TY  - JOUR
T1  - The Development of Structures and the Search of Physical Mechanical Properties of the Foam
Concrete Depend on the Techno-Genic Raw Materials in Iraq
AU - Al-Harby, Noora Ayad 
JO  - Journal of Engineering and Applied Sciences
VL  - 15
IS  - 12
SP  - 2522
EP  - 2528
PY  - 2020
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2020.2522.2528
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2020.2522.2528
KW  - Compressive strength
KW  -concrete and natural limestone
KW  -dense structure
KW  -buildings
KW  -technology
AB  - Traditionally, internal and external walls of the
buildings and facilities used to be built of heavy concrete
and natural limestone and brick made of ceramic each
type has dense structure. In Iraq it is necessary to adjust
temperature during the year except for 2-3 months in
residential houses and social buildings to create
comfortable conditions. For a period of three months
buildings must be heated and over 6 months they must be
cooled. The cost of heating and cooling processes is very
high. In cellular concrete technology as an adhesive used
mainly cement, lime and silicon components. Now,
intensive work taking place in Iraq in the restoration of
buildings destroyed during the war and there are large
reserves of mineral raw materials in construction places
that can be recycled effectively as a result of x-ray
analysis of these materials showed that their structures
contain, silicon, calcium oxides and clinker materials. A
sample of the materials contained separate pieces of
heavy concrete as well as gravel of circular shape. These
samples were collected and converted into molds within
28 h. The crusts were cut to remove the models and were
then placed in pressure vessel at a temperature of a
temperature of 180-200 for a period of 12 h and the
pressure 10-20. Experimental studies have shown that the
replacement of 30% of calc-siliceous binder with
technogenic raw materials of the Republic of Iraq makes
it possible to produce aerated concrete of class B1 which
can used as a thermal insulation and for the installation of
external walls of frame buildings.
ER  -