Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userEffect of the addition of polypropylene fibers on the swelling characteristics of clayey expansive soil
تأثير إضافة الألياف البولميرية على خصائص الانتفاخ في التربة الغضارية المنتفخة
1445
1 41
0
(
0
)
Added by
Aِl-Baath University ورقة بحثية
Publication date
2017
fields
Geotechnical Engineering
and research's language is
العربية
Authors
نجلا جميل الحسن( باحث )
Created by
Shamra Editor
Ask ChatGPT about the research
يتناول البحث دراسة تأثير إضافة الألياف البولميرية على خصائص التربة الغضارية المنتفخة . حيث تم دراسة تأثير إضافة الألياف على مقاومة القص للتربة الغضارية و لوحظ زيادة مقاومة القص حتى نسبة محددة من الألياف البولميرية بعدها تقل المقاومة مع زيادة نسبة الألياف المضافة للتربة . نسبة التحسن في المقاومة تراوحت ما بين (100-110)% و تم تحديد النسبة المثالية للألياف البولميرية التي تعطي القيم الأعلى للمقاومات.
This research studies the effect of the addition of polypropylene fibers (PF) on the properties of the swelling clayey soil. The effect of PF on the shear strength of the clayey soil has been studied and the results show that adding PF, up to specific value, increases the shear strength. Beyond this value of addition, the shear strength decreases. The increase in shear strength was about (100-110) % and the optimal addition ratio was determined.
References used
Akbulut, S., Arasan, S. and Kalkan, E., (2007) “Modification of clayey soils using tire rubber and synthetic fibers”. Applied Clay Science 38(2007) 23-32
Al-Dabbagh, A. W. (2000), “Study of Expansive Behavior of Clay Using Soil Suction as Applied to Wahda District Soil in Mosul Area”, M.Sc. Thesis, Civil Engineering Department, University of Mosul, Iraq
Freitag. ,D.R., “Soil Randomly Reinforced with Fibers,” Journal of Geotechnical Engineering, ASCE, Vol. 112,No. 8, 1986, pp. 823-826
rate research
Read More
Clayey expansive soils are fine grained soil with a low strength. Its
swelling potential and shear strength are significantly affected by
the water content.
This research aims to study the effect of the initial water content
on both shear strength and the required displacement to reach the
maximum strength.
This paper deals with the study of abnormalities crawl that occur in
soils Algdharyh bulging Khat turns out that these abnormalities are
not related only to enter the water to the soil, but there are
distortions in order to get the bulge constant moisture and these
distortions you get with the times. This research aims to
theoretical and practical study of the behavior of creep in
Algdharyh bulging soil.
With the widespread of oil facilities, distribution centers of oil and oil tanks, it has become a must in this article to study the impact of these materials on the physical and mechanical properties of soils, especially at coast to avoid distortions
and changes in the properties of these soils.
We tried in this research to study Clay coastal soil. Two main samples were studied: one polluted with materials leaked from these sites and the other was not. The samples were taken from both types and transported to the laboratories of the Faculty of Civil Engineering at the University in October. In the laboratory, we conducted experiments and evaluated their results.
This paper aims at investigating the effect of organic matter
content on the engineering properties of the soil.
The effect of the organic matter on both the consistency limits and strength have been investigated. The results show that the organic
matter increases both the plasticity and the strength of soil.
Mathematical formula is presented in which the unconfined
compression strength of the soil is related to the organic matter
content. It was concluded that increasing the organic matter
content increases the displacement corresponding to the maximum shear stress. In addition, the effect of the organic matter has been studied and the results show that the organic matter increases the compressibility of the soil.
Stabilizing the soil with cement has been investigated as well. The
results show that adding the cement to the soil improves the
strength of the soil and decreases its swelling potential.
Depending on the organic matter content, a mathematical formula
is presented to determine the required cement ratio to treat the
soil to decrease its swelling potential.
Recently worldwide researches have been devoted to the use of steel fibers recovered from used tires in concrete. In Syria the amount of recovered steel from used tires is estimated about 6000 tons/year.
For this purpose a bead wire having a diamete
r of 0.8 mm from burnt tires was extracted and used. Three mixes with cement content 300- 350 -400kg/m3 were produced incorporating three different volumes of fiber 0.5%, 1.0%, and 1.5% and three different length 30-40-60 mm. The concrete obtained by adding these fibers evidenced a satisfactory improvement of the fragile matrix mostly in terms of toughness and post cracking behavior On the other hand it was improvements in compressive strength by steel fiber inclusion the interesting results confirm the promising application of concrete reinforced with steel fibers extracted from used tires in aircraft pavement hydraulic structures and ground slab in fabrics.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
