Home|Journals|Articles by Year Follow on Twitter

Directory for Medical Articles
 

Open Access

Review Article

AJAS. 2020; 1(1): 28-34


Recycling Building Demolition Waste as an Asphalt Binder Course in Road Pavements: a Case Study in Benghazi

Manal S Ali Abmdas S Ali Abmdas, Halima Saeid Omar Saeid.

Abstract
At the recent years in Libya especially in Benghazi, building demolition increase because of wars and the processes of destruction that lead to increase concrete waste, causing extreme pressure on the available land-filled sites thatís becomes a new challenge to local environment. Due to environmental reasons and the shortage of natural resources, it is greatly valuable to recycle construction and demolition waste as much as possible. This paper investigates the feasibility of using recycled concrete aggregate (RCA) as a replacement to the natural aggregates (NAs) in the Asphalt Binder Course (ABC). So this study make as first evaluation to return use concrete aggregate for old and demolition building in concrete asphalt mix In Benghazi, the recycled concrete aggregate (RCA) obtained from building to live long more than 20 years after crash reinforcement concrete and sieving to get requirement granular particle to make asphalt mixture depends on International Specification (ASTM) American Society for Testing and Materials. In this research a number of aggregate tests is conducted which are sieve analysis, specific gravity, absorption, abrasion, impact value and crushing value. These tests are to investigate the applicability of using the recycled aggregates of demolition building debris as an asphalt binder in road pavements. Also, for comparison, the same tests were applied on the natural aggregates. Furthermore, number of bitumen tests is conducted. They are penetration test, softening point and ductility. The aim was to investigate its applicability to be used as a binder material. Marshal samples are prepared using both natural blending aggregates and recycled blending aggregate to investigate the properties of the asphalt mix; flow, stability and density and comparing the results with the specifications. The results showed that it is possible to use the recycled aggregates in preparing the Asphalt Binder Course taking into account the need to increase the bitumen content, the optimum bitumen content using recycled aggregates and for natural aggregates is 7%.

Key words: Demolition waste, Recycled concrete aggregate (RCA), Asphalt Binder Course (ABC), Road Pavements.


Full-text options

Full-text Article




Advertisement
American Journal of Diagnostic Imaging

SUBMIT YOUR ARTICLE NOW




ScopeMed.com
BiblioMed Home
Follow ScopeMed on Twitter
Author Tools
eJPort Journal Hosting
About BiblioMed
License Information
Terms & Conditions
Privacy Policy
Contact Us

The articles in Bibliomed are open access articles licensed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (https://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
ScopeMed is a Database Service for Scientific Publications. Copyright © ScopeMedģ Information Services.