?url_ver=Z39.88-2004&rft_id=1317041017&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=ANALISA+PENGARUH+PENAMBAHAN+VARIASI+BUBUK+ANDESIT%0D%0ATERHADAP+KARAKTERISTIK+KUAT+TEKAN+MORTAR&rft.creator=HERULLAH+%2C+1317041017&rft.subject=QC+Physics&rft.description=Telah+dilakukan+penelitian+mengenai+analisa+pengaruh+penambahan+variasi+bubuk%0D%0Aandesit+terhadap+karakteristik+kuat+tekan+mortar.+Penelitian+ini+bertujuan+untuk%0D%0Amengetahui+pengaruh+penambahan+bubuk+andesit+terhadap+sifat+dan+kekuatan%0D%0Amortar+dengan+membandingkan+mortar+tanpa+penambahan+bubuk+andesit.%0D%0AKomposisi+variasi+bubuk+andesit+yang+ditambahkan+yaitu+berturut-turut+10%25%2C+20%25%2C%0D%0A30%25%2C+40%25+dan+50%25+dari+berat+semen.+Lama+perendaman+7%2C+14+dan+28+hari.+Hasil%0D%0Apengujian+menunjukkan+bahwa+nilai+kuat+tekan+mortar+pada+masing-masing+umur%0D%0Abenda+uji+dengan+penambahan+bubuk+andesit+lebih+tinggi+dibandingkan+kuat+tekan%0D%0Amortar+tanpa+penambahan+bubuk+andesit.+Kuat+tekan+tertinggi+pada+penambahan%0D%0Abubuk+andesit+waktu+perendaman+7%2C+14+dan+28+hari+berturut-turut+yaitu+sebesar+11%2C8%0D%0AMPa%2C+14%2C3+MPa+dan+17%2C4+MPa.+Nilai+kuat+tekan+mortar+tanpa+penambahan+bubuk%0D%0Aandesit+dengan+waktu+perendaman+yang+sama+sebesar+5%2C6+MPa%2C+7%2C56+MPa+dan+11%2C0%0D%0AMPa.+Kadar+optimum+penambahan+bubuk+andesit+sebesar+30%25+dari+berat+semen.%0D%0AHasil+menunjukkan+semakin+berkurangnya+porositas+yang+terbentuk+pada+mortar%2C%0D%0Amaka+densitas+mortar+akan+semakin+tinggi+dan+semakin+padat%2C+dimana+semakin%0D%0Apadatnya+mortar+yang+dibuat%2C+maka+tingat+absorbsi+yang+dihasilkan+semakin+kecil.%0D%0AHasil+pengujian+karakterisasi+X-Ray+Fluorescence+menunjukan%2C+kadar+unsur+kimia%0D%0ASi%2C+Al%2C+Fe+meningkat+seiring+dengan+bertambahnya+persentase+bubuk+andesit+yang%0D%0Aditambahkan+pada+campuran+mortar%2C+sedangkan+kadar+unsur+Ca+semakin+menurun%0D%0Aseiring+bertambahnya+persentase+bubuk+andesit+yang+ditambahkan+pada+campuran%0D%0Amortar.+Hasil+X-Ray+Diffraction+memperlihatkan+fasa+coestite+dan+hematite+setelah%0D%0Akalsinasi+suhu+900+oC.%0D%0AKata+Kunci+%3A+bubuk+andesit%2C+kuat+tekan%2C+porositas%2C+umur+uji.%0D%0A%0D%0A%0D%0AABSTRACT%0D%0A%0D%0A%0D%0A%0D%0AThe+effect+of+andesite+powder+variety+addition+on+the+properties+of+the+mortar%0D%0Acompressive+strength+was+carried+out.+This+study+aims+to+investigate+the+effect+of%0D%0Aandesite+powder+variety+addition+on+the+properties+of+mortar+compressive+strength%0D%0Awhich+is+added+on+mortar+blend+by+comparing+mortar+without+the+addition+of%0D%0Aandesite+powder.+Mortar+with+various+andesite+powder+contents+(10%2C+20%2C+30%2C+40+and%0D%0A50+%25+by+weight+respectively)+as+partial+replacement+of+portland+cement+at+the+age%0D%0Aof+7%2C+14+and+28+days+curing.+The+results+show+that+the+compressive+strength+of+each%0D%0Aages+with+andesite+powder+addition+is+higher+than+mortar+without+the+addition+of%0D%0Aandesite+powder.+The+highest+compressive+strength+is+11.8%2C+14.3+and+17.4+MPa%0D%0Arespectively+5.6%2C+7.56+and+11.00+MPa+regarding+to+the+mortar+without+andesite%0D%0Apowder.+Therefore+30%25+seems+to+be+the+optimal+as+partial+replacement+cement+level.%0D%0AThe+results+show+with+decreasing+porosity+on+the+mortar%2Cthe+density+will+be+greater%0D%0Aand+solid%2C+it+will+decrease+the+absorption.+The+results+of+X-Ray+Fluorescence%0D%0Aindicate+that+the+chemical+element+of+Si%2C+Al+and+Fe+increase+with+increasing+the%0D%0Adosage+of+andesite+powder+which+is+added+on+mortar+blend.+Consequently+the+Ca%0D%0Aelement+may+decrease+by+addition+of+andesite+powder+on+mortar+endlessly.+The+XRay%0D%0ADiffraction+shows+the+coestite+and+hematite+phase+after+temperature+900+oC%0D%0Acalcination.%0D%0AKey+words%3A+andesite+powder%2C+compressive+strength%2C+porosity%2C+curing+time.&rft.publisher=FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM&rft.date=2017-12-13&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F29567%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F29567%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F29567%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++HERULLAH+%2C+1317041017++(2017)+ANALISA+PENGARUH+PENAMBAHAN+VARIASI+BUBUK+ANDESIT+TERHADAP+KARAKTERISTIK+KUAT+TEKAN+MORTAR.++FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F29567%2F