Applied Mechanics and Materials Vols. 580-583

Abstract: For researching principle and production line state of steam curing of composite wallboard, the art have been conducted through actual investigation and field test. Based on the influence of steam curing on the strength of high performance concrete, durability and volume stability, put forward suggestions of steam curing system; Several problems have been raised for steam curing in the actual production, then some correlative improve measurements are given. Provide the reference for the production and development of the residential part in our country.

Abstract: In the building construction project occupies an important position in the concrete , cracks appeared in the concrete work is more common , the cause of cracks in the concrete temperature control and crack prevention measures such as on-site concrete temperature were analyzed .

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The following article deals with the problem of icicles formation on the roofs and the elimination methods. The attic roofs with pitched roofing are highly susceptible to this negative phenomenon.
In work warming of garret overlappings as a method of prevention of formation ice-dams on roofs of buildings in the operation, being characterized is in detail considered by the lowest temperatures of external air.

Abstract: The construction of high-rise building has a lot of features such as large capital investments, narrow operation face and long construction period. This puts forward higher requirements for technology. Characteristics of high-rise building construction, the construction quality controlling and construction safety managements were analyzed in this paper.

Abstract: Utilization of waste concrete has a great significance for environmental protection; concrete filled steel tube is a way of utilization of waste concrete. At the same time, the recycled concrete on the center tube has a "hoop" function, can compensate for the deviation of mechanical properties of recycled aggregate concrete. This paper introduces the characteristics of steel recycled concrete, and introduces the research status of domestic experts and scholars on it, based on the above; the future application of the recycled concrete in steel pipe is presented.

Abstract: Combined with practical engineering，this paper analyzes the mechanism of mass concrete temperature and shrinkage cracks, from raw material selection, structure design, construction, monitoring and management five aspects,the author respectively gives the countermeasures on temperature and shrinkage crack of mass concrete, reference for engineers.

Abstract: Soft soil’s properties including low bearing capacity and large deformation leads to the necessity of reinforcement of foundation when it is made of soft soil. This article illustrates the features and applications of different methods, through the comparison of them.

Abstract: This paper presents an analysis regarding the bending resistance of a slender plate girder having a longitudinal stiffener in the compression zone of the web.The influence of the longitudinal stiffener rigidity on the bending resistance of a slender girder of Class 4 section is analyzed, starting from the hypothesis that the transversal stiffeners are infinitely rigid.

Abstract: With the rapid development of economy and urbanization, more and more construction waste is produced. The construction waste consumes lots of space and pollutes the environment. Therefore,how to deal with it well is attracted more and more attention and research. The legal system and the treatment processes for construction waste resource utilization between china and the west are compared. Furthermore, considering the fact that a few deficiencies appear in construction waste resource utilization in china, some pertinent suggestions are put forward.

Abstract: In order to determine the proper irrigation amount of summer tomatoes,taking drip irrigation in green house,5 irrigation volume including 990 m³/hm²、1485 m³/hm²、1980 m³/hm²(CK)、2475 m³/hm²、2970 m³/hm² were set,and the effects of different irrigation amount on the yield and quality of tomato in greenhouse were studied. The results showed that with the increase of irrigation amount,the soluble solid content,titratable acid content,Vc content and irrigation water use efficiency of tomato decreased. In treatment T1, T4, T5 ,yield decreased by 26.3%, 6.5%, 15.8%. In treatment T2 , the yield decreased by 1.9%,while the irrigation water use efficiency increased by 20.8%,and the soluble solids content,titratable acid content and Vc content increased.It is concluded that the optimum irrigation amount is 1485 m³/hm².