Perancangan Laboratorium campuran Semi Flexible Pavement dengan penggunaan Additive Sikament-NN pada Mortar dan Gilsonite pada aspal

SIAGIAN, Flora Deviyanti, Dr.Ir. Latif Budi Suparma, M.Sc

2007 | Tesis | Magister Sistem dan Teknik Transportasi

Perkerasan dalam hubungannya dengan transportasi harus mampu melayani lalulintas yang lewat diatasnya. Perkerasan tersebut dituntut memenuhi persyaratan aman, nyaman dan ekonomis. Flexible pavement merupakan jenis konstruksi perkerasan yang paling banyak digunakan. Biaya yang dikeluarkan untuk pembuatan Flexible pavement cukup tinggi dimana harga aspal yang semakin tinggi. Oleh karena itu, penelitian ini mencoba mencari alternalif lain untuk merancang perkerasan yang lebih baik lagi tetapi memiliki nilai yang ekonomis, yaitu mencoba merancang semi-flexible pavement dengan menggunakan additive Sikament-NN pada mortar dan Gilsonite pada aspal dengan tujuan mengetahui kinerja dan merancang suatu konstruksi perkerasan yang mampu melayani beban lalulintas dengan baik. Penelitian dilakukan dengan beberapa tahap. Pada tahap pengujian pendahuluan dilakukan perancangan campuran, baik gradasi campuran maupun variasi campuran. Pada tahap penelitian utama dibuat benda uji dengan variasi kadar aspal 2,5%, 3,0% dan 3,5% dengan penambahan additive Sikement-NN dengan variasi kadar 1,2%, 1,3%, 1,4% dan 1,5% pada mortar dan Gilsonite 0,3% pada aspal. Benda uji Open graded asphalt (OGA) dengan tebal 7,5 cm dan diameter 10 cm dibuat terlebih dahulu kemudian di-grout dengan mortar. Analisa penelitian dilakukan tehadap Marshall properties dan nilai ITS yang uji setelah berumur 14 hari. Hasil penelitian menunjukkan nilai density tertinggi terjadi pada kadar aspal 3,5% dengan kadar Sikament-NN 1,5% yaitu 2,092 gr/cm3 dan terendah pada kadar aspal 3,5% dengan kadar Sikament-NN 1,2% yaitu 1,956 gr/cm3. Nilai stabilitas tertinggi terjadi pada kadar aspal 3,5% dengan kadar Sikament-NN 1,4% yaitu 1824 kg dan terendah pada kadar aspal 3,5% dengan kadar Sikament-NN 1,2% yaitu 888 kg. Nilai flow tertinggi terjadi pada kadar aspal 3,0% dengan kadar Sikament-NN 1,5% yaitu 1,6 mm dan terendah pada kadar aspal 2,5% dan 3,0% dengan kadar Sikament-NN 1,4% yaitu 1,1 mm. Nilai MQ tertinggi terjadi pada kadar aspal 2,5% dengan kadar Sikament-NN 1,4% yaitu 1543,9 kg/mm dan terendah pada kadar aspal 3,5% dengan kadar Sikament-NN 1,2% yaitu 610,1 kg/mm. Nilai ITS tertinggi terjadi pada kadar aspal 2,5% dengan kadar Sikament-NN 1,3% yaitu 1144,6 kPa, sedangkan terendah pada kadar aspal 3,5% dengan kadar Sikament-NN 1,3% yaitu 842,1 kPa. Semi-flexible pavement cocok untuk digunakan untuk jalan dengan beban gandar yang besar contohnya untuk jalan luar kota karena perkerasan tersebut memiliki nilai kekakuan yang lebih tinggi bila dibandingkan dengan flexible pavement. Campuran semi-flexible yang paling baik adalah pada kadar aspal 3,0% dengan Sikament-NN 1,2% dan 1,3%.

Pavement, in its relation with the transportation, has to able to serve the traffic. The Pavement is claimed to fulfill the rules and regulations of a safe, comfort, and economical conditions. Flexible Pavement represents the type of pavement construction which is at most used. The cost that released to make the Flexible pavement is high, where asphalt price is expensive. Therefore, this research try to look for another alternative to design a better pavement but owning economic value, that is try to design the semi-flexible pavement by mixing additive Sikament-NN into mortar and Gilsonite into asphalt called semi-flexible pavement. The purposes of this research are to know the performance of pavement and to design a pavement construction, which will be able to serve the traffic pavement better. The research conducted in a few phase. At the phase of preliminary examination, by conducting a setting up mixture plan, in mixture gradation and also in mixture variation. The main research, spesiments were manufactured with asphalt content variation of 2.5%, 3.0%, and 3.5%, added with additive Sikament-NN with content variation of 1.2%, 1.3%, 1.4%, and 1.5% in mortar and 0.3% Gilsonite in asphalt. Open Graded asphalt (OGA) speciments were manufacture earlier and subsequenty grouted with mortar. The research analize was conducted on Marshall properties and the value from Indirect Tensile Srength (ITS), which were tested after curing 14 days. The results of this research showed that the highest density value that occured at 3.5% of asphalt content with 1.5% of Sikament-NN content that is 2.092 gr/cm3 and the lowest value was at 3.5% of asphalt content with 1.2% of Sikament-NN content that is 1.956 gr/cm3. The highest of stability value was occured at 3.5% of asphalt content with 1.4% of Sikament-NN content that is 1824 kg and the lowest is at 3.5% of asphalt content with 1.2% of Sikament-NN content that is 888 kg. The highest of flow value was at 3.0% of asphalt content with 1.5% of Sikament-NN content that is 1.6 mm and the lowest was at 2.5% of asphalt content with 1.4% of Sikament-NN content that is 1.1 mm. The highest of MQ value that occured on 2.5% of asphalt content with 1.4% of Sikament-NN content that is 1543.9 kg/mm and the lowest was at 3.5% of asphalt content with 1.2 % of Sikament-NN content that is 610.1 kg/mm. The highest of Indirect Tensile Srength (ITS) value was at 2.5% of asphalt content with 1.3% of Sikament-NN content that is 1144.6 kPa, while the lowest was at 3.5% of asphalt content with 1.3% of Sikament-NN content that is 842.1 kPa. Semi-flexible Pavement is suited for a road with the heavy axle load, for example is the road of external town, because the pavement owns the higher level of rigid value if compared with the flexible pavement. The better of semi-flexible pavement were manufactured with asphalt content 3.0% with 1.2% and 1.3% of Sikament-NN content.

Kata Kunci : Konstruksi Perkerasan,Semi Flexible Pavement,Sikament NN,OGA, semi-flexible pavement, Sikament-NN, Gilsonite, Open Graded Asphalt (OGA)