Stripping resistance evaluation of asphalt mixtures containing ceramic wastes

With the rapid increase in human population and the depletion of existing resources, the number of research and application related to the production and use of recycled materials increase day by day. The reuse of wastes contributes to the national economy by protecting the natural life and the environment. The road paving industry uses a high amount of natural and finite resources such as bitumen and aggregates for construction and conservation of road infrastructures. This study aims to investigate the effect of different percentage of granite ceramic waste (10%, 20%, 30%, 40%, and 50% by weight of aggregates) as virgin aggregates in the stripping resistance of hot mix asphalt. After conducting the associated tests based on traditional aggregate, stripping resistance of asphalt mixtures containing different percentages of granite ceramic waste have been evaluated by ASTM D 1664 Nicholson Stripping Test. The results of experimental study indicated that the utilization of 20% granite ceramic waste in asphalt pavement can replace the traditional limestone in some amount with respect to Nicholson Stripping Test.İnsan nüfusunun hızla artması ve mevcut kaynakların tükenmesiyle birlikte, geri dönüştürülmüş malzemelerin üretimi ve kullanımı ile ilgili araştırma ve uygulama sayısı gün geçtikçe artmaktadır. Atıkların yeniden kullanılması doğal hayatı ve çevreyi koruyarak ülke ekonomisine de katkıda bulunmaktadır. Asfalt kaplama endüstrisi, yol altyapılarının inşası ve korunması için bitüm ve agrega gibi yüksek miktarda doğal ve sınırlı kaynakları sürekli kullanmaktadır. Bu çalışmada, farklı yüzdelerdeki granit seramik atık kullanımının (ağırlıkça % 10,% 20,% 30,% 40 ve % 50 agrega) asfaltın soyulma direnci üzerindeki etkilerinin araştırılması amaçlanmaktadır. Geleneksel agrega testleri yapıldıktan sonra, farklı oranlarda granit seramik atığı ile hazırlanan asfalt karışımların soyulma mukavemetleri ASTM D 1664 standardında belirtildiği üzere Nicholson Soyulma testi ile değerlendirilmiştir. Deneysel çalışma sonuçlarına göre, %20 oranında granit seramik atığının geleneksel kireç taşının yerini alabileceği Nicholson Soyulma testi ile gözlemlenmiştir

DETERMINATION OF MIXING AND COMPACTION TEMPERATURES REGARDING TO BITUMENS INVOLVING PROCESS OIL

In recent years, researchers and engineers investigate the effective and environmentally friendly additives for bitumen modification, thereby improving the performance characteristics of bitumen. Many additives are usually used in bituminous mixtures to reduce energy requirement by decreasing mixing and compaction temperatures of bitumen. Most bitumen shows non-Newtonian behavior at application temperatures ranges. Workability of bitumen samples depends on the proper selection of mixing and compacting temperatures. This paper is aimed to presents a laboratory evaluation of bitumen samples containing different contents of process oil. In the light of the study, base bitumen samples have been prepared with three different percentages (1%, 2% and 3%) of process oil. The prepared bitumen samples containing process oil have been subjected to Brookfield viscosity test. Mixing and compaction temperatures of bitumen samples have been determined by Brookfield viscosity test

Preparation and characterization of Schiff base Cu(II) complex and its applications on textile materials

AutoTech;Eventora;Rieter;Saco;Showroom1017th World Textile Conference: Shaping the Future of Textiles, AUTEX 2017 -- 29 May 2017 through 31 May 2017 -- -- 131781Schiff base ligands are regarded as an important class of organic compounds on account of the fact that their complexation ability with transition metal ions. A new monomeric Schiff base Cu(II) complex, [Cu(HL)2], 1 [H2L = 2-((E)-(2-hydroxypropylimino)methyl)-4-nitrophenol] has been synthesized and characterized by elemental analysis, UV and IR spectroscopy, single crystal X-ray diffraction and photoluminescence study. While the Schiff base ligand and its Cu(II) complex are excited at ?ex = 349 nm in UV region, the Schiff base ligand shows a blue emission band at ?max = 480 nm whereas its Cu(II) complex shows a strong green emission band at ?max = 520 nm in the solid state at room temperature. The luminescent properties showed that the Schiff base ligand and its Cu(II) complex can be used as novel potential candidates for applications in textile such as UV-protection, antimicrobial, laundry and functional bleaching treatments. © Published under licence by IOP Publishing Ltd

Investigation of rheological effects of waxes on different bitumen sources

Wax in bitumen has been referred to as petroleum wax and is obtained from refining of paraffinic crude oils. The effects of wax on bitumen properties depend on the following factors: the source, chemical composition and rheology of the bitumen as well as the content, type, composition and crystallisation of the wax. There is a lack of literature reviews related to the effect of waxes on the rheology and properties of bitumen. The scope of this study is to evaluate the rheological properties of waxy bitumens obtained from different sources. Following the determination of wax contents by differential scanning calorimetry (DSC) and EN 12606-1, waxy bitumen properties were evaluated using conventional methods, rotational viscosity, dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests. The intermediate and high-temperature performances levels of bitumen were also determined according to the Superpave system by a DSR test performed on aged and unaged samples. Rutting performance of bitumens has been evaluated using zero shear viscosity (ZSV) and multiple stress creep recovery (MSCR) tests. © 2016 Informa UK Limited, trading as Taylor & Francis Group

Investigation of rheological effects of waxes on different bitumen sources

Wax in bitumen has been referred to as petroleum wax and is obtained from refining of paraffinic crude oils. The effects of wax on bitumen properties depend on the following factors: the source, chemical composition and rheology of the bitumen as well as the content, type, composition and crystallisation of the wax. There is a lack of literature reviews related to the effect of waxes on the rheology and properties of bitumen. The scope of this study is to evaluate the rheological properties of waxy bitumens obtained from different sources. Following the determination of wax contents by differential scanning calorimetry (DSC) and EN 12606-1, waxy bitumen properties were evaluated using conventional methods, rotational viscosity, dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests. The intermediate and high-temperature performances levels of bitumen were also determined according to the Superpave system by a DSR test performed on aged and unaged samples. Rutting performance of bitumens has been evaluated using zero shear viscosity (ZSV) and multiple stress creep recovery (MSCR) tests

Effect of polymers on rheological properties of waxy bitumens

WOS: 000444324900011The definition of bitumen wax has been formulated to facilitate the distinction between harmful wax and less harmful or non-harmful. Since exact behaviour of waxes within bitumens is not completely determined and the absence of cooperative study related to modification of bitumens involving different amounts of waxes, the values found in the study are thought to be useful in determining which content of wax and type of polymer would be better for the needs of petroleum refineries in different countries. The scope of this study is to minimize the negative effects of waxes within bitumens obtained from different sources. For this purpose, modified bitumen samples were prepared by using different types of polymers such as elastomers, plastomers and polyethylene groups. Following the determination of the contents of wax by Differential Scanning Calorimetry and TS EN 12606-1, rheological properties of waxy bitumens and polymer modified bitumens (PMB) were evaluated using dynamic shear rheometer tests. The intermediate temperature performance levels of PMB were also determined by fatigue parameters. Besides, rutting performance of PMB was evaluated using Zero Shear Viscosity and Multiple Stress Creep Recovery tests.ABZ-1 Group Company, Saint Petersburg, RUSSIAThe authors are thankful to the ABZ-1 Group Company, Saint Petersburg, RUSSIA for their support for performing laboratory tests