Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Evaluation of coarse recycled concrete aggregates effect on the properties of fresh and hardened concrete
https://orcid.org/http://orcid.org/0000-0002-8474-5856
This study presented is interested to identify the influence of the use of recycled concrete aggregates (RCA) on mechanical properties (compressive strength, tensile and Modulus of elasticity), rheological properties (workability, yield stress, and plastic viscosity), and total shrinkage of concrete. Coarse ordinary aggregates (COA) are partially substituted with RCA and an amount of superplasticizer has been added to keep the same workability. The results obtained indicate a positive effect of the recycled aggregates on the mechanical strengths. This effect is closely linked to the w/c ratio, the dosage of superplasticizer, and the percentage of substitution. Concrete mixtures with RCA record the highest values of rheological properties and large values of total shrinkage which depends on the w/c ratio. Correlations and mathematical relationships are proposed to express the variation in mechanical properties and those of total shrinkage as a function of the concrete composition.
Evaluation of coarse recycled concrete aggregates effect on the properties of fresh and hardened concrete
https://orcid.org/http://orcid.org/0000-0002-8474-5856
This study presented is interested to identify the influence of the use of recycled concrete aggregates (RCA) on mechanical properties (compressive strength, tensile and Modulus of elasticity), rheological properties (workability, yield stress, and plastic viscosity), and total shrinkage of concrete. Coarse ordinary aggregates (COA) are partially substituted with RCA and an amount of superplasticizer has been added to keep the same workability. The results obtained indicate a positive effect of the recycled aggregates on the mechanical strengths. This effect is closely linked to the w/c ratio, the dosage of superplasticizer, and the percentage of substitution. Concrete mixtures with RCA record the highest values of rheological properties and large values of total shrinkage which depends on the w/c ratio. Correlations and mathematical relationships are proposed to express the variation in mechanical properties and those of total shrinkage as a function of the concrete composition.
Evaluation of coarse recycled concrete aggregates effect on the properties of fresh and hardened concrete
https://orcid.org/http://orcid.org/0000-0002-8474-5856
This study presented is interested to identify the influence of the use of recycled concrete aggregates (RCA) on mechanical properties (compressive strength, tensile and Modulus of elasticity), rheological properties (workability, yield stress, and plastic viscosity), and total shrinkage of concrete. Coarse ordinary aggregates (COA) are partially substituted with RCA and an amount of superplasticizer has been added to keep the same workability. The results obtained indicate a positive effect of the recycled aggregates on the mechanical strengths. This effect is closely linked to the w/c ratio, the dosage of superplasticizer, and the percentage of substitution. Concrete mixtures with RCA record the highest values of rheological properties and large values of total shrinkage which depends on the w/c ratio. Correlations and mathematical relationships are proposed to express the variation in mechanical properties and those of total shrinkage as a function of the concrete composition.
Evaluation of coarse recycled concrete aggregates effect on the properties of fresh and hardened concrete
Asian J Civ Eng
Ait Mohamed Amer, Adem (Autor:in) / Ezziane, Karim (Autor:in) / Adjoudj, M’Hamed (Autor:in)
Asian Journal of Civil Engineering ; 22 ; 1173-1184
01.09.2021
12 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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