Open AccessThe Utilization of the Finest Fraction of Recycled Aggregate from CDW for Concrete
Author(s) -
Kristina Fořtová,
Tereza Pavlů
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/290/1/012013
Subject(s) - aggregate (composite) , demolition waste , materials science , cement , composite material , demolition , properties of concrete , fraction (chemistry) , geotechnical engineering , geology , civil engineering , engineering , chemistry , organic chemistry
The main aim of this study is to verify the use of fine recycled aggregate originating from construction and demolition waste. Fine fraction of aggregate up to 4 mm (sand) is commonly used for ordinary concrete. This research tests the properties of concrete whose sand content has been partially replaced by fine recycled aggregate. The use of these fine particles could reduce the consumption of natural sand. There were also tested samples with a mineral admixture up to 1 mm in size, which appear as dust during the crushing of waste concrete. The use of these fine particles fills pores between larger particles to make the aggregate skeleton of the concrete mixture denser. Furthermore, the fine particles can contain a small amount of unhydrated cement. The results of physical and mechanical and deformation properties of concrete mixtures are presented.