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In this study, it was tried to obtain bearing concrete by using the pumice and perlite aggregates in certain proportions. Different cement dosages were used in every mixture poured with portland cement and portland composite cement, the 60% pumice and 40% perlite aggregates of which were kept stable. The silica fume was added as much as 10% of cement amount in mixture. Mixtures from 200 to 500 doses were made and poured with every type of cement. The prepared samples left to water cure and their 7 and 28 days compressive strengths were determined. The test results indicated that the mixtures p ...Более
As the urban population increases and the level of social life advances, the amount of wastewater originating from houses, institutions and industries increases as well. It is necessary for the infrastructure systems in settlements to be sustained under healthy conditions. Since the subsequent repair of infrastructure systems is difficult, appropriate selection of the materials used in these systems is of importance. Concrete pipes are widely used in sewerage systems. In the present study, it was aimed to improve the biological corrosion resistance of concrete pipes via coating with various ma ...Более
Animal fats are one of the biodiesel raw materials. In this study, biodiesel was produced from horse fat by transesterification method and the produced biodiesel was mixed with euro diesel at 5 by volume, and experimental fuels in the form of D-100 and D95B5 were obtained. Fuel properties of test fuels were determined. In addition, using the experimental fuels in a single-cylinder, four-stroke, water-cooled diesel engine, the data obtained by investigating the engine performances, energy analysis, and noise emissions were presented with graphics and interpreted. In the experiment results; D95B ...Более
In internal combustion engines, mineral engine oils which serve as lubricants between parts are not used alone due to technical reasons and various additives are made use of for better lubrication. In these additives, liquid boron serves to reduce friction. To reduce the environmental damage caused by engine lubrication oils, it is necessary to improve the properties of biological oils so that they can be used and compete with mineral oils technically. In the study, the use of liquid boron as an engine lubrication oil additive, together with wild mustard oil methyl ester, was investigated. Two ...Более
In Turkey, the consumption of diesel oil is increasing both in transportation and in agricultural fields. In this study, the opportunities of the use of safflower oil, which grow originally in Turkey as a direct fuel in diesel engines, were researched to provide a new alternative for biofuel industry and to popularize the farming of oil crops.
In this study, the kit design was completed first, and afterwards safflower oil was exposed to the process of neutralization and laundering, and then turned into standard fuel. For engine performance experiments, reference experiences were conducted by ...Более
Mahmut VURAL | Gülnara KARADENIZ | Gülmira ACIGULOVA
Küreselleşen dünyada tüketicilerin ihtiyaç ve beklentileri, yaşam tarzları ve yaşam tercihleri de hızla değişmektedir. Buna bağlı olarak konut sektöründeki tüketicilerin konut tercihlerinde de bu beklentiler görülmektedir. Bu çalışmada, Bişkek’te öğrenim gören üniversite gençlerinin gelecekte sahip olmak istedikleri konut tercihleri incelenmiştir. Bu amaç doğrultusunda; Bişkek’teki üniversiteler arasından rastgele beşi seçilmiş ve öğrencilerden anket aracılığı ile veriler toplanmıştır. Elde edilen veriler nonparametrik Mann-Whitney U, Kruskal-Wallis H testleri kullanılarak analiz edilmiştir. A ...Более
The boron occupies an important place on contributions and its usage is getting widespread. Although the use of boron-added mineral oils serves to reduce friction, environmental risks can not be totally removed. It is necessary to improve the properties of biological oils used for additives so that they can compete with mineral oils technically. In the study, the use of liquid boron as an additive for engine lubrication oil together with vegetable oil was investigated experimentally in two diesel engines. Experiments were first carried out using mineral lubrication oil in the engine, and then ...Более
Mahmut VURAL | Hüseyin ÖĞÜT | Mehmet Rüştü ÇİFTÇİ | Gülnara KARADENIZ
Periyodik bakım, motorlu araçların belli aralıklarla kontrol, ayar ve değiştirme işlemlerinin gerçekleştirilmesi işlemidir ve aracın performansı açısından büyük önem arz etmektedir. Periyodik bakımların zamanında yapılması aracın daha uzun ömürlü olmasını, yakıt tasarrufunu ve daha güvenli bir şekilde çalışmasını sağlamaktadır.
Kırgızistan’da sıfır araç satışından çok, ikinci el pazarının yoğunlukta olması araç parkının ortalama yaşını yükseltmekte, bu durum bakım ve servis hizmetlerini daha önemli hale getirmektedir. Otomobil sahiplerinin araç bakım alışkanlıklarını ölçmeye yönelik herhangi ...Более
Millions of tires are discarded every year. Disposal or recycling-reusing of waste tire rubber has become a big environmental problem in the world. In this study, it was aimed to determine the freezing-thawing, impact resistance, compressive strength and capillary water absorption rate, when the granulated waste rubber parts are used in the non-load-bearing concrete. Granulated crumb rubbers obtained from waste tires were used at two different grain diameters of 1 and 2 mm as the maximum value. A total of 9 different series were prepared, one of them being the control group and the others bein ...Более
This paper introduces an experimental research about the influences of the curing type on accelerated carbonation, capillary water absorption and permeability of a range of different self-compacting lightweight concrete (SCLC) mixtures in comparison with those of chosen conventional vibrated lightweight concrete (LC) and self-compacting concrete (SCC). Seven different concrete compositions are considered: four SCLC, two SCC and one LC mixtures. All of the SCLC mixtures and one of the SCC and one LC mixture with a constant powder dosage of 550 kg/m(3) was designed to be containing 440 kg/m(3) o ...Более
In this study, linseed oil was obtained with the aid of screw presses and linseed oil biodiesel (B100) (linseed oil methyl ester) production was performed by transesterification method. Linseed biodiesel was blended with regular diesel fuel at different ratios as B2 (98% diesel + 2% biodiesel), B5 (95% diesel + 5% biodiesel), B20 (80% diesel + 20% biodiesel), B50 (50% diesel + 50% biodiesel). Fuel properties tests were performed on all fuels. Results revealed that engine performance values of linseed biodiesel and fuel blends were similar with the standard diesel fuel. With regard to maximum t ...Более
In this study, biodiesel was produced from safflower seeds by converting the raw oil obtained through dampening them via the rolling process, roasting at 90 °C and pressing into Safflower Oil Methyl Esther (Safflower Biodiesel) using the trans-esterification method. Experimental fuels were obtained in the forms of D100, B2.5M2.5D95, B5M5D90, B5M2.5D92.5 and B2.5M5D92.5 by mixing the biodiesel fuel obtained from safflower with diesel fuel, adding bio-ethanol at the rates of 2.5% and 5%, and volumetrically in inverse ratio. Tests were conducted to determine the fuel properties of the mixed fuels ...Более