TY  - JOUR
T1  - Recycling of Residues and Residues of Buildings to Produce Different
Concrete Mixes Shapes and Sizes in Iraq
AU - Al-Harby, Noora Ayad 
JO  - Journal of Engineering and Applied Sciences
VL  - 15
IS  - 4
SP  - 956
EP  - 959
PY  - 2020
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2020.956.959
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2020.956.959
KW  - Recycling
KW  -residues and residues of buildings
KW  -concrete mixings
KW  -primary materials
KW  -cement properties
KW  -concrete floors
AB  - Concrete is the most important part of the construction, structuring of buildings and others with its
important properties in addition to being a material that can be produced locally from primary materials at the
lowest cost, so that, the accumulations resulting from the waste of concrete wastes give a lot of motivation to
produce more environmentally friendly concrete, the use of a quantity of clean water which was examined in
the water and soil laboratory of the Department of Water and Soil of the College of Science/University of
Sulaymaniyah was done by mixing a mixture of 9 cubes with c15-15 (15-15) press and use the results of the
study showed that 75% of recycled aggregates, residues of buildings and residues were used in the water tank
at a temperature of 20±1 and then examined at several time intervals. The cement properties used in this study
were within the limits of the standard required for the work of concrete from the remains of buildings and
constructions in terms of the degree of flexibility and the degree of softness. The value of the absorbance ratio
of the recycled aggregate is higher than it is in conventional aggregates but it is somewhat acceptable to the
specifications of the finished concrete pieces. The study recommended that this type of recycled concrete can
be used from the remains of buildings and concrete waste in road works, block manufacturing and in the work
of concrete floors.
ER  -