Advanced Materials Research Vol. 831

Abstract: The legislation of public housing policy in Taiwan was in the 1949 after the Nationalist Government moved to Taiwan from China. Since 1949, Taiwan faced several difficult situations, for example the oil crisis period and the real estate economy took off. In 2000, government decided to stop this policy, and didn't offer any appropriate social housing policy. However, Taipei is the most densely-populated city in Taiwan. People could not buy their own private house for the high price. Its showed us a great deal of the need of housing rental. With this matter, Taipei City Government began to offer the public housing in 2012. This syudy compares the Taiwan national public housing policy and the Taipei local social housing overall policy planning. The purpose of this study is to examine if the Taipei social housing policy suits the rent market or not. We discussed the advantages and disadvantages of Taipei policy planning, analyzed the need of improvement on Taipei social housing policy.

Abstract: The paper introduces Engineering characteristics of the expressway service area, summarizes the basic situations of the design of service area residential quarters water supply, landscaping, fire, rainwater and drainage system, discusses the pipe materials selection, pipe connection, pipe arrangements and laying and construction precautions in the process of the design of service area residential quarters water supply and drainage engineering, etc; in order to provide a reference for similar engineering.

Abstract: Preparation of the adsorbent with lead removal ability using a sulfur impregnation was studied. Coal, palm shell, waste tire and diatomite, were used as raw materials. Raw material was mixed with K₂S powder and then heated at 800 °C or 900 °C for 30 min in nitrogen to produce a sulfur-impregnated adsorbent. The sulfur-impregnated adsorbents prepared from coal, palm shell, waste tire and diatomite at 800 °C have lead removal property, and the order of lead removal ability is the adsorbent from coal = palm shell > waste tire > diatomite. The sulfur-impregnated adsorbent prepared from coal had a high sulfur content and high specific surface area. The adsorbent showed higher removal ability for lead ions from aqueous solution than zinc and cadmium ions in ternary Pb²⁺-Zn²⁺-Cd²⁺ solution. These results indicate that the sulfur-impregnated adsorbent has high selective adsorption ability for lead ions in aqueous solutions.

Abstract: The mechanical properties of water-permeable concrete after mixing with coated recycled aggregates, silica fume, and PVA fiber were investigated in this study. Recycled aggregate was coated double-layer and then mixed as the coarse aggregate of water-permeable concrete. As a result, the void ratio, water-permeability coefficient and strength decreased, as compared to concrete with mixed crushed aggregates. When both silica fume and PVA fiber was added, the strength of the water-permeable concrete increased (compressive strength : by 4.3%, flexural strength : by 2.1 times). Also, the freeze and thaw resistance of the water-permeable concrete increased by approximately 44.15% compared to the plain concrete with no added reinforcing element.

Abstract: This study explored the decolorization of C.I. Reactive Red 2 (RR2) by the ultraviolet (UV)/TiO₂, UV/TiO₂ + In₂O₃, and UV/TiO₂-In₂O₃ systems. The TiO₂-In₂O₃ was generated by the sol-gel method and TiO₂ + In₂O₃ was created by mixing TiO₂ and In₂O₃ powders. The surface properties of TiO₂, In₂O₃, and TiO₂-In₂O₃ were analyzed by X-ray diffraction, a specific surface area analyzer, UV-vis spectroscopy, and scanning electron microscopy. The specific surface area of TiO₂, In₂O₃, and TiO₂-In₂O₃ was 29.5, 44.6, and 35.7 m²/g, respectively; additionally, the band gap of TiO₂, In₂O₃, and TiO₂-In₂O₃ was 2.95, 2.64, and 2.91 eV; respectively. The decolorization rate constant fit pseudo-first-order kinetics and that of the UV/TiO₂, UV/TiO₂ + In₂O₃, and UV/TiO₂-In₂O₃ systems was 0.0023, 0.0031, and 0.0072 min^-1; respectively.

Abstract: The purpose of this study is to determine whether cementitous powder of waste concrete which is separated from waste concrete can be used as alternative raw material for limestone. Chemical composition of cementitous powder of waste concrete was actually analyzed and the experiment to measure the recovery of hydration of waste cementitous powder model was performed. As a result, hydration was recovered to the level at which it can be used as alternative raw material for limestone, but less than 10 % can be used due to mix of fine aggregate in less than 150μm which cannot be separated from cementitous powder. Therefore, development of technology to efficiently separate cementitous powder of fine aggregate is required to have the alternative material for limestone and effect for reduction of greenhouse gas.

Abstract: Based on the practice of fight against snow and ice covered on the highway in Liaoning Province which lies in the northeast of china, the research results on the impacts of the highway snow-meting agents on the greening vegetation are shown. Then suggestions to reduce the bad impacts are put forward to provide reference for using scientifically snow-melting agents and protecting environment in the paper.

Abstract: Large-scale sensor networks are systems that a large number of high-throughput autonomous sensor nodes are distributed over wide areas. Much attention has paid to provide efficient data management in such systems. Sensor grid provides low cost and high performance computing to physical world data perceived through sensors. This article analyses the real-time sensor grid challenges on large-scale air pollution data management. A sensor grid architecture for pollution data management is proposed. The processing of the service-oriented grid management is described in psuedocode. A simulation experiment investigates the performance of the data management for such a system.

Abstract: Eco-costs are a measure to indicate environmental burden of aproject or aproduct. This paper presents a practical applicationof Eco-costsModel in evaluating different emissions reduction measures on construction equipment.We propose acomparison model withthe input data of emission reduction percentageand Eco-costs of emissions. Then, six emissions reduction measures are chosen to develop detailed processes in using the comparison model.The study provides a guide in evaluating air pollution ofdifferent emissions reduction measures on construction equipment, which shows a theoretical foundation on selecting emissions reduction measures.

Abstract: The fast development of highway construction makes its negative effects on the natural ecological environment more and more prominent, which makes the designer to have to think in earnest about how to deal with the relationship between highway construction and ecological environmental protection and how to put the concept of harmonious relationship between human and nature, subsistence and development, and alteration and respect of nature into highway design. Based on the analysis in ecology and ecosystem of highway, highway ecological esthetics and ecological ethic are explained in the paper. The core of the relationship between highway construction and ecological environment protection is studied from the three aspects of avoidance and compensation, destruction and recovery, and protection and utilization. The concept and characteristics of ecological highway are defined. And ecological highway design principle and requirement are also explored to confirm the key content of ecological environment protection in highway construction, which make the ecological ideas apply to the entire life circle of highway construction including plan, design, construction and operation to achieve highway sustainable development.