?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PERILAKU+LOADING+UNLOADING+PADA+TANAH+ORGANIK+YANG%0D%0ADISUBTITUSI+MATERIAL+BERGRADASI+KASAR+(PASIR)&rft.creator=ARI+FIRMANSYAH%2C+0915011102&rft.subject=+&rft.description=abstrak+indonesia%0D%0ASuatu+tanah+di+lapangan+pada+suatu+kedalaman+tertentu+telah+mengalami+tekanan%0D%0Aefektif+maksimum+akibat+berat+tanah+diatasnya.+Tekanan+efektif+overburden+maksimum+ini%0D%0Amungkin+sama+atau+lebih+kecil+dari+tekanan+overburden+pada+saat+pengambilan+contoh+tanah.%0D%0APada+saat+diambil%2C+contoh+tanah+tersebut+terlepas+dari+tekanan+overburden+yang%0D%0Amembebaninya+selama+ini+sebagai+akibatnya+maka+tanah+tersebut+akan+mengembang.+Apabila%0D%0Abeban+total+yang+diberikan+pada+saat+percobaan+adalah+lebih+besar+dari+tekanan+efektif%0D%0Aoverburden+maksimum+yang+pernah+dialami+oleh+tanah+tersebut+maka+perubahan+angka+pori%0D%0Ayang+terjadi+adalah+lebih+besar.Berdasarkan+hal+tersebut+maka+perlu+dilakukan+pengujian%0D%0Adengan+cara+membebani+contoh+tanah+melebihi+tekanan+overburden+maksimumnya+atau%0D%0Adinamakan+loading+lalu+beban+tersebut+diangkat+(unloading)+dan+diberikan+pembebanan%0D%0Akembali+(reloading).%0D%0ADalam+penelitian+ini+dilakukan+pengujian+karakteristik+kimia+tanah+dan+sifat+fisik%0D%0Atanah%2C+serta+pengujian+konsolidasi+pada+tanah+organik+yang+disubtitusi+material+bergradasi%0D%0Akasar+dengan+memperhatikan+dan+membandingkan+perilaku+tanah+pada+saat+diberi%0D%0Apembebanan+(loading)+dan+tanpa+pembebanan+(unloading).+Prosedur+pengujian+konsolidasi%0D%0Adengan+melakukan+pembebanan+dilakukan+untuk+melihat+koefisien+konsolidasi+(Cv)+yang%0D%0Aterjadi+dan+indeks+pemampatan+(Cc)%2C+serta+indeks+pemampatan+kembali+(Cr)+pada+ketiga%0D%0Asampel+yaitu+sampel+A%2C+B%2C+dan+C+dengan+masing-masing+persentase+campuran+pasir+sebesar%0D%0A5%25%2C+10%25%2C+dan+15%25.%0D%0APada+prosedur+pengujian+pada+ketiga+sampel+ini+didapatkan+hasil+bahwa+pada+sampel+B%0D%0Ayakni+campuran+pasir+sebesar+10%25+memiliki+indeks+pemampatan+(Cc)+dan+indeks%0D%0Apemampatan+kembali+(Cr)+terendah%2C+sedangkan+pada+pengujian+koefisien+konsolidasi+(Cv)%0D%0Asampel+B+memiliki+waktu+penurunan+yang+cukup+singkat.+Hal+ini+dapat+dilihat+dari+diagram%0D%0Avariasi+hubungan+persentase+pasir+dengan+Cv+diperoleh+hasil+sebesar+1%2C1+cm%C2%B2%2Fdetik.+Hasil%0D%0Aterbaik+dalam+penelitian+ini+adalah+sampel+dengan+kecepatan+proses+penurunan+tercepat+dan%0D%0Abesaran+penurunan+terkecil+terdapat+pada+sampel+dengan+nilai+Cv%2C+Cc+dan+Cr+terendah.%0D%0AKata+kunci+%3ATanah+Organik%2C+Loading+Unloading%2C+Penurunan+Tanah%0D%0A%0D%0Aabstrak+inggris%0D%0ASoil+in+the+field+in+a+certain+depth+had+undergone+maximum+effective+pressure%0D%0Abecause+of+soil+weight+above+it.+This+maximum+effective+overburden+pressure+may+be%0D%0Aequal+to+or+less+than+overburden+pressure+when+the+organic+soil+sample+was+taken.%0D%0AWhen+the+organic+soil+sample+was+taken%2C+it+was+released+from+its+overburden+pressure%0D%0Aso+that+the+sample+will+expand.+When+the+total+burden+given+at+the+experiment+is%0D%0Abigger+than+the+maximum+effective+overburden+pressure+it+had+ever+undergone%2C+the%0D%0Achange+of+pore+value+will+be+bigger.+Base+on+that+thing+it+need+to+conduct+a+test+by%0D%0Aweighting+the+soil+sample+over+the+maximum+overburden+pressure+or+named+as+loading%2C+then%0D%0Athe+weight+lifted+(unloading)+and+given+another+weight+(reloading).%0D%0AIn+this+experiment%2C+it+conduct+a+chemical+soil+characteristic+test+and+physical+soil%0D%0Aproperties%2C+also+consolidation+on+organic+soil+test+that+substituted+by+hard+degradated%0D%0Amaterial+by+seeing+and+comparing+soil+behaviour+when+its+being+given+the+weight+(loading)%0D%0Aand+without+the+weight+(unloading).+The+consolidation+procedure+test+by+doing+the+weighting%0D%0Astarted+to+see+the+consolidation+coefficient+(Cv)+that+happens+and+the+repetation+compression%0D%0Aindex+(Cr)+from+three+samples+which+is+sample+A%2C+B%2C+and+C+with+each+sand+mixture%0D%0Apercentage+of+5%25%2C+10%25%2C+and+15%25.%0D%0AOn+the+test+procedure%2C+from+this+three+samples+gets+the+result+that+on+sample+B+which+is%0D%0Asand+mixture+of+10%25+have+the+lowest+compression+index+(Cc)+and+repetation+compression%0D%0Aindex+(Cr)%2C+while+the+consolidation+coefficient+test+(Cv)+sample+B+has+the+fastest%0D%0Aconsolidation+time.+This+things+can+be+seen+from+the+connection+of+sand+percentage+and+Cv%0D%0Avariation+diagram+and+get+the+result+of+1%2C1+cm2%2Fsecond.+The+best+result+in+this+test+is+the%0D%0Asample+with+the+fastest+consolidation+process+speed+and+the+lowest+consolidation+value+on%0D%0Asample+with+the+lowest+Cv%2C+Cc%2C+and+Cr+value.%0D%0AKeywords%3A+Organic+soil%2C+Loading+Unloading%2C+Soil+Consolidation&rft.publisher=Fakultas+Teknik&rft.date=2014-09-29&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5295%2F1%2F2.%2520ABSTRACT.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5295%2F2%2F3.%2520ABSTRAK.pdf&rft.format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