The effects of antifreeze use on physical and mechanical properties of concrete produced in cold weather

Çullu, Mustafa; Arslan, Metin

doi:10.1016/j.compositesb.2013.02.012

Cited by 35 publications

(4 citation statements)

References 7 publications

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“…The ideal temperature for concrete curing is 15 to 16 °C. The normal range of temperature for the concrete environment is between 5 and 32 °C [ 12 ]. At temperatures below 5 °C, the chemical reaction between cement and water is greatly reduced [ 12 ].…”

Section: Resultsmentioning

confidence: 99%

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Comparative Analysis on the Micropore and Microstructure Characteristics of Concrete under Insulated Formwork

Lim

Nam²

2021

Materials

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During concrete construction in winter, the concrete performance is generally improved by adding a chemical admixture or providing protection using tents and hot-air blowers. However, long-term strength or safety accidents may occur due to the installation and removal of the tents. This study considered insulated gang forms to improve formwork methods. In this regard, the microstructure and micropore characteristics of concrete were investigated experimentally to examine the insulated gang form effect on the physical and mechanical properties of concrete. The micropore characteristics were investigated through scanning electron microscopy. The results confirm that applying insulated gangs improves workability and safety without adding chemical admixture. Moreover, the application of insulated gang forms reduces the use of tents and hot-air blowers. Therefore, insulated gangs provide excellent initial quality to the concrete.

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Section: Resultsmentioning

confidence: 99%

“…Finally, several studies have been conducted on method (5). As representative cases, Cullu and Arslan studied the physical and mechanical properties of concrete that used antifreeze in cold weather [ 12 ]. Riza Polat studied the effects of elements to secure the strength of fresh concrete in cold weather [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis on the Micropore and Microstructure Characteristics of Concrete under Insulated Formwork

Lim

Nam²

2021

Materials

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“…Ordinary Portland cement obviously cannot meet the winter construction requirements because the hydration of ordinary Portland cement is severely suppressed when the temperature drops to below 0 • C [1]. In addition, ordinary Portland cement has a large risk of frost damage in a negative temperature environment because the volume of water in concrete will expand 9% to break the microstructure of concrete when it turns into ice [2]. Taking protections such as building a warm shed, covering thermal storage, and insulation material are effective and safe methods to guarantee the normal hydration and avoid frost damage [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Effect of Alkali Cation on Performance of Alkali-Activated Slag Mortar in Cold Environments

et al. 2022

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Alkali-activated slag (AAS) is a promising cementing material for winter construction due to its continuous hydration at sub-zero temperature. In order to obtain a higher mechanical strength of AAS mortar in winter construction, the most efficient alkali activator should be selected. Potassium silicate and sodium silicate as alkaline activators of AAS mortar possess a high strength and hydration rate at ordinary temperature. Potassium silicate and sodium silicate as alkali activators showed different properties because of different alkali cations, so the effect of alkali cation on the performance of AAS mortar was studied at sub-zero temperature. The mechanical properties of potassium-silicate-activated AAS (K-AAS) mortar and sodium-silicate-activated AAS (N-AAS) mortar were thoroughly compared at the ambient temperatures of −10 °C, 0 °C, and 20 °C. The compressive and flexural strength of K-AAS mortar was increased by 130.4% and 72.3% at the age of 1 day and increased by 49% and 33.7% at the age of 28 days at the ambient temperature of −10 °C compared with N-AAS mortar. In order to reveal the mechanism behind the influence of different alkali cations on the mechanical properties of AAS mortar, the hydration heat, hydration products, and pore structures of AAS were characterized. The hydration heat exhibited that the rate of heat release and the cumulative heat release of K-AAS are higher than N-AAS, indicating the higher reaction degree of K-AAS. DTG/TG and ATR-FTIR spectra showed that K-AAS generated more gel product C(-A)-S-H compared with N-AAS at the same curing temperature. The MIP results exhibited that the porosity of K-AAS was lower than N-AAS. Finally, the mechanism explanation of the effect of alkali cation on the performance of AAS mortar was proposed. To sum up, potassium silicate should be selected as an alkali activator of AAS in winter construction.

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“…Özellikle soğuk iklime sahip bölgelerde ve kış aylarında betonun önemli bir bileşeni olan bu kimyasal katkı çimentonun hidratasyonunu hızlandırmaktadır. Ancak uzun vadede bu katkının etkileri pek bilinmemektedir[4].I.…”

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Investigation of High Temperature Effects on Concrete Additive Antifreeze

Kara

Arslan

2018

Aksaray University Journal of Science and Engineering

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The purpose of this work is to determine the effect of the antifreeze additive on the behavior of the concrete under high temperature. For this purpose, two different types of C20 class concrete were produced with reference and antifreeze additive. Fresh concrete was poured into plate molds, after 14 days standard curing, core samples of Ø5x10 cm dimensions were taken from plaque concrete. On day 90, the core samples were exposed to temperatures of 20, 200, 400, 550 and 700 °C for 3 hours and they cooled by air and water spray. Experiments on water absorption, ultrasound transit speed and compressive strength were carried out on the core samples. Microstructures were analyzed by X-ray diffraction method in concrete specimens applied at temperatures of 20 and 700 °C. As a result, it has been determined that the concrete with antifreeze strain that is least affected by the temperature of 700 °C is cooled water.

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The effects of antifreeze use on physical and mechanical properties of concrete produced in cold weather

Cited by 35 publications

References 7 publications

Comparative Analysis on the Micropore and Microstructure Characteristics of Concrete under Insulated Formwork

Comparative Analysis on the Micropore and Microstructure Characteristics of Concrete under Insulated Formwork

Effect of Alkali Cation on Performance of Alkali-Activated Slag Mortar in Cold Environments

Investigation of High Temperature Effects on Concrete Additive Antifreeze

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