Effect of thermal cycling on the properties of high-performance concrete: Microstructure and mechanism

Liu, Anmin; Huang, Haihong; Wang, Yue; Zhao, Guiping

doi:10.1016/j.conbuildmat.2020.118310

Cited by 28 publications

(6 citation statements)

References 34 publications

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“…[34], for calculation of thermal stresses of pavements have been established mainly on the basis of a linearly distributed temperature change over the thickness of the plate. Furthermore, experimental studies have shown that thermally-induced degradation of cementitious materials, resulting in the decrease of the elastic modulus and the compressive strength, originates from microstructural cracking [35][36][37][38]. This has motivated the following analysis of the thermal response of concrete pavements across several scales of observation.…”

Section: Temperature Field Of Transient Heat Conductionmentioning

confidence: 99%

On the added value of multi-scale modeling of concrete

Zhang

Binder

Wang

et al. 2022

Front. Struct. Civ. Eng.

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This review of the added value of multi-scale modeling of concrete is based on three representative examples. The first one is concerned with the analysis of experimental data, taken from four high-dynamic tests. The structural nature of the high-dynamic strength increase can be explained by using a multi-scale model. It accounts for the microstructure of the specimens. The second example refers to multi-scale thermoelastic analysis of concrete pavements, subjected to solar heating. A sensitivity analysis with respect to the internal relative humidity (RH) of concrete has underlined the great importance of the RH for an assessment of the risk of microcracking of concrete. The third example deals with multi-scale structural analysis of a real-scale test of a segmental tunnel ring. It has turned out that multi-scale modeling of concrete enables more reliable predictions of crack opening displacements in tunnel segments than macroscopic models taken from codes of practice. Overall, it is concluded that multi-scale models have indeed a significant added value. However, its degree varies with these examples. In any case, it can be assessed by means of a comparison of the results from three sources, namely, multi-scale structural analysis, conventional structural analysis, and experiments.

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Section: Temperature Field Of Transient Heat Conductionmentioning

confidence: 99%

On the added value of multi-scale modeling of concrete

Zhang

Binder

Wang

et al. 2022

Front. Struct. Civ. Eng.

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“…Researches using nanotechnology to improve thermal properties are in second place among collected data. The development of nanotechnology materials that can improve thermal properties will allow using a great range of materials in different regions, especially those with more extreme thermal conditions, such as very cold or hot areas (67). It is possible to apply Bio-PCMs in tropicals (68) or cold regions (69), developing the construction industry.…”

Section: Thermal Resistancementioning

confidence: 99%

Nanotechnology in Concrete: a Bibliometric Review

Costa¹,

Gomes²,

Thomas³

et al. 2021

BJEDIS

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This review intends to show how nanotechnology is currently being applied in concrete. Both organic and inorganic species can be used as nanoagents, producing materials with improved properties, promoting economic and environmental gains by extending the materials' lifetime. Thus, this paper covers nanotechnology applications to improve mechanical, thermal, and corrosive properties of concrete and shows bibliometric results, proving the increase of interest in these fields. Results have shown that organic agents are more commonly used than inorganic ones, and that nanotechnology is applied mainly to improve mechanical and thermal properties.

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“…Environmental thermal fatigue (ETF) of concrete refers to the deterioration that occurs in concrete due to a repeated variation in temperature over an extended duration 1 . Typically, the temperature of concrete surfaces during daytime can increase to 60–70 °C even when the ambient atmospheric temperatures is around 30 °C 2 . Further, the concrete temperatures notice a significant change in night or during rainy seasons causing a thermal shock.…”

Section: Introductionmentioning

confidence: 99%

Effects of aircraft operating fluids and environmental thermal fatigue on fly ash and steel slag based cementitious composites

Tangirala,

Rawat,

Lahoti

2024

Sci Rep

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This paper investigates the performance of concrete incorporating high-volume fly ash (HVFA) and steel slag aggregates against the detrimental effects of combined cycles of environmental thermal fatigue and exposure to leaked aircraft fluids. A total of 128 cubes and 90 prisms were cast for five mixes and exposed to 60, 120, 180, 240 and 300 combined cycles. The results demonstrate the positive effect of utilization of HVFA which reduces the total amount of portlandite available in the system. The SS aggregates demonstrate a strong interlocking with the surrounding matrix and supply the necessary portlandite for continued pozzolanic reaction. However, their reaction with aircraft fluids causes significant degradation to flexural strength initially, which is redeemed by pozzolanic reaction at a later stage. Hybrid basalt and polypropylene fibres were successful in enhancing the flexural strength and reducing the cracking. The mercury intrusion porosimetry revealed a reduction in pore volume because of HVFA. Scanning electron microscopy and differential scanning calorimetry were also employed to uncover the underlying mechanisms of damage and assess the performance of the cementitious composite.

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Effect of thermal cycling on the properties of high-performance concrete: Microstructure and mechanism

Cited by 28 publications

References 34 publications

On the added value of multi-scale modeling of concrete

On the added value of multi-scale modeling of concrete

Nanotechnology in Concrete: a Bibliometric Review

Effects of aircraft operating fluids and environmental thermal fatigue on fly ash and steel slag based cementitious composites

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