?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PENGARUH+FRAKSI+LEMPUNG+PADA+PASIR+TERHADAP%0D%0ANILAI+KOHESI+TANAH+DAN+INDEKS+PLASTISITAS&rft.creator=RENOL+PANGIDOAN+RAMBE%2C+(0915011078)&rft.subject=Mesin+(General).+Mesin+Sipil+(General)&rft.description=Salah+satu+tanah+yang+biasa+ditemukan+di+Indonesia+adalah+tanah+lempung.%0D%0ALempung+di+Asia+Tenggara+terdiri+dari+lapisan+lempung+lunak.+Tanah+lempung%0D%0Amemiliki+beberapa+sifat+fisik+yang+kurang+mendukung+untuk+konstruksi+salah%0D%0Asatunya+adalah+sifat+kembang+susut+yang+tinggi.+Sifat+kembang+susut+ini%0D%0Adipengaruhi+oleh+besaran+nilai+indeks+plastisitas+tanah.+Pasir+merupakan+material%0D%0Adeposit+alam+yang+sangat+banyak+di+provinsi+Lampung+namun+penelitian+dan+studi%0D%0Auntuk+perbaikan+tanah+dengan+material+pasir+masih+minim.+Sifat+fisik+pada+tanah%0D%0Apasir+yang+cenderung+berlawanan+dengan+tanah+lempung+merupakan+studi+kasus%0D%0Ayang+perlu+diteliti.+Kuat+geser+dan+indeks+plastisitas+merupakan+dua+elemen+yang%0D%0Aberubah+ketika+dilakukan+pencampuran+dua+jenis+tanah+tersebut.%0D%0AUntuk+mengetahui+seberapa+besar+pengaruh+fraksi+lempung+pada+pasir+terhadap%0D%0Aperubahan+nilai+indeks+plastisitas+dan+kuat+geser+dapat+dibuktikan+di+laboratorium%0D%0Adengan+cara+membuat+sampel+tanah+dengan+substitusi+fraksi+lempung+sampai%0D%0Adengan+50%25+dari+total+berat+tanah.+Sebelum+dilakukan+pengujian+utama+sampel%0D%0Adiletakkan+dalam+wadah+kedap+air+agar+kadar+air+menjadi+homogen+dalam+sampel%0D%0Atanah.+Pengujian+utama+pada+studi+ini+adalah+pengujian+kuat+geser+langsung+dan%0D%0Abatas-batas+Atterberg.%0D%0AHasil+pengujian+menunjukkan+kenaikan+nilai+indeks+plastisitas+seiring+kenaikan%0D%0Afraksi+lempung+pada+pasir.+Kenaikan+dimulai+pada+persentase+25%25+lempung+dengan%0D%0API+sebesar+1%2C03%25+dan+meningkat+terus+sampai+17%2C7%25+pada+fraksi+lempung+50%25.%0D%0ASelain+PI+nilai+kohesi+juga+meningkat+dengan+rata-rata+18%25+setiap+10%25+kenaikan%0D%0Afraksi+lempung.+Nilai+sudut+geser+sebaliknya+menurun+sebesar+31%25.+Perubahan+nilai%0D%0Afraksi+lempung+pada+pasir+menunjukkan+perubahan+signifikan+pada+beberapa%0D%0Aparameter+kuat+geser+tanah+dan+indeks+plastisitas.%0D%0AKata+kunci%3A+kuat+geser+tanah%2C+indeks+plastisitas%0D%0A%0D%0A%0D%0Aabstrak+bahasa+inggris%0D%0A%0D%0AOne+of+the+ground+that+is+commonly+found+in+Indonesia+is+ground+clays.+Clays+in%0D%0ASoutheast+Asia+consists+of+layers+of+soft+clays.+Clay+soil+has+some+physical%0D%0Aproperties+of+less+support+for+the+construction+of+one+of+these+is+the+nature+of+high%0D%0Ashrink+swell.+The+nature+of+cotton+shrinkage+is+influenced+by+the+magnitude+of+the%0D%0Avalue+soil+plasticity+index.+The+sand+is+a+natural+deposit+of+material+that+is+very%0D%0Amuch+in+Lampung+province+but+research+and+study+for+improvement+of+soil+with%0D%0Asand+material+is+still+minimal.+Physical+properties+on+soil+sand+tends+to+be+the%0D%0Aopposite+of+soil+clays+is+a+case+study+that+needs+to+be+examined.+Strong+shear+and%0D%0Aplasticity+index+are+the+two+elements+that+change+when+done+mixing+the+two+types%0D%0Aof+land.%0D%0ATo+know+how+much+influence+the+fraction+of+clay+in+the+sand+against+changes+in%0D%0Aplasticity+index+value+and+soil+shear+can+be+proven+in+the+lab+with+the+how+to+make%0D%0Asoil+samples+with+fractional+substitution+clays+up+to+50%25+of+the+total+weight+of+the%0D%0Asoil.+The+main+testing+done+before+the+sample+is+placed+in+a+container+is+watertight%0D%0Aso+that+water+levels+be+homogeneous+in+soil+samples.+The+main+testing+in+this+study%0D%0Ais+testing+the+strong+direct+shear+and+Atterberg+limits.%0D%0AThe+test+results+showed+the+increase+in+plasticity+index+value+as+the+increase+in+the%0D%0Afraction+of+clay+in+the+sand.+The+hike+began+in+the+percentage+of+25%25+with+PI+of%0D%0Aclays+1.03%25+and+increased+steadily+to+17.7%25+on+50%25+clay+fraction.+In+addition+to%0D%0Athe+PI+value+of+cohesion+also+increased+by+an+average+of+18%25+every+10%25+increase%0D%0Ain+the+fraction+of+clay.+The+value+of+the+shear+angle+otherwise+declined+by+31%25.%0D%0AChange+the+value+of+the+fraction+of+clay+in+the+sand+showed+significant+changes+in%0D%0Asome+parameters+of+the+soil+shear+strength+and+strong+plasticity+index.%0D%0AKeywords+%3A+soil+shear+strenght%2C+plasticity+index&rft.publisher=UNIVERSITAS+LAMPUNG&rft.date=2016-04-28&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F22322%2F1%2FABSTRAK%2520%2528ABTSRACT%2529.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F22322%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F22322%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++RENOL+PANGIDOAN+RAMBE%2C+(0915011078)++(2016)+PENGARUH+FRAKSI+LEMPUNG+PADA+PASIR+TERHADAP+NILAI+KOHESI+TANAH+DAN+INDEKS+PLASTISITAS.++UNIVERSITAS+LAMPUNG%2C+FAKULTAS+TEKNIK.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F22322%2F