Evaluation of Shear Strength Parameters of Amended Loess through Using Common Admixtures in Gorgan, Iran
Non-saturated soils that while saturation greatly
decrease their volume, have sudden settlement due to increasing
humidity, fracture and structural crack are called loess soils. Whereas
importance of civil projects including: dams, canals and
constructions bearing this type of soil and thereof problems, it is
required for carrying out more research and study in relation to loess
soils. This research studies shear strength parameters by using
grading test, Atterberg limit, compression, direct shear and
consolidation and then effect of using cement and lime additives on
stability of loess soils is studied. In related tests, lime and cement are
separately added to mixed ratios under different percentages of soil
and for different times the stabilized samples are processed and effect
of aforesaid additives on shear strength parameters of soil is studied.
Results show that upon passing time the effect of additives and
collapsible potential is greatly decreased and upon increasing
percentage of cement and lime the maximum dry density is
decreased; however, optimum humidity is increased. In addition,
liquid limit and plastic index is decreased; however, plastic index
limit is increased. It is to be noted that results of direct shear test
reveal increasing shear strength of soil due to increasing cohesion
parameter and soil friction angle.
[1] Pashaei,A.( 1997). Studying physical and chemical properties of loess
soils at Gorgan and Dasht region. issue.23-24, p.67-68.
[2] Khajeh,F.( 2002). Studying sedimentation, sediment environment and
de-sedimentation of quarter deposits at Gorganroud basin, PhD thesis in
geology. Islamic Azad University. Science & Research branch, p.250
[3] Stahculescu, I.(1967). Active zone settlement of shallow foundations on
loessial soils. proceedings of the 5th Australia- New Zealand conference
on soil mechanics and foundation engineering, Auckland New Zealand.
[4] Houston, SL. Ehwany, El. (1991). Sample disturbance of cemented
collapsible soils. journal of geotechnical engineering, ASCE vol.117,
No.5, pp 731-752.
[5] Clevenger, WA.(1959). Experiences with bess as foundation material.
journal of the soil mechanics and foundation division, proceeding of the
American Society of Civil Engineers, paper.1025.
[6] Clemencc, Sp. and Finharr, AO.( 1981). Design consideration for
collapsible soils. journal of the geotechnical engineers division.
proceedings of the American Society of Civil Engineers, Vol.107,
No.Gt3.
[7] ISBN: O-408-01457-1(1993). Annual book of ASTM standard, standard
test method for measurement of collapsible potential of soils.
[8] Barden, L. Gown, Mc. and Collins K.(1973).The collapse mechanism in
party saturated soil. Eng geology. No.7, pp.49-60.
[9] Grabowska, B.(1988). Geological problems of losses in Poland Eng.
Geology journal, vol 125, No.S, 2-4 , pp.177-199.
[10] Bell, FG. (1983).Properties of soils and rocks butter worth & co L
[1] Pashaei,A.( 1997). Studying physical and chemical properties of loess
soils at Gorgan and Dasht region. issue.23-24, p.67-68.
[2] Khajeh,F.( 2002). Studying sedimentation, sediment environment and
de-sedimentation of quarter deposits at Gorganroud basin, PhD thesis in
geology. Islamic Azad University. Science & Research branch, p.250
[3] Stahculescu, I.(1967). Active zone settlement of shallow foundations on
loessial soils. proceedings of the 5th Australia- New Zealand conference
on soil mechanics and foundation engineering, Auckland New Zealand.
[4] Houston, SL. Ehwany, El. (1991). Sample disturbance of cemented
collapsible soils. journal of geotechnical engineering, ASCE vol.117,
No.5, pp 731-752.
[5] Clevenger, WA.(1959). Experiences with bess as foundation material.
journal of the soil mechanics and foundation division, proceeding of the
American Society of Civil Engineers, paper.1025.
[6] Clemencc, Sp. and Finharr, AO.( 1981). Design consideration for
collapsible soils. journal of the geotechnical engineers division.
proceedings of the American Society of Civil Engineers, Vol.107,
No.Gt3.
[7] ISBN: O-408-01457-1(1993). Annual book of ASTM standard, standard
test method for measurement of collapsible potential of soils.
[8] Barden, L. Gown, Mc. and Collins K.(1973).The collapse mechanism in
party saturated soil. Eng geology. No.7, pp.49-60.
[9] Grabowska, B.(1988). Geological problems of losses in Poland Eng.
Geology journal, vol 125, No.S, 2-4 , pp.177-199.
[10] Bell, FG. (1983).Properties of soils and rocks butter worth & co L
@article{"International Journal of Architectural, Civil and Construction Sciences:52670", author = "Seyed Erfan Hosseini and Mohammad K. Alizadeh and Amir Mesbah", title = "Evaluation of Shear Strength Parameters of Amended Loess through Using Common Admixtures in Gorgan, Iran", abstract = "Non-saturated soils that while saturation greatly
decrease their volume, have sudden settlement due to increasing
humidity, fracture and structural crack are called loess soils. Whereas
importance of civil projects including: dams, canals and
constructions bearing this type of soil and thereof problems, it is
required for carrying out more research and study in relation to loess
soils. This research studies shear strength parameters by using
grading test, Atterberg limit, compression, direct shear and
consolidation and then effect of using cement and lime additives on
stability of loess soils is studied. In related tests, lime and cement are
separately added to mixed ratios under different percentages of soil
and for different times the stabilized samples are processed and effect
of aforesaid additives on shear strength parameters of soil is studied.
Results show that upon passing time the effect of additives and
collapsible potential is greatly decreased and upon increasing
percentage of cement and lime the maximum dry density is
decreased; however, optimum humidity is increased. In addition,
liquid limit and plastic index is decreased; however, plastic index
limit is increased. It is to be noted that results of direct shear test
reveal increasing shear strength of soil due to increasing cohesion
parameter and soil friction angle.", keywords = "Loess Soils, Shear Strength, Cement, Lime.", volume = "6", number = "12", pages = "1058-4", }