Advanced Materials Research Vol. 511

Abstract: A lot of energy resources such as coal, electricity and oils, are consumed during the steel production, and simultaneously a variety of waste heat and energy is produced. If most of the waste heat and energy can be recovered by the self-supply power plant and other generating devices, then the electricity consumed by the factory can be supplied by itself, which can be called the “autarky mode of electricity”. The autarky mode of electricity can improve the recovery of the waste heat and energy, and thus reduce the energy consumption of an iron & steel factory. Based on the BF-BOF steelmaking routes, the energy-flow models for the electricity generating with waste heat and energy are constructed. The autarky modes of electricity of the factories with different production scales are put forward, and the contribution of the mode to energy saving and economic benefits is analyzed.

Abstract: A wood residual fiber foaming cushion material was prepared by using gathered wood fiber as main raw material, starch/PVA adhesive as matrix, adding a certain amount of foaming agent and related additives, hot compression molding to shape up. This paper makes an investigation of single factor on the product’s surface quality and related mechanical property. Results show that with the amount of wood residual fiber increases, the rebound resilience of the product first increases then decreases. The density decreases along with the amount of foaming agent increases. The compression strength and compression modulus of the product increases along with the amount of wood residual fiber increases, it decreases along with the amount of foaming agent increases.

Abstract: The general practice of town renovation is to pull down old houses and build new ones. However, demolition wastes can be used again. With the support of party A, the Mou Estate designed by the author serves as a good example of old village transformed by utilizing old materials. With old materials particularly preferred, mass demolition and total reconstruction can be avoided, and heritage protection and cultural tourism can be achieved at the same time.

Abstract: The survey of ancient buildings is complex work. Chinese wooden buildings, with their complex structure and exquisite decorations, pose a great challenge for survey work. Therefore, it is necessary to introduce unmanned-helicopter photogrammetry and laser scanning technology to facilitate the work. This paper uses three cases to explain the application of these new technologies in China’s architectural heritage protection and analyzes the special features and main operational techniques of the survey work.

Abstract: Directly mixing the PCM to asphalt mixture may adversely affect mixture performance. By the experiment of SEM, the diffusion-absorption circle testing and the DSC, the micro-morphology and the adsorption characteristics to PCM of four carriers and the thermal properties of the composite shape-stabilized phase change materials (CSPCM) were analyzed. The results showed that the activated carbon, the floating bead and the white carbon black have more developed porous structure. The white carbon black has the best effect on the adsorption of PCM. The shape-stabilized PCM prepared by the physical adsorption method has the leakage problem. The CSPCM with the white carbon black carrier has the best heat storage capacity. The white carbon black is the best carrier of PCM for asphalt mixture.

Abstract: Energy consumption and CO2 emissions in buildings is becoming an increasingly important issue. Steel is a major building material with high energy cost. In a reinforced concrete (RC) structure, it accounts for the maximum energy consumption. There is a need to quantify the steel amount in RC for various situations so that reduction or optimization in steel usage can be analyzed. In this paper two different calculations (Calculation-I and Calculation-II) are conducted by using two groups of steel in designing beams, columns and plates for a 20000 m2 five-storeyed frame RC structure. In Calculation-I, or Cal-I in abbreviation, the steel used for beams, columns and plates is HRB335, HRB400 and HPB235 respectively. In Calculation-II, or Cal-II in abbreviation, the steel used for beams, columns and plates is HRB400, HRB500 and CRB550 respectively. The strength of steel used in Cal-II is higher than that in Cal-I. The calculation is carried out by following the standardized concrete structural design code, and the steps involved in calculation are given in certain details as seen necessary. The corresponding energy for producing the steel used in beams, columns and plates is also computed and normalized on per square meter basis. The results show that Cal-II saves 101.76 tons of steel than Cal-I, or 5.09kg/m2, which means a saving of about 64.11 t of standard coal or 1.6×102 t CO2 for the whole structure, or 3.2 kg of standard coal or 7.98kg CO2 for per square meter.

Abstract: Abstract: The corrosion resistance of brass H70-1A cooling water was studied through weight-loss method and electrochemistry measurement in different concentration ratio condition. The results obtained from this study showed that brass inhibitor was necessary to add to circulating cooling water system when concentration ratio was in the range of 3~7.

Abstract: Abstract: The corrosion behaviour of 304SS in cooling water was studied through weight-loss method and electrochemistry measurements in different concentration ratio condition. The results obtained from this study showed that 304SS material was anti-corrosive with inhibitor when concentration ratio of circulating cooling water was 3 ~ 10, especially in CR 10 condition, and the advised CR running range was 3~10.

Abstract: After analyzing the hazards of steel corrosion, the accelerated steel corrosion test conducted by means of steady-damp heat periodic immersion method (artificial accelerated test) is briefly introduced, and the result of the test is analyzed. It is indicated by the test that, the steady-damp heat periodic immersion method could significantly accelerate the corrosion of steel, and there is a linear correlation shown between the corrosion rate and corrosion time of steel.

Abstract: Soft clay can be found in many places around the country of China. Along with the rapid economic development in coastal areas, civil engineers could meet many soft soils. These settlements appear quickly and may continue for a long period of time due to the consolidation behavior. This paper investigates the deformation characteristics of soft clay foundation from trial dates. Support Vector Machine model is proposed to predict settlement of soft clay. The settlement forecasting show Support Vector Machine method has advantages in its simple structure excellent capability in studying and good application prospects. The results of this study proves the elasto-viscoplastic model rationality based on laboratory test and have shown the SVM approach has the potential to be a practical tool for predicting settlement of soft clay foundation.