Advanced Materials Research Vols. 608-609

Abstract: This paper presents evidence from the recent study of an effect analysis of a passive solar house in Tibet. A passive solar house in Tibet is first introduced. The passive solar house was divided into two parts by trombe wall, by measuring the temperature of two different parts, the result showed that the temperature in heat preserve room and bath room appeared different changes but had the similar trend with outside temperature. In the test conditions, the daily mean temperature of these two different places ranged from 12.77°C~14.60°C to 11.21°C~13.95°C respectively, which reached our requirement. The results indicated that the solar house can improve the thermal environment for the resident.

Abstract: The use of kaolinitic clay, which chemical compound consists of mainly silica (SiO2) and alumina (Al2O3), mixing with charred seashells, consisting of mainly calcium oxide (CaO), could be improved by polymerization process. The ratio of kaolinitic clay and charred seashells used in the study ranges from 1: 0.6 to 1: 1.6 by weight. After curing for 28 days, the improved material has the ultimate compressive strength in the range of 3.7 to 7.9 MPa. In additions, the improved material has good heat resistance property. The utilization of natural waste materials together with polymerization technique could improve the material properties to meet the demand of construction industry in the future.

Abstract: Abscission layer grouting is a new filling technology of surface subsidence control, it can protect environment because of using mine waste as filling materials, The paper establishes the overlying strata structural mechanics model of abscission layer grouting, it analyzes the main influence factors of overlying strata abscission layer development and the relationship between overlying strata structure and abscission layer, it also establishes and studies the grouting range structural mechanics model of abscission layer grouting.

Abstract: From the methodology for evaluating the value of green building engineering (GBE), this paper presents the connotation of GBE value system. GBE value evaluation is a comprehensive project appraisal and evaluation of the value of the principles and values of properties, methods and value property are discussed. Based on the main body of generalization and conflict of the interest, the construction of GBE systems’ general objectives with engineering management, engineering technology, and engineering economy, engineering social and ecological goals are analyzed, and from time, space and energy dimension GBE system internal correlations properties are studied. Taking basic goals of GBE engineering as example, to evaluate the value system is especially important to systemic analysis of the BEE engineering practice.

Abstract: In order to fully mechanized caving face bypass collapse column on safety and high efficiency, this paper do similarity simulation experiment, and obtained experimental result that main type of seepage flow includes finger seepage and surface seepage, the grout enter into around pore and occupy it’s space in grouting pressure. Moisture content of mud and sand medium is lower, grouting process can be regarded as single-phase permeability, analysis on the relation between grouting diffusion radius and other parameters. may know that grouting diffusion radius is increased with the increase of permeability coefficient and grouting pressure and grouting time, and is decreased with the increase of Porosity and grout viscosity.