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Pengaruh Penambahan Fly Ash Terhadap Sifat Workability Dan Sifat Fisik - Mekanik Beton Non Pasir Dengan Agregat Alwa Asal Cilacap Trisnoyuwono, Diarto
Rekayasa Sipil Vol 9, No 1 (2015)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

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A massive concrete production impact on improving air pollution from cement plants. In addition, there are areas has limited aggregate resources that meet building requirement. Building materials technology bring solution for such problems, for example fly ash which can improve the performance of concrete, artificial lightweight aggregate (ALWA) from shale combustion and no-fines concrete. The study aims to determine effect of the fly ash in the mixes of no-fines concrete with ALWA aggregate to the degree of workability and physical - mechanical properties. This research was conducted by the addition of the variable portion of fly ash by 10-20% in comparison mixture of cement - aggregate 1: 4; 1: 6; 1: 8, and the measured value of the slump (workability values) and compressive strength. The results indicate the addition of fly ash were able to increases the value of the slump of up to 7 cm and reach 19.71 MPa of compressive strength.Â

BETON NON PASIR DENGAN AGREGAT DARI BATU ALAM (BATU APE) SUNGAI LUA KABUPATEN KEPULAUAN TALAUD SULAWESI UTARA Trisnoyuwono, Diarto; Tjokrodimuljo, Kardiyono; Satyarno, Iman
Civil Engineering Forum Teknik Sipil Vol 19, No 1 (2009): JANUARI 2009
Publisher : Civil Engineering Forum Teknik Sipil

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Timber supply is diminishing in addition to the trend to lower quality but higher cost of wood production manufacturing. However, because the demand of this material continues, an alternative or substitution on the use of timber, such as bamboo laminated, is desirable. Having susceptible character to powder by beetles attack, bamboo must be passed through preservation process before it is applied as laminating materials, but chemical preservative materials used in industrial process ring negative impacts to the environment. One of human and environmental friendly preservatives is the tobacco extract. Nevertheless, the most effective concentration of tobacco extract and its influence to the adhesive materials have not been well recognized. This research objective was to investigate the influence of tobacco extract to the natural and mechanic behaviour of laminated bamboo. Dried tobacco flake was mixed with water in variable concentration of 100, 125, 150 and 175 gram/liter. Bamboo split were given treatment in boiling water with tobacco extract solutions. As benchmarking, bamboo split also preserved with boiling water (without preservatives materials) and 5% concentration of borax. Non preservative bamboo was used as the control. The result of experiment showed that 150 gram/liter tobacco extract concentration of caused 61,33% insect mortality and 1,87% decreased weigh, which is effective to be used as preservative in compare to other three concentrations. Water content and density observation showed that preservation using 150 gram/liter extract tobacco comparing to non preservative boiling preservation, produced smaller value of water content and larger value of density than borax preservative. Preservation using 150 gram/liter tobacco extract produced highest value of compression parallel to grain and modulus of the bamboo elasticity Petung mechanic properties were 277,95 MPa and 170,34 MPa, respectively. Mechanical properties of laminated bamboo that were significantly influenced by preservative variation showed that highest values for compression parallel to grain and modulus of elasticity were 66,09 MPa and 127,12 MPa, respectively and reached by preservation using 100 gram/liter of tobacco extract.

Dampak Kerusakan Dini Perkerasan Jalan terhadap Kerugian Aspek Finansial Simamora, Marsinta; Trisnoyuwono, Diarto; Muda, Anastasia Hendrina
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 24, Nomor 2, DESEMBER 2018
Publisher : Department of Civil Engineering, Diponegoro University

National road management is not optimal and inefficient, the indications can be seen from the number of early damage cases of the road construction found. Indeed, natural damage to road construction is unavoidable but it becomes a problem if the damage occurs not long after the road product is handed over to the road manager or the government. Then the next question can arise whether the phenomenon of early pavement damage will cause harm to both road users and the government.This study aims to show the thinking framework of financial consequences and apply it through a model due to the occurrence of premature damage. Referring to the concept of benefit value that is represented by road conditions over the life of the service, then roads that have been damaged before their construction ends will result in losses due to loss of benefits. Based on this concept, a simulation was conducted using a national road data. Simulation results show that there is an estimated financial loss due to the occurrence of early damage. For early damage with a condition value of loss of 36 then the estimated loss is Rp 458,257,899.41 per kilometer. Estimated average loss per kilometer for each loss of one unit of condition value is Rp 12,72,386.09. The results of this study also show that roads that do not suffer early damage do not cause losses or losses are zero.

Pengaruh Distribusi Agregat Dari Produk Campuran Hrs Base Terhadap Parameter Marshall Tiung, Yustina Fatima; Trisnoyuwono, Diarto; Alokabel, Koilal
JUTEKS : Jurnal Teknik Sipil Vol 9 No 1 (2024): JUTEKS (Jurnal Teknik Sipil)
Publisher : P3M- Politeknik Negeri Kupang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32511/juteks.v9i1.1228

Road service quality can be determined by qualitative assessment (safety and comfort). The quality of the surface layer is one of the parameters. The HRS Base hot mix asphalt surface course, for example, is often a product failure. One of the reasons is the mismatch between the design results and the production of the mixture, for example, the gradation of mixed aggregates whose composition may deviate due to weaknesses in the production process at AMP. The first variation (10% more coarse aggregate) did not meet the specifications because there were several parameters that did not meet the requirements, namely VIM, VFB, MQ, and residual marshall stability, the second and third variations (10% less coarse aggregate and 10% more fine aggregate) the parameter values of VIM, VFB, MQ and residual marshall stability did not meet the specification requirements and only the parameter values of stability and VMA met the specifications. In the fourth variation (10% less coarse aggregate and 10% more fine aggregate), some of them met the specifications but there were two marshall parameter values that did not meet the specifications, namely the MQ value and the residual marshall stability, while in the control variable all the marshall parameter values met the specification requirements

BUDIDAYA SHELL BACKDOOR DI PANTAI BOLOK KUPANG - NUSA TENGGARA TIMUR Nahak, Priska Gardeni; Trisnoyuwono, Diarto
JUTEKS : Jurnal Teknik Sipil Vol 1 No 2 (2016): JUTEKS JURNAL TEKNIK SIPILJUTEKS (Jurnal Teknik Sipil)
Publisher : P3M- Politeknik Negeri Kupang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32511/juteks.v1i2.116

NTT Province as one of the provinces in Indonesia has many islands, with the main livelihood of the people were farming, gardening and seaweed farmers. One of the flagship products of seafood NTT was seaweed. Kupang district is one of the producers of seaweed in the province, but the availability of area for those matter until now not able to meet the maximum target of dry seaweed. Additionally dried seaweed produced has poor quality because it still contains a lot of impurities, thus affecting the selling price, which would certainly have an impact on the income and welfare of the farmers. It is because the technique that applied to both the cultivation technique and drying techniques were still very traditional. One of the technologies offered to overcome those problems was 'Dryer Box Technology'. This technology were expected especially to minimize the amount of seaweed ready for harvest were always broken and lost in the rainy season, due to lack of seaweed dryers facilities. In addition by these technology were also expected to get more cleaner dried seaweed because it is not contaminated with dirt when drying, so as to improve the quality of the dried seaweed. This quality improvement, also will increase the selling price of which would increase the income and welfare of farmers seaweed, as well as increasing the amount of seaweed production in NTT Province. The dryer box technology has a dimension 0.8 m lenght; 0.66 m width; and 1.5 m height. so that for once the drying process, 50 kg of wet grass only requires about 0.53 m² of area, while using traditional drying methods requires 10m² ± s / d 15 m² of area depending on the number of wet grass. Besides shorter drying time is for 50 kg of wet grass, it takes only about ± 0.75 hours. Whereas with traditional systems, drying time takes an average of 3-4 days. This will increase the productivity of dry seaweed, which can increase the production quantity of dried seaweed ready though in NTT Province.

BUDIDAYA SHELL BACKDOOR DI PANTAI BOLOK KUPANG - NUSA TENGGARA TIMUR Nahak, Priska Gardeni; Trisnoyuwono, Diarto
JUTEKS : Jurnal Teknik Sipil Vol 1 No 2 (2016): JUTEKS JURNAL TEKNIK SIPILJUTEKS (Jurnal Teknik Sipil)
Publisher : P3M- Politeknik Negeri Kupang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32511/juteks.v1i2.116

NTT Province as one of the provinces in Indonesia has many islands, with the main livelihood of the people were farming, gardening and seaweed farmers. One of the flagship products of seafood NTT was seaweed. Kupang district is one of the producers of seaweed in the province, but the availability of area for those matter until now not able to meet the maximum target of dry seaweed. Additionally dried seaweed produced has poor quality because it still contains a lot of impurities, thus affecting the selling price, which would certainly have an impact on the income and welfare of the farmers. It is because the technique that applied to both the cultivation technique and drying techniques were still very traditional. One of the technologies offered to overcome those problems was 'Dryer Box Technology'. This technology were expected especially to minimize the amount of seaweed ready for harvest were always broken and lost in the rainy season, due to lack of seaweed dryers facilities. In addition by these technology were also expected to get more cleaner dried seaweed because it is not contaminated with dirt when drying, so as to improve the quality of the dried seaweed. This quality improvement, also will increase the selling price of which would increase the income and welfare of farmers seaweed, as well as increasing the amount of seaweed production in NTT Province. The dryer box technology has a dimension 0.8 m lenght; 0.66 m width; and 1.5 m height. so that for once the drying process, 50 kg of wet grass only requires about 0.53 m² of area, while using traditional drying methods requires 10m² ± s / d 15 m² of area depending on the number of wet grass. Besides shorter drying time is for 50 kg of wet grass, it takes only about ± 0.75 hours. Whereas with traditional systems, drying time takes an average of 3-4 days. This will increase the productivity of dry seaweed, which can increase the production quantity of dried seaweed ready though in NTT Province.

BUDIDAYA SHELL BACKDOOR DI PANTAI BOLOK KUPANG - NUSA TENGGARA TIMUR Nahak, Priska Gardeni; Trisnoyuwono, Diarto
JUTEKS : Jurnal Teknik Sipil Vol 1 No 2 (2016): JUTEKS JURNAL TEKNIK SIPILJUTEKS (Jurnal Teknik Sipil)
Publisher : P3M- Politeknik Negeri Kupang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32511/juteks.v1i2.1337

NTT Province as one of the provinces in Indonesia has many islands, with the main livelihood of the people were farming, gardening and seaweed farmers. One of the flagship products of seafood NTT was seaweed. Kupang district is one of the producers of seaweed in the province, but the availability of area for those matter until now not able to meet the maximum target of dry seaweed. Additionally dried seaweed produced has poor quality because it still contains a lot of impurities, thus affecting the selling price, which would certainly have an impact on the income and welfare of the farmers. It is because the technique that applied to both the cultivation technique and drying techniques were still very traditional. One of the technologies offered to overcome those problems was 'Dryer Box Technology'. This technology were expected especially to minimize the amount of seaweed ready for harvest were always broken and lost in the rainy season, due to lack of seaweed dryers facilities. In addition by these technology were also expected to get more cleaner dried seaweed because it is not contaminated with dirt when drying, so as to improve the quality of the dried seaweed. This quality improvement, also will increase the selling price of which would increase the income and welfare of farmers seaweed, as well as increasing the amount of seaweed production in NTT Province. The dryer box technology has a dimension 0.8 m lenght; 0.66 m width; and 1.5 m height. so that for once the drying process, 50 kg of wet grass only requires about 0.53 m² of area, while using traditional drying methods requires 10m² ± s / d 15 m² of area depending on the number of wet grass. Besides shorter drying time is for 50 kg of wet grass, it takes only about ± 0.75 hours. Whereas with traditional systems, drying time takes an average of 3-4 days. This will increase the productivity of dry seaweed, which can increase the production quantity of dried seaweed ready though in NTT Province.

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