Lecture 5 | Clay Mineralogy of Soil | Kaolinite, Illite, Montmorillonite | Composition and structure
270 بار بازدید -
7 ماه پیش
-
Clay mineralogy is a branch
Clay mineralogy is a branch of soil science that studies the composition and structure of clay minerals present in soils. Clay minerals are a group of complex, naturally occurring minerals with small particle sizes. The three main types of clay minerals are kaolinite, illite, and montmorillonite. Here's an overview of each:
Kaolinite:
Composition: Kaolinite is an aluminum phyllosilicate mineral. Its chemical formula is Al2Si2O5(OH)4.
Structure: It has a 1:1 layer structure, meaning one tetrahedral sheet of silica (SiO4) is linked to one octahedral sheet of alumina (AlO6). The layers are held together by hydrogen bonds.
Illite:
Composition: Illite is a non-expanding, mica-like clay mineral. Its chemical formula is complex and includes potassium, aluminum, silicon, hydrogen, and oxygen.
Structure: Illite has a 2:1 layer structure, consisting of two tetrahedral sheets sandwiching one octahedral sheet. The layers are weakly bonded and can be easily separated.
Montmorillonite:
Composition: Montmorillonite is a swelling clay mineral and a member of the smectite group. Its general formula is (Na, Ca)0.33(Al, Mg)2(Si4O10)(OH)2·nH2O.
Structure: It has a 2:1 layer structure like illite, but it can expand and shrink due to water absorption. The interlayer space holds water molecules and other cations, allowing for the expansion of the mineral structure.
General Properties of Clay Minerals:
Particle Size: Clay minerals have small particle sizes, typically less than 2 micrometers.
Surface Area: They have large surface areas, which contribute to their ability to adsorb and retain water and nutrients.
Electrical Properties: Clay minerals are negatively charged, influencing their interactions with cations in the soil.
All Mechanical Unique Series Video-
https://www.seevid.ir/c/CivilMantraa...
All Civil Engg. Unique Series Video
https://www.seevid.ir/c/CivilMantraa...
Join Telegram for All Videos
https://t.me/UniqueSeriesAKTU
Join Official Telegram Channel
https://t.me/civilmantraa
Join at Insta
Instagram: poorn_prakash
Be in touch with Facebook Page-
Facebook: cmantraa
Geotechnical engineering aktu,
Geotechnical engineering aktu civil,
Geotechnical engineering aktu 5th semester,
Geotechnical aktu,
Geotechnical engineering aktu quantum,
Geotechnical aktu quantum,
KCE501 aktu,
KCE501 AKTU Quantum,
Geotechnical engineering aktu KCE501,
#Geotechnical_engineering_aktu,
#Geotechnical_engineering_aktu_civil,
#Geotechnical_engineering_aktu_5th_semester,
#Geotechnical_aktu,
#Geotechnical_aktu_quantum,
#Geotechnical_aktu_quantum,
#KCE501_aktu,
#KCE501_AKTU_Quantum,
#Geotechnical_engineering_aktu_KCE501,
Kaolinite:
Composition: Kaolinite is an aluminum phyllosilicate mineral. Its chemical formula is Al2Si2O5(OH)4.
Structure: It has a 1:1 layer structure, meaning one tetrahedral sheet of silica (SiO4) is linked to one octahedral sheet of alumina (AlO6). The layers are held together by hydrogen bonds.
Illite:
Composition: Illite is a non-expanding, mica-like clay mineral. Its chemical formula is complex and includes potassium, aluminum, silicon, hydrogen, and oxygen.
Structure: Illite has a 2:1 layer structure, consisting of two tetrahedral sheets sandwiching one octahedral sheet. The layers are weakly bonded and can be easily separated.
Montmorillonite:
Composition: Montmorillonite is a swelling clay mineral and a member of the smectite group. Its general formula is (Na, Ca)0.33(Al, Mg)2(Si4O10)(OH)2·nH2O.
Structure: It has a 2:1 layer structure like illite, but it can expand and shrink due to water absorption. The interlayer space holds water molecules and other cations, allowing for the expansion of the mineral structure.
General Properties of Clay Minerals:
Particle Size: Clay minerals have small particle sizes, typically less than 2 micrometers.
Surface Area: They have large surface areas, which contribute to their ability to adsorb and retain water and nutrients.
Electrical Properties: Clay minerals are negatively charged, influencing their interactions with cations in the soil.
All Mechanical Unique Series Video-
https://www.seevid.ir/c/CivilMantraa...
All Civil Engg. Unique Series Video
https://www.seevid.ir/c/CivilMantraa...
Join Telegram for All Videos
https://t.me/UniqueSeriesAKTU
Join Official Telegram Channel
https://t.me/civilmantraa
Join at Insta
Instagram: poorn_prakash
Be in touch with Facebook Page-
Facebook: cmantraa
Geotechnical engineering aktu,
Geotechnical engineering aktu civil,
Geotechnical engineering aktu 5th semester,
Geotechnical aktu,
Geotechnical engineering aktu quantum,
Geotechnical aktu quantum,
KCE501 aktu,
KCE501 AKTU Quantum,
Geotechnical engineering aktu KCE501,
#Geotechnical_engineering_aktu,
#Geotechnical_engineering_aktu_civil,
#Geotechnical_engineering_aktu_5th_semester,
#Geotechnical_aktu,
#Geotechnical_aktu_quantum,
#Geotechnical_aktu_quantum,
#KCE501_aktu,
#KCE501_AKTU_Quantum,
#Geotechnical_engineering_aktu_KCE501,
7 ماه پیش
در تاریخ 1402/10/17 منتشر شده
است.
270
بـار بازدید شده