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Creep Response of Rubberised One-Part Alkali-Activated Concrete
https://orcid.org/http://orcid.org/0000-0001-5315-5506
https://orcid.org/http://orcid.org/0000-0001-7738-6130
https://orcid.org/http://orcid.org/0000-0002-0038-7415
This paper presents the creep deformations and long-term constitutive behavior of rubberised one-part alkali-activated concrete. Blast furnace slag and fly ash are used as the main and secondary aluminosilicate precursor, respectively, while anhydrous sodium metasilicate is employed as a solid activator. Crumb rubber particles are used to replace up to 60% by volume of the total natural aggregates. Specimens are allowed to cure at ambient conditions for 28 days, and the creep specimens are then subjected to two compressive stress levels of 10 and 20% of the 28-day strength, which are sustained for a period of one-year. Results show a deterioration in the compressive strength and elastic modulus with higher rubber content. The long-term strength properties of the creep specimens and their unloaded counterparts are lower than similar specimens tested at 28 days. The axial and lateral crushing strains of the specimens tested at the end of the creep test are higher than similar specimens tested at 28 days. The creep strains increase as the creep load increases but reduce with higher rubber content. The specific creep and creep coefficients show a reduction as the creep load increases from 10 to 20% of the 28-day compressive strength but increase as the rubber content increases. The creep coefficients of the non-rubberised specimens are significantly higher than those given by design equations in the CEB-FIP Model Code 2010, while the opposite is seen for specimens with high rubber content.
Creep Response of Rubberised One-Part Alkali-Activated Concrete
https://orcid.org/http://orcid.org/0000-0001-5315-5506
https://orcid.org/http://orcid.org/0000-0001-7738-6130
https://orcid.org/http://orcid.org/0000-0002-0038-7415
This paper presents the creep deformations and long-term constitutive behavior of rubberised one-part alkali-activated concrete. Blast furnace slag and fly ash are used as the main and secondary aluminosilicate precursor, respectively, while anhydrous sodium metasilicate is employed as a solid activator. Crumb rubber particles are used to replace up to 60% by volume of the total natural aggregates. Specimens are allowed to cure at ambient conditions for 28 days, and the creep specimens are then subjected to two compressive stress levels of 10 and 20% of the 28-day strength, which are sustained for a period of one-year. Results show a deterioration in the compressive strength and elastic modulus with higher rubber content. The long-term strength properties of the creep specimens and their unloaded counterparts are lower than similar specimens tested at 28 days. The axial and lateral crushing strains of the specimens tested at the end of the creep test are higher than similar specimens tested at 28 days. The creep strains increase as the creep load increases but reduce with higher rubber content. The specific creep and creep coefficients show a reduction as the creep load increases from 10 to 20% of the 28-day compressive strength but increase as the rubber content increases. The creep coefficients of the non-rubberised specimens are significantly higher than those given by design equations in the CEB-FIP Model Code 2010, while the opposite is seen for specimens with high rubber content.
Creep Response of Rubberised One-Part Alkali-Activated Concrete
https://orcid.org/http://orcid.org/0000-0001-5315-5506
https://orcid.org/http://orcid.org/0000-0001-7738-6130
https://orcid.org/http://orcid.org/0000-0002-0038-7415
This paper presents the creep deformations and long-term constitutive behavior of rubberised one-part alkali-activated concrete. Blast furnace slag and fly ash are used as the main and secondary aluminosilicate precursor, respectively, while anhydrous sodium metasilicate is employed as a solid activator. Crumb rubber particles are used to replace up to 60% by volume of the total natural aggregates. Specimens are allowed to cure at ambient conditions for 28 days, and the creep specimens are then subjected to two compressive stress levels of 10 and 20% of the 28-day strength, which are sustained for a period of one-year. Results show a deterioration in the compressive strength and elastic modulus with higher rubber content. The long-term strength properties of the creep specimens and their unloaded counterparts are lower than similar specimens tested at 28 days. The axial and lateral crushing strains of the specimens tested at the end of the creep test are higher than similar specimens tested at 28 days. The creep strains increase as the creep load increases but reduce with higher rubber content. The specific creep and creep coefficients show a reduction as the creep load increases from 10 to 20% of the 28-day compressive strength but increase as the rubber content increases. The creep coefficients of the non-rubberised specimens are significantly higher than those given by design equations in the CEB-FIP Model Code 2010, while the opposite is seen for specimens with high rubber content.
Creep Response of Rubberised One-Part Alkali-Activated Concrete
Lecture Notes in Civil Engineering
Ilki, Alper (Herausgeber:in) / Çavunt, Derya (Herausgeber:in) / Çavunt, Yavuz Selim (Herausgeber:in) / Elzeadani, Mohamed (Autor:in) / Bompa, Dan V. (Autor:in) / Elghazouli, Ahmed Y. (Autor:in)
International Symposium of the International Federation for Structural Concrete ; 2023 ; Istanbul, Türkiye
01.06.2023
11 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Monotonic and cyclic constitutive behaviour of rubberised one-part alkali-activated concrete
| Elsevier | 2023