Influences of freeze–thaw cycle and curing time on chloride ion penetration resistance of Sulphoaluminate cement concrete

Zhao, Jun; Cai, Gaochuang; Gao, Danying; Zhao, Shunbo

doi:10.1016/j.conbuildmat.2013.11.110

Cited by 57 publications

(15 citation statements)

References 11 publications

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“…As shown in Fig. 3, similar to the research results reported by Zhao et al (2014), these two concretes with same w/c ratio present almost same long-term compressive strength such as the plotted ones at 56 days. Besides, the results in this figure confirmed that the development ratio of the compressive strength of SACC is faster than PCC at early stages, for example, the strength at 3 rd day can reach 0.65~0.75 times of the one at 56 th day.…”

Section: Compressive Strength Developmentsupporting

confidence: 79%

“…In this section, the main utilizations of SAC can be summarized, as follows, Rapid repairing engineering-the high-early-strength series SACs not only have excellent strength at early stage, but also can present a good strength development at later stage as well (Xin et al, 2005;Bernardo et al, 2006;Qian et al, 2008;Zhao et al, 2011aZhao et al, , 2014. Besides, the micro-expansion property of SACC also makes this cement can find its application space in rapidrepair engineering, since it can fill effectively and rapidly internal micro-cracks of damaged concrete (Lu et al, 1996).…”

Section: Utilization Of Sac In China-a Short Reviewmentioning

confidence: 99%

“…As a low heat-low carbon-rapid hardening cement, Sulphoaluminate cement (SAC) has been used increasingly in building and infrastructural structures at cold region in China and specific engineering structures due to its extraordinary required properties such as high early ages strength and freezing resistance, low permeability and alkalinity and so on (Yan, 1993;Kasselouri et al, 1995;Wang et al, 1999;Andac and Glasser, 1999;Xin et al, 2000Xin et al, , 2005Bernardo et al, 2006;Zhou et al, 2006;Qian et al, 2008;Chang et al, 2009;Quilin, 2011;Zhao et al, 2011aZhao et al, , 2011bZhao et al, , 2014. Besides, due to the main row burning materials of SAC is low grade Bauxite, the carbon dioxide emission from SAC production is lower than PC ones.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Application of sulphoaluminate cement to repair deteriorated concrete members in chloride ion rich environment-A basic experimental investigation of durability properties

Cai

Zhao

2016

KSCE J Civ Eng

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This paper presents a basic experimental investigation of the durability properties of Sulphoaluminate cement concrete (SACC) and Portland Cement Concrete (PCC). It is to discuss the potential application of Sulphoaluminate cement towards the repair of deteriorated concrete members in chloride ion-rich environment such as coastal engineering, using a SACC repair layer with higher strength than original damaged concrete. The chloride-related durability properties of SACCs were comprehensively studied through some experiments including concrete internal chloride ion content test, chloride ion migration test, X-ray diffraction analysis, scanning electron microscopy and pore structure analysis, when compared with the results of PCCs that have same mix proportion and curing conditions. The analyses and comparisons presented in this paper verified the SACC repair layer has high early strength and chloride-related durability which will effectively improve the capacity of damaged concrete to resist chloride ion penetration. When without any admixtures, compared with PCCs' results, SACCs can provide more compactness hardened internal structures, more micro fillers between internal cracks and more favorable hydration products to bond/resist chloride ions, as well as can also provide lower porosity and more winding pore passageway to resist and postpone the transportation of chloride ion in the concretes. Based on the investigation, the chemical and physical mechanisms of SACC were discussed.

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Section: Compressive Strength Developmentsupporting

confidence: 79%

Section: Utilization Of Sac In China-a Short Reviewmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Application of sulphoaluminate cement to repair deteriorated concrete members in chloride ion rich environment-A basic experimental investigation of durability properties

Cai

Zhao

2016

KSCE J Civ Eng

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“…Consequently, the initial curing conditions had a substantial impact on chloride ion penetration during early exposure to a chloride environment. After longer exposure periods, the effect of initial curing on chloride ion penetration was insignificant (42). The gas permeability constant before the freezingthawing test (see Figure 17) shows values in accordance with the porosity assessed by MIP (see Figure 9), with the values of C30 being greater than the ones of C45.…”

Section: Durability Tests Before and After Freeze-thaw Cyclessupporting

confidence: 57%

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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“…And the use of sulfate resisting Portland cement with low C 3 A content becomes ineffective to preserve cementitious materials against the thaumasite form of sulfate attack [9]. Sulphoaluminate cement, being completely different from Portland cement in mineral composition, has been used increasingly in concrete structures constructed in winter, especially in hydraulic engineering and structure remedial engineering [10][11][12], and there are few published studies concerning the thaumasite form of sulfate attack of this cement. Therefore, this paper presents experimental results related to the effect of cement type and water-to-cement ratio on the resistance to thaumasite sulfate attack of mortars containing a limestone filler.…”

Section: Introductionmentioning

confidence: 99%

Influence of Cement Type and Water-to-Cement Ratio on the Formation of Thaumasite

Zhang

2017

Advances in Materials Science and Engineering

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Cement mortar prisms were prepared with three different cement types and different water-to-cement ratios plus 30% mass of limestone filler. After 28 days of curing in water at room temperature, these samples were submerged in 2% magnesium sulfate solution at 5 ∘ C and the visual appearance and strength development for every mortar were measured at intervals up to 1 year. Samples selected from the surface of prisms after 1-year immersion were examined by X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy. The results show that mortars with sulfate resisting Portland cement (SRC) or sulphoaluminate cement (SAC) underwent weaker degradation due to the thaumasite form of sulfate attack than mortars with ordinary Portland cement (OPC). A lower water-to-cement ratio leads to better resistance to the thaumasite form of sulfate attack of the cement mortar. A great deal of thaumasite or thaumasite-containing materials formed in the OPC mortar, and a trace of thaumasite can also be detected in SRC and SAC mortars. Therefore, the thaumasite form of sulfate attack can be alleviated but cannot be avoided by the use of SAC or SRC.

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Influences of freeze–thaw cycle and curing time on chloride ion penetration resistance of Sulphoaluminate cement concrete

Cited by 57 publications

References 11 publications

Application of sulphoaluminate cement to repair deteriorated concrete members in chloride ion rich environment-A basic experimental investigation of durability properties

Application of sulphoaluminate cement to repair deteriorated concrete members in chloride ion rich environment-A basic experimental investigation of durability properties

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

Influence of Cement Type and Water-to-Cement Ratio on the Formation of Thaumasite

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