Asphalt concrete is used in the surface layer of road paving and is widely used around the
world. Asphalt concrete consists of coarse aggregate , fine aggregate, filler and asphalt
binder. Fly ash FA is one of the main wastes of coal-fired thermal
and coal-fired power
plants and is available in large quantities and has no use. The aim of this study is to
evaluate the possibility of using fly ash as a filler material in hot asphalt mixtures and to
use it as an alternative to natural fillers by performing laboratory work in which the asphalt
mixture is designed and the optimal ratio of asphalt is determined . Then replace the filler
material with 0, 25, 50, 75 and 100% with fly ash . The results showed that Marshall's
stability values increased with increased replacement ratio and observed that Marshall's
hardness values were decreased while remaining within the tolerable limits of the
specifications. The study concluded that fly ash can be used as a filler in asphalt mixtures.
This study aims to use the ash formed from the burning of firewood and the different pruning residues to remove the hardness of water
Soda ash was characterized using different techniques, including XRD,flame spectroscopy , volume titration and othe
rs.
These methods aim to determine the composition of the ash and the components which are contributing to the removal process.
The optimum mixing time was determined using certain amount of soda ash to the hard water and the water hardness was determined in the rang of time (0.5, 1, 2, 3, 4 and 5h) where the ideal time was 3 hours.
The removal ratios were determined when the mixing time of the two phases was 3 h, and adding directly the following quantities of ash (0.5,1,2,3,5,7,10,15,20,25) g to 200 ml of highly hardened water. The removal rate was increased by increasing the amount of added ash. The removal rate was approximately 50% when 1 g of ash was used and the complete removal rate of 100% was achieved when the amount of ash was 25 g.
Ash toxicity of burning pruning residues of three plant species i.e. apple, grape and
olive was tested against adults of cowpea seed beetle Callosobruchus maculatus
(F.) (Coleoptera, Bruchidae) using the following concentrations: (5, 10, 20, 40
an
d 80) g/kg of cowpea seed. The study was carried out in incubator at fixed
temperature and humidity at Biotechnology Research Center, Al-baath University.
Readings were taken after (24, 48 and 72) h of treatment, and corrected mortality
rates were calculated and values of LC50, LC90, LT50 and LT90.
This study aims to use the ash formed from the burning of firewood and the different
pruning residues to remove the hardness of water
Soda ash was characterized using different techniques, including XRD,flame
spectroscopy , volume titration and ot
hers.
These methods aim to determine the composition of the ash and the components
which are contributing to the removal process.
The optimum mixing time was determined using certain amount of soda ash to the
hard water and the water hardness was determined in the rang of time (0.5, 1, 2, 3, 4 and
5h) where the ideal time was 3 hours.
The removal ratios were determined when the mixing time of the two phases was 3
h, and adding directly the following quantities of ash (0.5,1,2,3,5,7,10,15,20,25) g to 200
ml of highly hardened water. The removal rate was increased by increasing the amount of
added ash. The removal rate was approximately 50% when 1 g of ash was used and the
complete removal rate of 100% was achieved when the amount of ash was 25 g.
This research aims to study the effectiveness of each(ferric chloride , ash and coffee
dregs) to remove phosphorus from Lattakia Port Laboratories' waste water which is
assembled in a separate sewage pit by doing laboratory experiments on water con
taining
high concentrations of phosphorus, whether real wastewater or standard solutions of
phosphorus oxide. Where it has been experimenting with ferric chloride at doses as weight
average(FeCl3/P = (0-5)) to give effectiveness ratios(70- 80)% with determining the value
of the pH-compliant and it was noted re-releasing of phosphorus time after(10-12) hours of
the start of precipitation, beside that it has been experimenting with ash as adsorpted agent
at doses as weight average(Ash/P = (2-4.5)) to give effectiveness ratio which it had
reached to 98% where it was noted re-releasing of phosphorus after 11 hours with
determining the pH values of approval for that, As coffee dregs when added in
doses)Coffee dreg/P = 3-10) as weight average, it fulfilled proportion removal(40 - 99) %
and phosphorus re-released after 24 hours. The outcome of these experiments was to
propose the most appropriate economic solution in the case of study.
This piece of research attempts to trace the textual study through examining the
excellencies of Ash-shanfara’s text, next to its artistic secrecies that have been neglected
by those researches who were busy with stories, tales, language and (ideol
ogy). However,
the literary heritage has received a considerable amount folkloric tales and superstitions. In
the past, linguists had been attracted to the al-Lamiyiah semantically and syntactically. A
few contemporary studies had mentioned few selections, the thing that triggered the sence
of poetical in their veins, which found it enough to portray a constellation of its intellectual
proposals. Thus al-Lamiyiah survived, being an artistic masterpiece a virgin soil.
Henceforward comes this research to scrtunize the strata of secrets of artistic aesthetics,
starting from the dynamic polarity structure that systematize the concluded presenceabsence
relationships, and ending with crystallizing the poetical personality (not the
historical) in the poetical heritage. It unleashes the varieties of the ‘ego’ within its unique
tissue ascertaining the poetry is creativity, and not merely virgin before natural scenaries,
or successive episodes through time, nether is it a description per se. Rather, it is an
intuitive creation that manipulates nature, among many other things, for the sake of its
artistic intentions.
The objective of this research is to study the effect of wood ash in
rheological properties of Self – compacting mortar (SCM). By
implemented some mixtures with different percentage from wood
ash with two kinds of cement and three kinds of super plasticizer
and study the effect in slump flow and yield stress to this
mixtures.
