Advanced Materials Research Vol. 663

Abstract: For old Portland Cement Concrete pavement paved with asphalt concrete surface, the shearing property at the interface is directly related to the service life of pavement. By using the improved shear-strength test machine in laboratory, shear experiments for composite pavement were carried out in cases of different gradations, interface treatments, types of bonding oil and bonding layer thicknesses. The interlaminar anti-shearing strength was also used to determine an optimal interfacial treatment for composite pavement. Experimental results showed that, gradation type of asphalt mixture was less influential to anti-shearing strength of interface; SBS modified bitumen had more excellent anti-shearing performance in several kinds of bonding oil; rougher and exposed-aggregate interface could significantly improve the shear strength of interlayer on composite pavement; the optimal dosages of bonding oil should be determined by contrast test before construction.

Abstract: This paper propose a new proportion of lining fiber concrete, which can overcome the drawbacks of traditional concrete such as fragile and cracks. Result showed that the concrete strength rise with cement and slag powder increasing. And drop with the increased of fly ash. Double mixing fly ash and slag powder can increase strength more obviously.

Abstract: The compressive strength of bricks used in masonry structures is difficult to deterministically evaluate because of its uncertain nature. It is realistic to model the strength in a probability manner. Compressive tests for bricks were conducted, and then a probability model of the strength was proposed through the Bayesian inference and based on the test results. The model appropriately represented the uncertainty inherent in the brick strength, and can be used to draw characteristic strength values for structural design or assessment.

Abstract: In the current large-scale construction of village planning process, village construction provides better productive, living, ecological conditions for rural areas. However, whether we can balance economic development and sustainable development of environment means whether the benefit of village development can be permanent. This paper clarified how to protect the environment during the process of strengthening village economics and to balance village construction and environment protection so as to achieve the goal of sustainable development. Taking the Beiwu Village planning of Shihe Town Shanhaiguan District Qinhuangdao City as an example, this paper explored the possibility and underlying dynamism of village construction and the sustainable development of environment. Combined with the characters of the natural and economic development of villages and adjusting measures to local conditions, this project optimized the combination of construction and environment as well as rural industries and village landscape, making Beiwu Village into “a paradise for tourists, the homes of farmers, the garden of Shanhaiguan District, the ecological garden of Qinhuangdao city”, which provided a reference for the village construction and the sustainable development of environment.

Abstract: Urbanization is a necessary trend of human development. Urban landscape design, as an important means for improving people's living environment, plays a significant role in social economy, ethics and cultural heritage. Rural landscape can not only provide wider and more flexible space configuration, but also offer diverse perspectives for regional cultural heritage. The study of ecological green landscape in urbanization is beneficial to people's landscape aesthetic, the improvement of the sustainable development of landscape design in urban beautification as well as creation of harmonious and favorable modern city environment. Through discussing the artistic aesthetic of rural landscape from the perspectives of ecology, ethics and culture, this paper manages to cultivate the values and functions of rural landscape's urbanization and to provide feasible transformation plans for the environment during the process of urbanization. Creating rural environment in cities can meet people's demand of being closer to the nature and at the same time can strike out the geographical features, cultural heritage and moral ethics environment as well as bring the returning of humanity, establishment of new social order and the creation of harmonious ecological environment and ideal homes.

Abstract: The dewatering effects of FeCl₃, AlCl₃ and PAM as flocculants for substrate sludge in Poyang Lake of SCAU were tested. The indexes, such as the filtrating volume, the moisture content, etc, were compared in order to achieve the best composite flocculant. The results showed that, when FeCl₃ was used with PAM in the ratio of 4:1, the highest filtrate volume 75mL was obtained. At the same time, when the dosing quantity is 3%, we obtained the best dewatering performances, such as the fastest velocity of filtrate, the highest degree of clarity with 88%, which were better than other flocculants.

Abstract: The objective of this experiment was to investigate the influence of coating solid on surface properties and ink penetration and to characterize the penetration depth through quantitative analysis by laser scanning confocal microscope (LSCM). Fluorescent ink was used to observe and characterize ink penetration and distribution by LSCM. The results implied that the surface properties of coated paper could be adjusted and improved by increasing the coating solid. With the increasing of coating solid, ink penetration depth declined and ink penetration uniformity increased. It could be concluded that the coated paper with high coating solid compared with low coating solid resulted in lower ink usage and better printability on the condition of same print density.

Abstract: What happens in the paper surface about ink absorption is of great important for appearance of final printing. The aim of this experiment was to investigate the influence of printing pressure and printing speed on ink layer thickness transferred onto coated paper through quantitative analysis by laser scanning confocal microscope (LSCM). Meanwhile, the influence of printing pressure and printing speed on print density and print gloss were obtained. The results implied that higher printing pressure resulted in higher ink layer thickness, print density and print gloss when printing pressure is less than 700N, but higher printing speed resulted in lower ink layer thickness, print density and print gloss when printing pressure is constant. It could be concluded that the coated paper with high printing speed compared with low printing speed resulted in lower ink absorption, lower print density, lower print gloss and worse printability on the condition of same printing pressure.

Abstract: In order to look for a low-energy–consumption and high-efficiency drying method, the drying characteristics of agar under infrared ray were studied. The results show that temperature has more obvious influence than granularity on the drying rate of agar. With the increase of temperature, the drying rate increases. The agar granularity does not have a significant influence on the drying rate. Comparisons of different drying models at different temperatures were made through linear regression analysis program. The results show that the drying procedure of agar under infrared ray can accurately be described by the Page model, and the drying rates and moisture contents at different drying stages can also be easily estimated with it.

Abstract: Multi-walled carbon nanotubes (MWNTs) combining with ferroferric oxide (Fe₃O₄) nanoparticles were used for electrochemical determination of bisphenol A (BPA). Fe₃O₄ nanoparticles with an average size of about 12 nm were synthesized. It was found that the Fe₃O₄-MWNTs nanocomposites-modified electrode could remarkably enhance the oxidation current of BPA. Chronoamperometry studies reveal that the amperometric response is rapid, stable, and offers a linear dependence over a range of BPA concentrations from 0.1 to 4 M. The proposed method can be used for evaluation of BPA in water samples. The electrochemical properties of the Fe₃O₄-MWNT nanocomposites are reasonably envisaged to be promising for providing a nanostructured platform in the development of electrochemical sensors or biosensors.