynamic modulus and weight loss of the

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FREEZE-THAW DURABILITY OF CONCRETES WITH AND WITHOUT

Corpus ID: 135935547. FREEZE-THAW DURABILITY OF CONCRETES WITH AND WITHOUT CLASS C FLY ASH @article{Ouyang1997FREEZETHAWDO, title={FREEZE-THAW DURABILITY OF CONCRETES WITH AND WITHOUT CLASS C FLY ASH}, author={C. Ouyang and J. Lane}, journal={Materials for the New Millennium}, year={1997}, pages={939-948} }

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Freeze-thaw durability of air-entrained concrete

The present study explored the durability of concrete made with air-entraining agent subjected to 0, 100, 200, 300, and 400 cycles of freeze-thaw. The experimental study of C20, C25, C30, C40, and C50 air-entrained concrete specimens was completed according to "the test method of long-term and durability on ordinary concrete" GB/T 50082-2009.

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[PDF] Freeze Thaw Durability Of Concrete Download eBook ...

Dec 14, 2019  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.

Get Price

Freeze-Thaw Durability of Concrete Coated With Linseed Oil

Jun 01, 1990  The relative durability of air-entrained concrete with and without boiled linseed oil coating was evaluated using the rapid freeze-thaw method of ASTM C 666, Procedure A, by measuring the reduction in dynamic modulus and weight loss of the

Get Price

Freeze Thaw Durability of Internally Cured Concrete Made ...

This paper investigates the freeze–thaw durability of internally cured concrete by the use of SAPs. It has been shown that internally cured concretes made using SAP demonstrate good freeze–thaw performance when the concrete is air entrained. When the SAP was used in concrete without air entrainment it did not provide sufficient freeze ...

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Freeze-Thaw Durability of Concrete with Ground Waste Tire ...

Jan 01, 1997  To evaluate the freeze-thaw durability of these “rubcrete” mixtures, freeze-thaw tests in accordance with ASTM C666 Procedure A and microscopic analyses in accordance with ASTM C457 Procedure B, were conducted. Results show that the rubcrete mixtures with 10 and 15 percent rubber by weight of cement are freeze-thaw durable.

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What Is Freeze-Thaw and How Does It Affect Concrete ...

High-strength concrete helps blocks resist structural damage from freeze-thaw processes. Smaller aggregates are known to perform better in freeze-thaw conditions. A well-made piece of concrete can help keep freeze-thaw damage at bay, especially in the use of pavers. The environment, of course, can also influence freeze-thaw effects on concrete.

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Durability Properties of Concrete Supplemented with ...

2 天前  positive effect on the compressive strength of concrete in terms of its increase without compromis-ing the durability of concrete. The results obtained by experimental testing unequivocally show that concrete mixtures made with partial replacement (up to 15%) of cement with finely ground CRT glass have the same freeze-thaw resistance ...

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Durability Properties of Concrete Supplemented with ...

This paper presents the testing of the durability of concrete where a part of cement was replaced with ground panel cathode ray tube glass (CRT) finer than 63 µm. The percentage of cement replaced with glass is 5%, 10%, 15%, 20%, and 35%, by mass. The highest percent share of mineral admixtures in CEM II (Portland-composiste cement) cement was chosen as the top limit of replacement of cement ...

Get Price

Durability Evaluation of Concrete with Multiadmixtures ...

Jun 15, 2021  When the air content of concrete is 2.5%, 4.5%, and 6.5%, with the increase of salt freeze-thaw cycles, the relative dynamic modulus of concrete is basically stable at 90%, while for the concrete without AEA, at 30 salt freeze-thaw cycles, the

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Enhancing the Freeze-Thaw Durability of Concrete through ...

These findings contribute to new insights on the freeze-thaw damage mechanism, and more importantly, we disclose a new direction for the design of concrete with excellent freeze-thaw resistance.", author = "Zhengyao Qu and Shuaiqi Guo and Sproncken, {Christian C.M.} and Rom{\`a} Sur{\'i}s-Valls and Qingliang Yu and Voets, {Ilja K.}",

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Durability of concrete containing GGBS when exposed to ...

Sep 20, 2016  The results indicate that all concrete mixes with air entrainment showed better freezing and thawing resistance than without air entrainment. The study demonstrated the freeze-thaw resistance of CEM II/A-L and GGBS combinations at 30%, 50% and 70% after 200 cycles of freezing and thawing resulting in durable concrete for XF exposure class.

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Freeze–thaw resistance and transport properties of high ...

Abstract The aim of this study is to evaluate the effect of high-volume fly ash on some durability characteristics of roller compacted concrete (RCC). In addition to a control mixture without fly ash, two different series of mixtures were prepared by partial replacement of either cement or aggregate with fly ash. The mixtures were designed by a maximum density method. A total of 28 mixtures ...

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Freeze-Thaw Resistance - Portland Cement Association

Freeze-Thaw Resistance. When water freezes, it expands about 9 percent. As the water in moist concrete freezes it produces pressure in the pores of the concrete. If the pressure developed exceeds the tensile strength of the concrete, the cavity will dilate and rupture. The accumulative effect of successive freeze-thaw cycles and disruption of ...

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