Advanced Materials Research Vols. 450-451

Abstract: Design a kind of suitable village residence constructs of the economy energy prepare to make wall plank, the wall's plank has heat preservation economy energy and accepts heavy dual function, can satisfy accepting of two-story building heavy, and the hot work according to economy energy residence request, the wall's plank can act for a village use to glue soil brick. Pass sample product engineering the fulfillment carried on an engineering application, proving should be prepared to make wall plank to have good economy energy effect.

Abstract: The computational analysis of a three-dimensional (3D) finite element model of all fracture modes (AFM) specimen on mixed-mode I-II fracture was presented in this paper. The separated energy release rates (SERRs) along the crack front of the AFM-model were calculated by the modified virtual crack closure integral (MVCCI)-method and commercially available software ANSYS. The influence of finite geometry and loading angles on mixed mode I-II fracture was investigated.

Abstract: The Chinese Eastern Railway Culture Town is famous for the construction and development of the Chinese Eastern Railway, but its recession is caused by the historical factors and the transport transformation. As a consequence, for such culture towns, there is a mix of problematic issues such as construction and development chaos, spatial structure uncertainty and destroyed townscape. This paper selects the spatial nodes as the research objects to explore its significance within the scope of conservation planning of historical culture town. Taking the practice of Hengdaohezi Town Conservation Planning into account, the author analyzes the status quo of this town presenting the principles of spatial nodes design and establishing the construction guiding framework of spatial nodes.

Abstract: In this paper, the heat-activated conditions of Neimenggu high aluminum coal gangue were studied, and then, the activated coal gangue as a supplementary cementitious material was used in concrete to investigate the application effect. The result shows that the optimal calcining temperature of high aluminum coal gangue is 800°C, the setting time of concrete was postponed, the slump was reduced and the resistance of concrete to chloride ion penetration was improved for the use of activated coal gangue. The compressive strength of concrete was enhanced when cement was replaced by 20%～30% activated coal gangue powder. Pozzolanic effect of activated coal gangue in the early age (7d) is higher and it can promote the hydration of cement with each other.

Abstract: This paper is to solve the current problem of integration of solar energy with building. After detailed analysis of development prospects and constraints in integration of solar energy with building so as to investigate how to implement this integration process, Conclusion shows the study will work in engineering practice with the guiding purpose of guiding energy efficiency guiding.

Abstract: The experimental study was performed on the relationship between the mechanical and durability properties of high-strength concrete with metakaolin (MK) and slag. The compressive strength, chloride penetrability and pore structure of the OPC and the concrete with MK and slag were measured. It is found that MK can significantly increase the compressive strength, decrease the chloride ions migration coefficient and improve the pore structure of the steam cured high-strength concrete. The chloride resistance is improved obviously by 5% MK and further increase of the MK dosage performs a little change of the chloride migration coefficient. Better improvement effect on the mechanical and durability properties is obtained with the incorporation of 10% MK and 10% slag. Linear relationship is found between the coarse pore porosity and the compressive strength, while the chloride migration coefficient correlates well with the capillary pore volume.

Abstract: Considering the influence of atmosphere action, field test of swelling force on expansive soil is carried out in Nanning Guangxi. The test sustains a whole rain season. The testing results show that swelling force is closely linked to the process of rainfall. The phenomenon, that long drought turns the rain, induces a sudden change of swelling force. But the persistence of rainfall brings different influence on vertical and horizontal swelling force. The results of field test can provide reference to optimize the engineering design.

Abstract: Paraffin and modified inorganic porous materials composites as phase change energy storage materials were prepared by absorbing paraffin in porous network of inorganic materials. In composite materials, paraffin was used as phase change material (PCM) for thermal energy storage, and γ-Al2O3 acted as supporting material, ethanol was solvent. A series of characterization were conducted to analyse and test the performance of the composite materials, and differential scanning calorimeter (DSC) results showed that the PCM-3 composite has the melting latent heat of 115.9 kJ/kg with melting temperature of 63.0°C. Due to the capillary and surface tension forces between paraffin and γ-Al2O3, the leakage of melted paraffin from the composites can be prevented. Several kinds of paraffin mixtures were also studied by adsorbing into the supporting materials, so that the composite energy storage materials with different phase change temperature can be used in the building wall to storage thermal of different regions. In a word, the paraffin/γ-Al2O3 composites have a good thermal stability and can be used repeatedly.

Abstract: Building shape coefficient is an important factor in building energy saving design. In order to analyze the influence of shape coefficient to the energy consumption, a typical residential building is simulated by BECS software to analyze the changing regular patterns of the energy consumption for heating and air conditioning while the building shape coefficient is made different. The relationship between building height and shape coefficient, and the impact of the building plane layout on the energy consumption are also analyzed. The results show that the reduction of shape coefficient is benefit to enhance the effect of energy saving.

Abstract: This paper starts from research in characteristics of the direct-gain passive solar house and presents the practical significance for the application of the house in small and midsize public building. The concrete methods are illustrated from location selection, external form, internal room arrangement, ventilation and maintenance structure and so on, which clarify the application way of the direct-gain passive solar house in the building. The purpose of this research is to reduce the energy consumption of the building itself and achieve building energy conservation.