Water Absorption and Critical Degree of Saturation Relating to Freeze-Thaw Damage in Concrete Pavement Joints

Li, Wenting; Pour-Ghaz, Mohammad; Castro, Javier; Weiss, Jason

doi:10.1061/(asce)mt.1943-5533.0000383

Cited by 223 publications

(129 citation statements)

References 26 publications

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“…The surface coatings are used on concrete surfaces aesthetically important and highly exposed to public view. They are generally concrete can improve its freeze-thaw durability (Li et al 2012;Litvan 1992) and resistance to alkali-aggregate reactions (Filice, Wong 2001). Almusallam et al (2003) and Moon et al (2007) observed that surface coatings substantially improved the freeze-thaw resistance of concrete due to reduced water absorption.…”

Section: Classification Of Sealers/coatingsmentioning

confidence: 99%

“…Li et al (2012) discussed the influence of water on freezethaw damage in concrete; they showed that when the degree of saturation due to water absorption exceeds 86-88%, the freeze-thaw damage is inevitable with or without entrained air even with very few freeze-thaw cycles. Moreover, water combined with certain deleterious agents such chloride ions and carbon di-oxide causes corrosion of steel reinforcement in concrete structures (Charles et al 2011;Melchers, Li 2009).…”

Section: Introductionmentioning

confidence: 99%

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Water Vapor Transmission and Waterproofing Performance of Concrete Sealer and Coating Systems

Soudki

2015

Journal of Civil Engineering and Management

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Abstract. This paper reports the water vapor transmission and waterproofing performance of a silane-based penetrating sealer (PS), two cementitious coatings (CC1 and CC2), and a polymeric coating (PC). The sealer and coating products were applied on 100-mm concrete cubes. In total, fifteen concrete cubes including the control specimens were prepared.The treated concrete cubes were tested to determine the ability of the selected products to improve waterproofing and to transmit water vapor. The correlation between water vapor transmission and waterproofing performance was also examined. Experimental results revealed that the cementitious coating CC2 had the lowest degree of water vapor transmission but the highest degree of waterproofing performance. In contrast, the highest degree of water vapor transmission but the lowest degree of waterproofing performance were observed for the cementitious coating CC1. The penetrating sealer PS provided greater water vapor transmission but lower waterproofing ability than the polymeric coating PC and the cementitious coating CC2. The best-performing coating with regard to water vapor transmission and waterproofing was the polymeric coating PC. Furthermore, the water vapor transmission and waterproofing performance of the sealer and coating systems were strongly correlated; this suggests that one of these two properties can be predicted by testing the other.

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Section: Classification Of Sealers/coatingsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Water Vapor Transmission and Waterproofing Performance of Concrete Sealer and Coating Systems

Soudki

2015

Journal of Civil Engineering and Management

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“…In countries with a continental climate, concrete is often cast in the summer months -under conditions of high temperature and low humidity -and is subject to freeze-thaw cycles during winter. This scenario can worsen if de-icing salts are added (5-7), such as the cases of the pillars and slabs of road bridges (8,9).…”

Section: Introductionmentioning

confidence: 99%

The influence of the curing conditions of concrete on durability after freeze-thaw accelerated testing

Al‐Assadi¹,

Casati²,

Gálvez³

et al. 2015

Mater. construcc.

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This work relates the curing conditions of concrete with the damage caused by rapid freeze-thaw cycles (ASTM C 666). The "potential" durability of concrete after testing is also studied. In countries with a continental climate, the curing of concrete in summer is performed under high-temperature and low-humidity conditions, and during the winter the concrete undergoes freezing and thawing. This paper shows the experimental results of the behaviour of concrete specimens cured under climatic summer conditions and then subjected to freeze-thaw cycles. Curing of the specimens includes conditions of good and bad practice in relation to wetting and protection of the concrete. Mechanical properties, cement hydration, volume and pore sizes, oxygen permeability, chloride diffusion and water penetration under pressure tests of the concrete are assessed. These tests were performed before and after the application of the freeze-thaw cycles. Statistical analysis of the correlation among variables is also included. RESUMEN: Influencia de las condiciones de curado del hormigón en su durabilidad tras los ensayos acelerados de ciclos hielo-deshielo.Este trabajo relaciona las condiciones de curado del hormigón con los daños causados por ciclos hielo-deshielo (ASTM C 666). Estudia la durabilidad "potencial" del hormigón dañado por este ensayo. En países con clima continental, el curado del hormigón en verano se realiza con alta temperatura y baja humedad, y durante el invierno sufre condiciones de hielo-deshielo. Se presentan los resultados experimentales de probetas de hormigón curadas bajo condiciones climáticas del verano y luego sometidas a ciclos hielodeshielo. El curado de las probetas incluye condiciones de buenas y malas prácticas en relación con el curado del hormigón. Se miden las propiedades mecánicas, grado de hidratación, volumen de poros y distribución de tamaños, permeabilidad al oxígeno, penetración de agua bajo presión y coeficiente de difusión de cloruros antes y después de la aplicación de los ciclos de hielo-deshielo. Se incluye un estudio estadístico para analizar la correlación entre las variables.

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“…The air voids are usually larger than the capillary pores [10 nm to 10 mm (Mindess, Young, & Darwin, 2003)] of the cementitious systems, and ideally are isolated from each other but connected with the capillary pore systems of the cementitious matrix (Litvan, 1988;Sutter, Van Dam, & Thomas, 2007). Entrained air voids that remain unsaturated in service can release pressure for the expansive ice formation under the freezing temperature (Fagerlund, 1977;Farnam, Bentz, Sakulich, Flynn, & Weiss, 2014;Li, Pour-Ghaz, Castro, & Weiss, 2012;Pinto & Hover, 2001). …”

Section: Introductionmentioning

confidence: 99%

Saturation of Air Entrained Voids and Its Implication on the Transport of Ionic Species in Concrete

Bu¹,

Weiss²

2014

Proceedings of the 4th International Conference on the Durability of Concrete Structures

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Air entrainment is commonly used to improve the durability of concrete materials exposed to freezing and thawing. While the influence of air voids on freeze/thaw damage and salt scaling is frequently studied, the influence of entrained air voids on ionic transport has been studied less frequently. Since ionic transport in concrete materials relies on pore fluid as the medium of conduction, only saturated or partially saturated air voids participate in the transport processes. This paper discusses the conditions under which air voids could become saturated. Specifically, the saturation condition of entrained air voids in laboratory tests and in service is discussed. This paper compares the results of steady and non-steady state migration tests on concrete specimens when air voids are saturated and when air voids are primarily empty. The implications of the observed difference are discussed to provide a better understanding of the direct application of laboratory test results to predict the service life of concrete materials in the field. The saturation of air voids is observed to also influence the electrical resistivity of concrete materials.

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Water Absorption and Critical Degree of Saturation Relating to Freeze-Thaw Damage in Concrete Pavement Joints

Cited by 223 publications

References 26 publications

Water Vapor Transmission and Waterproofing Performance of Concrete Sealer and Coating Systems

Water Vapor Transmission and Waterproofing Performance of Concrete Sealer and Coating Systems

The influence of the curing conditions of concrete on durability after freeze-thaw accelerated testing

Saturation of Air Entrained Voids and Its Implication on the Transport of Ionic Species in Concrete

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