PENGARUH PENAMBAHAN POTONGAN BAN BERSERAT NILON DAN SEMEN PORTLADN TERHADAP NILAI CBR TANAH LEMPUNG

THE EFFECT OF ADDITIONAL CUTTING OF NYLON FIBER TIRES AND PORTLAND CEMENT ON CBR VALUE OF CLAY SOIL

Authors

  • Dede oktaris milano Dede Universitas Palangkaraya
  • Fatma Sarie Universitas Palangka Raya
  • M Ikhwan Yani Universitas Palangka Raya

Keywords:

Stabilisasi, California Bearing Ratio, Potongan Ban Berserat Nilon, Semen, Tanah Lempung.

Abstract

 Berdasarkan hasil survei lapangan di Desa Tewang Rangkang, Kecamatan Pulau Malan, Kabupaten Katingan kondisi jalan didaerah tersebut didominasi oleh tanah lunak. Tanah lunak sangat berpengaruh didalam pada pembangunan kontruksi pondasi jalan dan konstruksi pondasi bangunan. Penelitian ini bertujuan untuk menganalisis hasil stabilisasi tanah dengan penambahan potongan ban berserat nilon dan semen portland dengan variasi penambahan campuran 5% semen portland dan 5%; 7,5%; 10%; 12%; 15% untuk potongan ban berserat nilon dengan masa pemeraman 7 Hari. Hasil pengujian sifat fisik tanah asli diperoleh nilai, kadar air (w) = 44,12%; berat isi =1,30 g/cm3; berat jenis(Gs) = 2,70; LL = 41,00; PL =24,04; IP =16,96; SL =15,89. Menurut sistem USCS dari hasil pemeriksaan batas cair (LL) dan indeks plastisitas (PI) didapat bahwa diklasifikasikan sebagai tanah berlempung dalam kelompok A-7-5 (8). Hasil  pengujian sifat mekanik tanah asli menunjukan bahwa nilai CBR tanah asli 2,09%; berat isi kering  = 1,572%; kadar air optimum (OMC) = 19,82%. Campuran potongan ban berserat nilon dan semen portland berdampak pada peningkatan nilai CBR. Penambahan variasi campuran 5% semen portland dan 5%; 7%; 10%; 12,5%; 15% menghasilkan nilai CBR rencana yang meningkat sebesar 2,90%; 4,90%; 4,08%; 3,40%; 2,20%; 2,15% di pemeraman 7 hari. Nilai CBR terbesar terjadi pada penambahan semen portland 5% dan 5% potongan ban berserat nilon, pada pemeraman 7 hari yaitu sebesar 5,30%, CBR meningkat 154,55% dari nilai CBR tanah asli.

 

Based on the results of a field survey in Tewang Rangkang Village, Pulau Malan District, Katingan Regency, the road conditions in the area are dominated by soft soil. Soft soil is very influential in the construction of road foundations and construction of building foundations. This study aims to analyze the results of soil stabilization with the addition of pieces of nylon fiber tires and portland cement with variations in the addition of a mixture of 5% portland cement and 5%; 7.5%; 10%; 12%; 15% for nylon fiber tires with a curing period of 7 days. The results of testing the physical properties of the original soil obtained values, water content (w) = 44.12%; fill weight = 1.30 g/cm3; specific gravity (Gs) = 2.70; LL = 41.00; PL = 24.04; IP = 16.96; SL = 15.89. According to the USCS system, the results of the examination of the liquid limit (LL) and the plasticity index (PI) were found to be classified as loamy soils in group A-7-5 (8). The results of testing the mechanical properties of the original soil showed that the CBR value of the original soil was 2.09%; dry weight (γdmax) = 1.572%; optimum water content (OMC) = 19.82%. The mixture of nylon fiber tires and portland cement has an impact on increasing the CBR value. The addition of a mixture variation of 5% portland cement and 5%; 7%; 10%; 12.5%; 15% resulted in an increased plan CBR value of 2.90%; 4.90%; 4.08%; 3.40%; 2.20%; 2.15% at 7 days curing. The largest CBR value occurred in the addition of 5% portland cement and 5% nylon fiber tire pieces, at 7 days curing which was 5.30%, the CBR increased by 154.55% from the original soil CBR value.

References

Badan Standardisasi Nasional. 2011. Cara Uji CBR (California Bearing Ratio) lapangan, Kota Jakarta.

Bowles, Joseph E. Johan . Helnim. 1991. Sifat-sifat Fisis Geoteknis Tanah (Mekanika Tanah). PT. Erlangga. Jakarta, 151 Halaman

Braja, Noor Endah, Indrasurya. 1988. Mekanika Tanah (Prinsip-prinsip Rekayasa Geoteknis) PT. Erlangga. Jakarta, 291 Halaman

Das, B. M. 1998. Mekanika Tanah (Prinsip-prinsip Rekayasa Geoteknik), Erlangga : Jakarta

Hardiyatmo, Hary Christady. 1992 . Mekanika Tanah 1. PT. Gramedia Pustaka Utama . Jakarta

Nataraj, M.M., 1997 “ Strength and defomation properties of soil reinforced with Fibrous” Journal of Geosnthetics International, Vo.4,no.1

Niken S.Surjandari. 2007. Pengaruh Penambahan Potongan Ban Berserat Nilon Terhadap Nilai CBR Tanah Lempung. Kota Surakarta , Universitas Sebelas Maret : Surakarta

Robert F. Craig Terjemahan oleh Budi Susilo S. 1994. Mekanika Tanah. Jakarta : Erlangga

Downloads

Published

2021-12-20