Journal of Concrete Structures and Materials

Journal of Concrete Structures and Materials

The Effect of Reducing Concrete Temperature by Ice on the Amount of Superplasticizer and the Properties of Fresh and Hardened Self-Compacting Concrete

Document Type : Original Article

Authors
Babak Ahmadi 1
Farhad Avatefi Hoveyda 2
Amirhomayoun Sabetimotlagh 2
Mohammad Javad Mohammadi 3
Mohsen Farrokhi 2
Abolfazl Vosoghi 2
Babak Foroutanmehr 2
1 Assistant Professor, Road, Housing & Urban Development Research Center, Tehran, Iran
2 Fahab Beton ready-mixed concrete producer company. Tehran. Iran
3 Fahab Beton ready-mixed concrete producer company, Tehran. Iran
10.30478/jcsm.2023.376184.1308
Abstract
As the industrial production of Self-Compacting Concrete (SCC) in the form of ready-mixed concrete faces challenges in different weather conditions, it is necessary to consider mixing, transportation, and casting to achieve the desired workability, mechanical, and durability properties. As a result of improper compaction and placement of SCC, a decrease in workability can result in failure to achieve the desired strength and durability. It was found that replacing mixing water with ice with 0, 10, 30 and 60% reduced the temperature of fresh concrete by approximately 1, 3, and 12°C compared to the control mix design after 110 minutes from the start of mixing. The superplasticizer amount and concrete properties were examined. After reducing the temperature of fresh concrete and maintaining its fluidity, the amount of superplasticizer decreased by 62.4%, and the result of its decrease with an increase in the amount of ice, increased the final production cost by 5.4%. In general, reducing the temperature of fresh concrete improved the rheological properties of SCC. When compared to the control mix design, the use of ice did not significantly alter the compressive strength, water absorption, and electrical resistance, except for a 17% increase in water absorption due to replacing 60% of the ice.
Keywords
Self-Compacting Concrete
Fresh concrete temperature
Ice
Superplasticizer
concrete properties

Subjects

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Journal of Concrete Structures and Materials
Volume 7, Issue 2 - Serial Number 14
September 2022
Pages 5-18

  • Receive Date 10 December 2022
  • Revise Date 22 January 2023
  • Accept Date 20 February 2023