Energy-Efficient Approach to Cold-Weather Concreting

Barna, Lynette A.; Seman, Peter M.; Korhonen, Charles J.

doi:10.1061/(asce)mt.1943-5533.0000262

Cited by 37 publications

(11 citation statements)

References 3 publications

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“…http://www.claisse.info/Proceedings.htm These practices entail significant costs due to the requirements of energy consumption, enclosure materials, and quality control by skilled manpower. The required cost to thermally protect concrete during construction from freezing has been recently estimated at one billion dollars per year (Barna et al, 2011). Therefore, in cold regions, construction seasons of concrete infrastructure are typically limited to five months (from May to September) leading to busy construction summer periods, delay in repair schedules and significant socioeconomic losses.…”

Section: Fifth International Conference On Sustainable Construction Mmentioning

confidence: 99%

Performance of nano-modified concrete under freezing and low temperatures

Yasien¹,

Abayou²,

Bassuoni³

2019

Sustainable Construction Materials and Technologies (SCMT)

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In this study four mixtures were prepared at a constant w/b of 0.32 with different combinations of general use cement, Class F fly ash and nano-silica sol, targeting applications in cold weather. All mixtures incorporated calcium nitrate-nitrite solution as an antifreeze admixture. The mixtures were mixed, cast and cured using two different regimes: a constant freezing temperature of-5ºC, and cyclic freezing-low temperatures (-5/5ºC), without heating or insulation during the curing period. The performance of mixtures was assessed by setting time, compressive strength and mercury intrusion porosimetry tests. In addition, scanning electron microscopy was performed to characterize the microstructure of concrete. The incorporation of nanosilica significantly enhanced the overall performance of concrete, even with fly ash, indicating its promising use for cold weather applications in late fall and early spring periods, without the need for conventional heating and insulation practices.

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Section: Fifth International Conference On Sustainable Construction Mmentioning

confidence: 99%

Performance of nano-modified concrete under freezing and low temperatures

Yasien¹,

Abayou²,

Bassuoni³

2019

Sustainable Construction Materials and Technologies (SCMT)

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“…Figure 1, b and c, illustrates the flow and early-age compressive strength results of all 22 mixes. Mixes with flow values less than 0.75 were not considered because such values were too low to pass the main flow requirement (15). Among 22 mixes, only three mixes had flow values less than 0.75, and seven had very high flow values over 1.0.…”

Section: Development Of Antifreeze Grout Mortar Initial Screeningmentioning

confidence: 99%

Development of Innovative Antifreeze Grout Mortar for Anchor Applications in Cold Regions

Lin

Liu

Zhang

2015

Transportation Research Record

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Ground anchors and anchored systems have been successfully used as cost-effective soil supporting systems for highway safety considerations for decades. However, some unique challenges exist when these systems are used in Alaska and other cold regions. One challenge associated with anchor installation could be potential thawing of the warm permafrost as a result of grout mortar hydration; this thawing might undermine the capacity of the anchor. Therefore, this study aimed to develop an innovative antifreeze grout mortar for successful application of anchors in cold regions. A testing matrix of different combinations of chemical admixtures was developed, and workability, early-age strength, and freezing point of the mix water of mixes were evaluated to determine the optimum mix designs. Test results showed that the antifreeze grout mortar achieved three primary objectives: (a) it depressed the freezing point of the mix water available for the hydration process, (b) it accelerated the early-age strength gain at low temperature, and (c) it enhanced excellent flowability for grouting. The laboratory results were further validated through fieldwork in a test section located inside the Cold Region Research and Engineering Laboratory permafrost tunnel.

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“…Khatib [8] studied the effect of low-temperature curing on the compressive strength of metakaolin concrete and found that the optimal quantity of metakaolin not only improved the concrete strength but also reduced the shrinkage. Barna et al [9] and Karagol et al [10] found that concrete containing antifreeze can be cured at low temperatures and still meet the design requirements. El-Hassan et al [11] studied the performance of alkali slag concrete using different curing systems and found that indirect water curing improved the compressive strength.…”

Section: Introductionmentioning

confidence: 99%

Temperature Field of Concrete Cured in Winter Conditions Using Thermal Control Measures

Shi

Deng

Zhao

et al. 2022

Advances in Materials Science and Engineering

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In order to obtain the construction technology of concrete construction at extreme low temperature and ensure the construction quality of concrete in winter, this study investigated the temperature field and compressive performance of concrete specimens cured in the laboratory at a temperature of −10°C using different thermal control measures. A finite element model of the observed temperature field was then established and shown to be in good agreement with the test results. This model was applied to analyse the factors influencing thermally controlled low-temperature concrete curing in winter. The results showed that concrete cast at −10°C using rock wool insulation covering and heated formwork for thermal control met the relevant performance requirements. Finally, the proposed temperature field model and thermal control measures were successfully applied to the construction of a concrete box girder in winter conditions.

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Energy-Efficient Approach to Cold-Weather Concreting

Cited by 37 publications

References 3 publications

Performance of nano-modified concrete under freezing and low temperatures

Performance of nano-modified concrete under freezing and low temperatures

Development of Innovative Antifreeze Grout Mortar for Anchor Applications in Cold Regions

Temperature Field of Concrete Cured in Winter Conditions Using Thermal Control Measures

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