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Baca Juga : STABILISASI MENGGUNAKAN ASPAL EMULSI DAN PENGARUHNYA TERHADAP NILAI CBR TANAH GLEE GEUNTENG ACEH BESAR (Ani Safitri, 2019) ,

Baca Juga : STUDI KUAT TEKAN DAN KUAT LENTUR PASTA SEMEN CAMPURAN DENGAN TANAH DIATOMAE (Sri Hayati, 2018) ,

dari glee geunteng kecamatan peukan bada kabupaten aceh besar. penelitian ini dilakukan dengan cara pencampuran tanah glee geunteng dan tanah diatomae pada variasi 0%, 5%, 10%, 15%, dan 20% dari berat kering tanah. pengujian yang dilakukan pada penelitian ini terdiri dari pengujian berat jenis, batas cair, batas plastis, pembagian butiran, dan pemadatan (standard proctor), serta pengujian cbr dan pengembangan pada uji cbr. tanah glee geunteng menurut klasifikasi aashto tergolong ke dalam kelompok a-6 (3) dan menurut uscs termasuk ke dalam golongan sc, dimana batas cair (ll) sebesar 28,76%, dan indeks plastis (pi) 11,93%. penggunaan tanah diatomae sebagai bahan campuran pada tanah glee geunteng berpengaruh pada batas-batas atterberg, nilai cbr dan nilai pengembangan. nilai berat volume kering maksimum (?d maks) tanah glee geunteng yang diperoleh sebesar 2,044 gr/cm3 dan nilai kadar air optimum (omc) sebesar 11,39%. hasil penelitian memperlihatkan bahwa pada tanah asli hingga campuran tanah diatomae 20% untuk pengujian cbr tanpa rendaman mengalami penurunan nilai cbr dari 35,96% menjadi 31,65%, pengujian cbr rendaman juga mengalami penurunan nilai cbr dari 15,57% menjadi 6,98%. sifat swelling tanah mengalami peningkatan dari 0,214% menjadi 0,671% pada persentase penambahan 20% tanah diatomae. kata kunci: stabilisasi, tanah diatomae, cbr, swelling final project the effect of diatomae soil addition to cbr values and swelling properties of glee geunteng soil aceh besar muhammad ghiffari ritonga npm.1404101010071 civil engineering study program department of civil engineering-faculty of engineering syiah kuala university abstract soil as a place of construction must have a strength to resist the load. soil sometimes cannot be used directly because it has limited physical and mechanical properties, it needs some treatments called stabilization. stabilization can be done in two ways, namely mechanical and chemical stabilization, by adding certain additive and admixtures. in this study, the additive used was diatomae soil. diatomae soil is a natural pozzolan material that is included in the type of scm (supplementary cementing materials). object of this study is soil from glee geunteng, peukan bada subdistrict, aceh besar regency. this research was conducted by mixing natural soil from glee geunteng and diatomae soil at 5%, 10%, 15% and 20% from the dry weight of the soil. experiment were conducted in this study consist of specific gravity, liquid limit, plastic limit, grain size analysis, standard proctor to determine the optimum moisture content (omc) and maximum dry density, cbr test, and swelling properties on cbr test. glee geunteng soil were classified as a-6 group index 3 by aashto and according to uscs as sc group. the use of diatomae soil as an additive in the glee geunteng soil affects the atterberg limits, cbr value and swelling properties. the maximum dry density (?d max) of the glee geunteng soil obtained was 2.044 gr/cm3 and the optimum moisture content (omc) value was 11.39%. the results show that on natural soil to 20% diatomae soil mixture for unsoaked cbr decreased in value of the cbr from 35.96% to 31.65%, on soaked cbr also decreased the cbr value from 15.57% to 6.98%. the swelling properties for natural soil increased from 0.214% to 0.671% by adding 20% diatomae soil. keywords: stabilization, diatomae soil, cbr,

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