Event Title

Green Concrete made with Recycled Concrete Aggregates: Fresh and Hardened Properties

Session

Civil Engineering, Infrastructure and Environment

Description

Globally, waste management has become vitally important as the demand for natural resources and the amount of construction and demolition waste disposal have greatly increased. From both, the environmental impact is significant. Based on this fact, this problem requires a right and sustainable solution in our country too. In this paper we present the outcome from an experimental investigation from the effect of replacement of natural (virgin) fine and coarse aggregate (NCA) with recycled concrete aggregate (RCA) on the properties of fresh and hardened concrete. The comparison of these experimental results with those reported in literature for concrete with RCA demonstrates the effectiveness in improving the fresh and hardened properties, especially compressive strength by using the optimal gradation of recycled concrete aggregates. Four different recycled aggregate concretes were produced. They were made of recycled fine and coarse aggregates with 0%, 20%, 40% and 60%, respectively. The experimental program is described and the results of slump test, concrete density, water absorption, compressive strength, water penetration and splitting tensile strength tests carried out on concrete are presented.

Keywords:

Green Concrete, Recycled Concrete Aggregates, Optimal Gradation, Mix-Design

Session Chair

Feti Selmani

Session Co-Chair

Anjeza Alaj

Proceedings Editor

Edmond Hajrizi

ISBN

978-9951-437-69-1

Location

Pristina, Kosovo

Start Date

27-10-2018 10:45 AM

End Date

27-10-2018 12:15 PM

DOI

10.33107/ubt-ic.2018.51

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Oct 27th, 10:45 AM Oct 27th, 12:15 PM

Green Concrete made with Recycled Concrete Aggregates: Fresh and Hardened Properties

Pristina, Kosovo

Globally, waste management has become vitally important as the demand for natural resources and the amount of construction and demolition waste disposal have greatly increased. From both, the environmental impact is significant. Based on this fact, this problem requires a right and sustainable solution in our country too. In this paper we present the outcome from an experimental investigation from the effect of replacement of natural (virgin) fine and coarse aggregate (NCA) with recycled concrete aggregate (RCA) on the properties of fresh and hardened concrete. The comparison of these experimental results with those reported in literature for concrete with RCA demonstrates the effectiveness in improving the fresh and hardened properties, especially compressive strength by using the optimal gradation of recycled concrete aggregates. Four different recycled aggregate concretes were produced. They were made of recycled fine and coarse aggregates with 0%, 20%, 40% and 60%, respectively. The experimental program is described and the results of slump test, concrete density, water absorption, compressive strength, water penetration and splitting tensile strength tests carried out on concrete are presented.