Experimental study on thermal behavior of a building structure using rubberized exterior-walls

Addition of scrap-tire pieces into cementitious composites improves their thermal insulation performance. Development of such construction materials with lower thermal transmittance reusing these wastes is a challenging issue since it provides a combined solution for today's energy saving and environmental pollution concerns. In favor of this, recent European Union directives have brought quiet strict limits to reduce energy consumption and landfill disposal of solid wastes. A model room whose exteriors are fully made with scrap-tire added concrete is built here to increase its thermal protection. A standard/conventional room at identical dimensions but surrounded by ordinary concretes is also built to examine influence of scrap tire addition on room's thermal protection. Long-term thermal behaviors of these two rooms are investigated and compared under real atmospheric environments. Their indoor temperatures reveal that addition of scrap tire pieces lowers both indoor temperature variations and the effect of outdoor conditions. As an example, mean values of yearly thermal time lag are found to be 3.28 and 2.96 h, respectively for the rooms built with and without using scrap tire pieces, corresponding to nearly 11% improvement in thermal protection. Results in overall verify that scrap tire addition improves thermal protection of the room and it is a cost effective solution for people with low income and/or individuals living in rural areas.     

Variation in surface roughness,wettability and some plywood properties after preservative treatment with boron compounds

Wood can be protected from attack by pests with preservative treatment of the many different preservatives available for wood; borates are generally preferred for indoor uses and can be used to treat solid wood and engineered wood composites. Although treated panels make up a large part of the plywood market, treatment with some wood preservatives has been known to interfere with the bond integrity of glued wood specimens. In this study, the possible effects of borax and boric acid treatment on adhesive wettability and surface roughness of veneers and bond strength and hygroscopicity of plywood panels were tested. No clear changes in surface roughness after borax and boric acid treatment were observed. Poor wettability on the surfaces of alder and beech veneers with UF resin after borate treatments was obtained. Bond strength values of plywood panels decreased and equilibrium moisture content (EMC) of plywood panels increased after borate treatment.     

Aroma components of cv. Muscat of Bornova wines and influence of skin contact treatment

Aroma components of white wine made from cv. Muscat of Bornova, a natives grape variety of Vitis vinifera grown in Turkey, and the effect of skin contact treatment (15 °C, 6 and 12 h) on the aromatic profile of this wine were investigated. Aroma components were extracted with dichloromethane and then analysed by gas chromatography(GC)–flame ionisation detection and GC–mass spectrometry. A total of 72 components were identified and quantified. Skin contact treatment increased the amount of total aroma components. Wine produced with 6 h skin contact was the most preferred. From the 72 compounds identified, β-damascenone, ethyl hexanoate, ethyl butanoate, isoamyl acetate, 2-phenyl ethyl acetate, linalool, geraniol, and 2-phenyl ethanol were impact odourants of Muscat of Bornova wine on the basis of odour activity values (OAVs).