Fresh, Durability and Mechanical Behavior of Self Consolidating Concrete Incorporating Fly Ash and Admixture under Hot Weather

Abstract:

The self-consolidating concrete (SCC) become the material of choice by concrete industry due to its superior properties. However, these properties need to be verified under hot weather conditions. The paper investigates the behavior of SCC under hot weather. Six SCC mixtures were prepared under high temperatures. The SCC mixtures incorporated polycarboxylate admixture at different dosages and prolonged mixed for up to 2 hours at 30 °C and 40 °C. The cement paste was replaced with 20% of fly ash (FA). The fresh properties were investigated using slump flow, T₅₀, and VSI tests. The compressive strength was measured at 3, 7, and 28 days. The durability of SCC mixtures was evaluated by conducting rapid chloride penetration and water absorption tests.

• Periodical: Key Engineering Materials (Volume 904)
• Pages: 453-457
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.904.453
• Online since: November 2021
• Authors: Samer Al Martini*, Reem Sabouni, Abdel Rahman Magdy El-Sheikh
• Keywords: Fly Ash, High Temperature, Self-Consolidating Concrete (SCC), Superplasticizer

References

[1] S. Al-Martini, and M. Al-Khatib, Self Consolidating Concrete Properties with Binary and Ternary Blends under Hot Weather, ICE Construction Materials Journal, Theme: SCC, 2020 173(5), 203-214.

DOI: 10.1680/jcoma.18.00065

[2] S. Al-Martini, and J. Petit, Effects of Temperature and Continuous Mixing on Cement Paste Rheology, In the Proceeding of the Second International Conference on Future Concrete, 2011, Dubai.

[3] S. Al-Martini, J.Petit, and O. Mohamed, Effect of Continuous Mixing on Cement Paste Rheology and Effect of Hot Weather on Mechanical Properties of Self Consolidating Concrete (SCC), In the Proceeding of SCC 2013 International Conference, Chicago, 2013, USA.

[4] S. Al-Martini, and M. Al-Khatib, Rheology of Self Consolidating Concrete (SCC) under Extreme Conditions, ICE Construction Materials Journal, Theme: SCC, 2020, 173(5), 215-226.

DOI: 10.1680/jcoma.17.00017

[5] S. Al Martini, and M. Al-Khatib, Rheology of Green Self Consolidating Concrete (GSCC) with Ternary Blend under Coupled Effects of Temperature and Prolonged Mixing, 1st International Symposium on Civil and Environmental Engineering (ISCEE 2016), Maleka, Malaysia, (2016).

DOI: 10.1051/matecconf/201710301010

[6] M. Al Khatib, and S. Al-Martini, Effect of Silica Fume on Self-Consolidating Concrete (SCC) under Extreme Conditions, 29th International Conference of Advances and Trends in Engineering Materials and their Applications, TORONTO'2016 AES-ATEMA July 04 – 08,. 117-123, (2016).

DOI: 10.4028/www.scientific.net/kem.677.3

[7] S. Al-Martini, and M.Al-Khatib, An Experimental Study on Self-Consolidating Concrete (SCC) under Hot Weather and Hauling Time, Key Engineering Materials, Vol. 677, pp.3-7. Indexed by Elsevier:, February (2016).

DOI: 10.4028/www.scientific.net/kem.677.3

[8] S. Al-Martini, and O. Mohamed, Effect of Stablity of Self Consolidating Concrete (SCC) on its Fresh and Mechanical Properties Under High Temperature and Prolonged Mixing' In the Proceeding of The 11th International Conference on Concrete Engineering and Technology 2012, Malysia.

[9] S. Al-Martini, and O. Mohamed, Stable Flowable Concrete Under High Temperature and Prolonged Mixing, In Proceeding of 9th International Symposium on High Performance Concrete – Design, Verification and Utilization Civil-Comp Press, 9-11 August, 2011, Rotorua New Zealand.