Technical viability of construction and demolition waste reuse in paving blocks industrial production: an experimental study
by Cleber E.F. Leal; José C. Marques Neto; Guilherme A. Parsekian; André L. Christoforo; Fernanda G.S. Ferreira
International Journal of Masonry Research and Innovation (IJMRI), Vol. 7, No. 4, 2022

Abstract: This research aimed at evaluating the partial replacement of the regular sand with a recycled sand from concrete and mortar waste to produce concrete paving blocks (CPB), as a strategy to reduce waste disposal and save natural resources. The recycled aggregate was collected at a municipal construction and demolition waste (CDW) recycling plant. Its physical properties were evaluated and compared with those from regular non-recycled aggregates. The units were manufactured in an industry plant, with 0%, 10%, 20% and 30% aggregate replacement ratios and same cement content. Compressive strength, tensile splitting strength, abrasion resistance and water absorption were determined at 7 and 28 days. As a result, the statistical analysis showed no differences among mechanical properties from the reference mix (0%) and other replacement ratios. All mixes met abrasion limits and showed satisfactory water absorption. In conclusion, the natural sand replacement up to 30% is technically viable for CPB scale-up production.

Online publication date: Fri, 01-Jul-2022

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Masonry Research and Innovation (IJMRI):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com