http://iaeme.com/Home/journal/IJCIET 128 [email protected] International Journal of Civil Engineering and Technology (IJCIET) Volume 10, Issue 09, September 2019, pp. 128-146, Article ID: IJCIET_10_09_014 Available online at https://iaeme.com/Home/issue/IJCIET?Volume=10&Issue=9 ISSN Print: 0976-6308 and ISSN Online: 0976-6316 © IAEME Publication RECYCLED AGGREGATE HIGH-STRENGTH CONCRETE Mohamed Emad M. Sc. Candidate, a Civil Engineer, Egypt Noha M. Soliman Associate Professor, Civil Engineering Department, Faculty of Engineering, Menoufia University, Egypt Alaa A. Bashandy Associate Professor, Civil Engineering Department, Faculty of Engineering, Menoufia University, Egypt ABSTRACT The use of recycled aggregates from demolished constructions as a coarse aggregate for concrete becomes a need to reduce the negative effects on the environment. This study aims to study the effect of using recycled materials (such as crushed concrete, crushed ceramic and crushed red brick) as coarse aggregate for high-strength concrete on the main properties of high-strength concrete. Also, the behavior of reinforced beams cast using that type was studied to investigate their behavior in terms of the deflection, strain values, initial cracking load, crack pattern and ultimate loads. Main variables are recycled aggregate type (recycled crushed concrete, crushed ceramic and recycled crushed red brick), replacement ratio (as 25%, 50%, 75% and 100% from dolomite as coarse aggregate), age of test (after 7, 28 and 56 days). The test results showed that high-strength concrete made with recycled aggregate behave in a similar manner as that made with dolomite as aggregate. Also, a decrease in the range of about 13.1-67.2%, 17.6-72.0%, 24.3-74.6% and 6.5-71.1% for compressive, splitting tensile, flexure and bond strengths and bond strength compared to that cast using dolomite. Keywords: Recycled aggregate; High-strength concrete; Super plasticizer; Beams Cite this Article: Mohamed Emad, Noha M. Soliman and Alaa A. Bashandy, Recycled Aggregate High-Strength Concrete. International Journal of Civil Engineering and Technology (IJCIET), 10(9), 2019, pp. 128-146. https://iaeme.com/Home/issue/IJCIET?Volume=10&Issue=9 1. INTRODUCTION Recycled aggregates are those aggregates produced from the demolished constructions. The utilization of recycled aggregate in concrete production increases due to environmental and economic considerations to produce recycled aggregate concrete (RAC) [1, 2]. RAC is the concrete, which made with recycled aggregate as partially or fully replacement of natural
RECYCLED AGGREGATE HIGH-STRENGTH CONCRETE
May 19, 2023
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Related Documents
