Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Polypropylene


Effect of Adding Polypropylene Fibers in Met kaolin-Based Geopolymer Concrete

Qais J. Frieh; Mushtaq H. Kamil

Engineering and Technology Journal, 2021, Volume 39, Issue 12, Pages 1814-1820
DOI: 10.30684/etj.v39i12.2224

Geopolymer is a binder material that was created as a result of efforts to decrease Portland cement's negative environmental effects.  Geopolymer concrete shares certain properties with ordinary concrete, including brittleness. Like ordinary concrete, geopolymer concrete, when exposed to stresses, cracks and fails under these stresses. The purpose of adding fibers to geopolymer concrete is to overcome the matrix's brittleness and enhance its strength (particularly flexural strength). This study used metakaolin, a range of alkaline activators, and different quantities of polypropylene fibers to produce geopolymer concrete. Metakaolin's chemical composition, workability, density, flexural and compressive strength of geopolymer concrete were all examined for the purpose of determining the effect of polypropylene fibers on geopolymer concrete. Polypropylene fibers were used to make the mixes, which were then added to the mix at various percentages of 0 %, 0.5 %, and 1 % of the total volume of concrete. The results of the experiments showed that increasing the polypropylene fiber content to 0.5 % boosts the compressive strength of geopolymer concrete. On the seventh day, the compressive strength increased to 21 %. The density of geopolymer concrete was increased by adding polypropylene fibers, and there was a decrease in the workability with different fiber ratios.

Improving Thermal Properties and Reducing Total Cost of Plastic - Agricultural Residues Composites Used as Non- Traditional Building Materials

Qasem Abd Saloom Ahmed; Zareh Azat Sarkis; Ali Salman Owaid; Ansam Adnan Hashim

Engineering and Technology Journal, 2015, Volume 33, Issue 4, Pages 612-620

Samples of plastic agricultural residues composites were prepared for different compositions. Mechanical,thermal and physical tests were performed for all samples. Tensile, flexural, compression, hardness and Izod impact tests were performed as mechanical tests. Optical, thermal mechanical and density tests and measurements were also conducted for all samples to insure and confirm the physical properties and stabilities. Results of56 %weight percentage ratio of reinforcing phase (agricultural residue) shows a good properties for samples which include coupling agent, UV Stabilizer and lubricantsas 7% of weight percentages.

Development and Strength Properties of PP/PA6/RED Kaoline and PP/PA6/ Bentonite Blends

Najat J. Saleh

Engineering and Technology Journal, 2009, Volume 27, Issue 12, Pages 2322-2335

In the present work a new type of composite material has been prepared
from mixing of polypropylene and polyamide 6 at constant ratio (80/20)] and
adding different weight percent (0, 5,10,15)% of both local bentonite and red
kaoline fillers respectively by using single screw extruder .Some of mechanical
properties such as tensile strength (Young modulus) tensile at fracture and
elongation of filled and unfilled PP/PN6 blends were determined at different
temperatures, and different weight percent of filler. Addition of filler increases the
Young modulus and tensile strength at break. Bentonite filler gives better
mechanical properties, than red kaoline fillers. Also empirical equations were
obtained which could be utilizing to calculate one of the mechanical properties in
term of temperatures and weight fraction of filler content. An equation was
proposed to show the best fit with experimental data, relevant contour diagrams,
for optimization of properties is also presented.

Studing The Mechanical Properties Of Ternary Blends Of Hdpe/Pp/Abs

Zanaib.Y.Shnea; Nabeela A. Mohammed

Engineering and Technology Journal, 2008, Volume 26, Issue 7, Pages 885-893

In this work a type of polymer blend has been prepared from mixing different
percent (40,50,60, and 70) % of High-density polyethylene, polypropylene and adding 6%
weight percent of acrylonitril-butadiene-styrene by using single-screw extruder. The
extrusion process concentrated on the homogeneous mixing manner among materials
through a regular selection of machine screw revolution per minute and temperature used in
extrusion process. Some of mechanical properties such as impact strength, modulus of
elasticity and shore hardness of polymer blend, were determined at different weight fraction
of blend. It was found that the addition (6%wt) of ABS to the binary blends HDPE/PP leads
to increase the modulus of elasticity, the impact strength and shore hardness.
On the other hand increasing % HDPE content from 40 to 70wt% in HDPE/PP
ternary blends leads to increase the modulus of elasticity from 166.35 Mpa to 186.25 Mpa,
and impact strength increase from o.o52 to o.o6 J/mm2 while decreases the shore hardness
from 89 to 69.