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Leksminingsih Leksminingsih
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Materials Science & Nanotechnology

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PEMBUATAN ASPAL EMULSI YANG TAHAN-SIMPAN Leksminingsih Leksminingsih
Jurnal Kimia Terapan Indonesia Vol 10, No 1-2 (2000)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4882.044 KB) | DOI: 10.14203/jkti.v10i1-2.181

Abstract

Cold Mixed Asphalt Emulsion generally used for roadmaintenance, such as film Slurry Seal to cover cracked roadsurface, Patching, Dense Graded Emulsion Mixed (DGEM) andOpen Graded Emulsion Mixed (OGEM) for road pavement.One of several obstacles using asphalt emulsion, is the shorttime of storage stability, less than three months. This problem hasan effect to road maintenance especially for District road thathave light traffic.Asphalt emulsion is made 0f: bitumen, kerosene, emulsifier,HCI, CaCl, and watel: Asphalt emulsion has pH of 2,5 to 4%.To mix the component of asphalt emulsion a Colloid Millequipment is used, which has a rotation of 1000 until 6000 rpm,and has a gap between rotor and stator of250 um unti/500 um,so the asphalt emulsion product has a particle > 250 ~Wl.To make a longer storage stability oj asphalt emulsion, usingtwo method s i.e:1. By experiment, to make various contents of asphalt emulsionbase materials and do the test using a standard test oj ASTMD 244-90 until six months.2. To make various contents of asphalt emulsion base materials,not only measure the rate stability by Stoke 'sformula, but alsoperform the test until six months.The result of method 1(1) the components of asphalt emulsionare: 65% of bitumen, 2,8% of kerosene, 0,48% of emulsifier.0,48% of HCI, 0,3% of CaCl, and 30,94% of water, after sixmonths the test result still hove comply with the spesijication ofAASHTO M 208.The result of method 2(2), the rate stabiliy have aroun d of18 x 10-7 until 35 x 10-7 cm/second,From ten formulas using method 2, three still stand until sixmonths. The selected formula was made in a drum, and was testeduntil six months.
PENGKAJIAN KINERJA SLAG DAN BATU GAMPING PADA PERKERASAN JALAN Leksminingsih Leksminingsih
Jurnal Jalan-Jembatan Vol 27 No 3 (2010)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

Pavement materials commonly consist of two important components i.e aggregate ad asphalt. Aggregate with good quality and properties is required for road pavement which directly accommodate traffic load and distribute to layers underneath. In fact, there are some areas where aggregate standard for pavement material is unavailable, alternatively, local materials such as limestone, slag are used. The method used in the research is laboratory experiment by making four kinds of asphalt mix from slag and limestone. Slag and limestone which meet the requirements of standard aggregate can be used as alternative aggregate for asphalt mix. The performance of pavement skid resistance using slag is better compared to limestone. Keyword : road pavement, standard aggregate, slag, limestone, asphalt
PENELITIAN JOINT SEALANT UNTUK SAMBUNGAN PERKERASAN BETON SEMEN Leksminingsih Leksminingsih
Jurnal Jalan-Jembatan Vol 26 No 2 (2009)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

Joint sealant is used for concrete pavement joints. To fulfill joint sealant requirements, laboratory tests have been carried out except weathering test therefore for this purpose, experiments by simulation on concrete pavement is required in order to conform to all requirements for use in sealing joints in concrete pavements. Joint sealant is made of asphalt pen 60 added by elastomeric or platomeric materials which available in Indonesia. The mixture should be heated at high temperature with a minimum of 170°C. The results of laboratory tests of sealing compound, i.e. penetration, flow, bond, curing and durability were obtained. (ASTM 3405,2005). The research has found out joint sealant mixture which conforms to ASTM requirementsconsisting of asphalt pen 60 with 3,5% elastomer (natural rubber RSS1 type) and 8% plastomer (plastic). Specified joint sealant can be used for concrete pavement..observation. Field experiment of joint sealant was also performed in a road link of Tambun – Cimuning, Bekasi.After three month observations, joint sealant showed no failure, or loose materials, but the application of other joint sealant as comparison reached failure measurement more than 80%. The important recommendation for joint sealant in application is surface preparation. Pavement surface should be clean and dry so that the sealant specimens will be more adhesive. Keywords : joint sealant. masterbatch rubberized bitumen.,elastomer. plastomer. concrete pavement
PENGARUH PENAMBAHAN KATALIS BEKAS (SPENT CATALYST) TERHADAP KINERJA CAMPURAN BERASPAL Leksminingsih Leksminingsih
Jurnal Jalan-Jembatan Vol 25 No 1 (2008)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

Research on the use of waste materials has been conducted to find out whether they can be useful for road pavements. Claimed that waste materials such as spent catalyst, slag, fly ash, etc. can be directly used in asphalt mixture by certain process. Waste material used in the research was Spent catalyst from Pertamina Balongan, Cirebon. Laboratory and field experiments were performed using AC wearing course, blended with 5% -10% Spent Catalyst. By adding 5% Spent Catalyst exhibits 28.6% higher Marshall stabilities and 22.2% higher Dynamic Stabilities than that of standard mixes. For field experiments 5% spent catalyst was used and the results showed that 31.3% higher Marshall stability, 21.4% higher Dynamic Stability and 26.1% higher Modulus than those of standard mixes. Field experiments were carried out at km 16.428 in Cileunyi Road, Bandung, West Java. After six months, in slow lane and fast lanes were found 21.9% and 47.4% lower rutting depth was 21,9% and 47,4% lower than that of standard pavement in the pavement with spent catalyst than in standard pavement. From the above results, it can be concluded that spent catalyst can be used to increase the asphalt mix performance mainly in increasing Stiffness in pavements Keywords : Spent Catalyst, AC Wearing Specification, Marshall stability, Dynamic stability, Modulus Resilient.
PENGARUH PEMBERIAN BAHAN TAMBAH KATALIS BEKAS (SPENT CATALYST) DAN FILLER SLAGTERHADAP CAMPURAN BETON SEMEN UNTUK PERKERASAN JALAN Leksminingsih Leksminingsih
Jurnal Jalan-Jembatan Vol 24 No 2 (2007)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

Local/waste materials have commonly been used, however, they are now being evaluated and need further research to find out that they are really suitable for cement mixing. In Indonesia there are local and waste materials that can be either directly used in cement mixing such as slag, fly ash or processed in order to be used in cement mixing like spent catalyst. The purpose of the research is to utili se waste material, spent catalyst as a mineral admixture in cement mixing and to improve its perfomance, since the catalyst has a Pozzolan characteristic. Residium Catalityc Cracking (RCC) or spent catalyst is a waste material from oil refinery in Balongan , Indramayu.,West Java. Another material used in cement mixing is slag, as a local material or by product from steel manufacture PT Krakatau Steel in Cilegon,Province of Banten. Experiments were done by adding 10% spent catalyst and 10% filler slag to the standard cement mixing, after 28 days the result has not complied to the specification for road pavement, it had compressive strength less than 30 Mpa. (Section 5.1. General Specification for Road and Bridge,2005) The density after curing 28 days, cement mixing used 10% of spent catalyst and 10% of filler slag , had density more than 2,200 kg/dm3 ( the specification between 2,200 kg/dm3 to 2,500 kg/dm3) The addition of 20% spent catalyst and 20% of filler slag, has compressive strength increased more than 30 Mpa after curing 28 days. However, by adding 1,5% superplastizier to the mixed the compressive strength decreased less than 30 MPa. Research is continued by extending curing period up to 56 days, compressive strength of all mixes increased sharply between 40 MPa to 50 MPa. It was concluded that filler slag can be used as an additive in cement mixing, since it has a compressive sterength higher than the standard cement mixing. Keywords: Spent catalyst, filler slag, Cement mixing, compressive strength, density
PENELITIAN PENGGUNAAN BERBAGAI BAHAN STABILISASI TANAH UNTUK PERKERASAN JALAN Leksminingsih Leksminingsih
Jurnal Jalan-Jembatan Vol 23 No 2 (2006)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

Indonesia has various of soils properties, therefore not all soils in Indonesia has fullfill soil’s standard of bearing capacity in order to be suitable for road base of pavement. To fullfill specification of bearing capacity for road base of pavement needed to use soil stabilisation for soil that can use. There are variety of soil stabilisations type within different area in Indonesia i.e RRP, ESC, Phospogypsum, lime, cement,etc The characteristics of soil stabilisation perfomance was tested by laboratory, there are three types of soil stabilisation characteristics that use in three types of soils, are : Ronald Road Packer (RRP) 2-3-5 Special, Osaka Expansive Soil Compound (ESC) and Phospogypsum. The RRP and Phospogypsum as an organic soil stabilisation which function as a catalyst, improving CBR and density not too high, it reveals that the type of soil stailisation from pozzoland is proved CBR and density increase quicker and higher than the type from anorganic, therefore soil stabilisation materials from pozzoland is better to meet standard for road base of pavement.
Kecepatan Aus Cat Marka Jalan Akibat Lalu-Lintas dan Lingkungan Jalan di Kota Bandung Nanny Kusminingrum; Leksminingsih Leksminingsih
Jurnal Jalan-Jembatan Vol 22 No 1 (2005)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

The use of road marking paint for safety of road users currently increased rapidly and with the use of high quality of road marking paints led to the reduce of traffic accidents. Based on field observation showed that preliminary ageing of road marking paints occurred. Research results of road marking paints of several road links in Bandung conducted at the end of 2001 with observation over the year of 2002, abration was found for the manual application (by hand brushing) with the abration percentage reached 100% during one year after application, using marking machines (compressor), the wearing reached 80% when the surface was well prepared and the paint was well laid (with compressor), loss of adhesion can be reduced to 50% over one year. Based on on observation, high traffic is the main cause of loss of adhesion compared to environmental factor measured i.e the average temperature on the pavement surface still below the softening point of asphalt
Campuran Laston Untuk Lapis Antara Menggunakan Agregat Gamping Leksminingsih Leksminingsih
Jurnal Jalan-Jembatan Vol 22 No 1 (2005)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

Indonesia has big sources of limestones which have not been used in asphalt mixes, therefore, their use for road pavement construction should be socialized. The goal of the research is to find out the propertes and comparison of limestone aggregates from two different locations namely Wonogiri and Tasikmalaya, West Java. The performance of Asphaltic concrete with AC–binder specification for limestone aggregates from Tasikmalaya was compared with Bina Marga II Specification for limestone aggregates from Wonogiri. The result showed that limestone aggregatesex Tasikmalaya have the optimum asphalt content of 6.55%, Marshall stability 52% higher, dynamic stability increased to 23% and stiffness modulus at the temperature of 24% higher than standard aggregates ex Sumedang. Limestone aggregates ex Wonogiri have the optimumasphalt content of 5%, Marshall stability 15% higher, dynamic stability increased to 8,7% and stiffness modulus at the temperature of 25°C increased to 43,4% compared to standard aggregates ex Banjaran. The research revealed that both aggregates performed better than standard aggregates. It means that limestone aggregates provide skid resistance to disintegration of road pavement.
PENGGUNAAN AGREGAT SUB STANDAR DAN AGREGAT LOKAL UNTUK CAMPURAN BERASPAL Leksminingsih Leksminingsih
Jurnal Jalan-Jembatan Vol 22 No 4 (2005)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

The study using sub standard aggregate and local agregate for asphalt mixed, it covers mixed design asphalt using five aggregates, there are : standard aggregate, sub standard aggregate that not fulfill the specification, marble aggregate, slag aggregate and limestone aggregate. The result of the mixed asphalt there are, limestone aggregate had a Marshall stability more higher than a standard mixed, is 1820 kg, when slag aggregate nave dynamic stability more higher than standard, is 2100 passing/minute, and permanent deformation also lower than a standard. The test of modulusresulient between slag and standard aggreate are similar, have a same number, but limestoe aggregate have a lower modulus on 25oC, is 41% lower than a standard mixed. The aggregate that have a bad performance is marble aggregate, that have a low Marshall stability is 16,7%, deformation permanent increase 18% and dynamic stability is lowe 52% than standard mixed, when the sub standard aggregate have a lower retain Marshall stability < 75% to original stability. To prove this result, it should be make an application on field, to know the similar performance on laboratory.
Co-Authors Nanny Kusminingrum