Phase distribution and microstructural changes of self-compacting cement paste at elevated temperature

Ye, G.; Liu, X.; Schutter, Geert De; Taerwe, Luc; Vandevelde, Paul

doi:10.1016/j.cemconres.2007.02.011

Cited by 108 publications

(41 citation statements)

References 8 publications

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“…This can be only due to the layer composition but also to the greater w/c use in the preparation of these mixes. As it has been also reported in the literature (Ye et al 2007;Bakhtiyari et al 2010;Kodur and Phan 2007) both are the cause of a greater porosity and consequently a potential better behavior in front of fire is expected.…”

Section: Preliminary Quality Control Of Samplessupporting

confidence: 55%

“…It is a property that prevents or retards the passage of excessive heat that has special significance for SCCC. As showed in Boström (2002), Ye et al (2007) or Bakhtiyari et al (2010), SCCC have different behaviour and microstructure at high temperature than conventional and high strength vibrated concrete, being also for same strength and moisture content more sensitive to spalling due to the filling powder and the powder type (i.e. limestone or quartz filler).…”

Section: Some Theoretical Considerations Adopted For the Fgsccc Designmentioning

confidence: 95%

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Exploring the Potential of the Functionally Graded SCCC for Developing Sustainable Concrete Solutions

Río

Duc

Nguyen

2015

ACT

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The feasibility of using layered-Functionally Graded Self Compacting Cement Composite (FGSCCC) for precast shield-tunnel segments, in harmony with present concrete industry sustainability trend, is presented herein. Limestone powder-type Self-Compacting Cement Composites (SCCC) either with silica fume (SiF) or with SiF and steel fibres (SF) were formulated for the watertight layer. While, SCCC with polypropylene fibres (PPF) or light weight aggregates and SF (LWA+SF) were used for the fire-resistant ones. Besides, a high strength SCCC (HS-SCCC) was considered for structural layers and monolithic samples. Layer composition influence and interlayer robustness on the structural element properties were evaluated. Experiments showed that the FGSCCCs are more effective than the HS-SCCC solutions in front of water, chloride, carbonation, fire or in terms of residual strength. Thanks to its precise spatial material arrangement, the effect of fire or the risk of steel reinforcement corrosion substantially decreases. The residual compressive strength, of FGSCCC specimens with LWA+SF layers, slightly decreases compared to that with PPF layers. Furthermore, they showed the increase of toughness of these specimens. Although none sharp failure at interface was observed, the results pointed out the necessity of considering other different effective parameters for validating the significance of casting process based on rheology.

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Section: Preliminary Quality Control Of Samplessupporting

confidence: 55%

Section: Some Theoretical Considerations Adopted For the Fgsccc Designmentioning

confidence: 95%

Exploring the Potential of the Functionally Graded SCCC for Developing Sustainable Concrete Solutions

Río

Duc

Nguyen

2015

ACT

View full text Add to dashboard Cite

show abstract

“…(7)(8)(9)(10), and from the theory of the activated complex (transition state) of Eyring [24,25], the following general equation may be written: (17) Where: е = 2.7183 is the Neper number; k B -Boltzmann constant; h -Plank constant, and T p is the peak temperature of DTG curve.…”

Section: Resultsmentioning

confidence: 99%

“…However, Portland Slag Cement has been found to be compatible with all the superplasticizers. Ye et al [8] reported on the properties of Self-compacting when it is exposed to elevated temperatures. Fire test has shown differences between high performance concrete and traditional concrete at elevated temperature.…”

Section: Introductionmentioning

confidence: 99%

Understanding the Mechanism of Decomposition Reactions of Neat and Superplasticized ordinary Portland Cement Pastes Using Thermal Analysis

Gad¹,

Habib²,

Mousa³

2017

Epitoanyag - JSBCM

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“…A number of studies have shown that an increase in temperature in cement pastes causes the release of physically absorbed water, chemically bonded water and the decomposition of hydration products [10,11]. A wellhydrated cement paste generally consists of calcium silicate hydrate, calcium hydroxide and calcium sulphate aluminate hydrate.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Elevated Temperature on the Lightweight Aggregate Concrete

Ibrahim

2017

KJAR

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Abstract:The use of lightweight concrete has become widely spread in concrete structures in the last years. Fire can be considered as a destructive hazard that attack concrete structures. In this research the effect of elevated temperature on lightweight aggregate concretes is studied. For this purpose, 81 cube shaped specimens were prepared from three different lightweight aggregate concrete mixes. After moist curing periods for 3, 7 and28 days, the specimens were subjected to ambient and elevated temperatures of 450⁰C and 650⁰C for 2hrs.The weight of the specimens before and after exposure to elevated temperatures was determined and the residual strength results for the specimens were compared. The results showed that, the elevated temperature induces a decrease in strength and significant weight losses in lightweight aggregate concrete.

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Phase distribution and microstructural changes of self-compacting cement paste at elevated temperature

Cited by 108 publications

References 8 publications

Exploring the Potential of the Functionally Graded SCCC for Developing Sustainable Concrete Solutions

Exploring the Potential of the Functionally Graded SCCC for Developing Sustainable Concrete Solutions

Understanding the Mechanism of Decomposition Reactions of Neat and Superplasticized ordinary Portland Cement Pastes Using Thermal Analysis

The Effect of Elevated Temperature on the Lightweight Aggregate Concrete

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