Applied Mechanics and Materials Vols. 368-370

Abstract: The basic performance and technical characteristics of the prefabricated light-gauge steel inner partition are introduced in the article. And a detailed analysis of its economic is studied by comparing with other inner partition wall materials. The results show that the prefabricated light-gauge steel inner partition not only has good economic effect, but also has high social value.

Abstract: The research of CS panel integration performance of energy saving, load bearing and decoration, shows that exterior materials reflection and absorption of solar radiation is one of the main factors that affects the thermal insulation and building energy efficiency. In this work the experimental detection data is analyzed both quantitatively and qualitatively in order to realize the influence of different solar radiation absorption properties from the outer decorative materials to the CS panel indoor thermal environment and energy-saving. The principle of energy saving optimization choice of the CS panel exterior decorative materials is proposed.

Abstract: The application situation of the inorganic thermal insulation mortar with vitrified beads as aggregates is displayed through the method of market research in this paper. The problem of high construction cost in the inorganic thermal insulation mortar with vitrified beads as aggregates, raw materials market monopoly, high specific water absorption, poor construction process is discussed. And put forward the corresponding solutions to solve these problems, as the inorganic glass beads can provide a theoretical basis on the substitution.

Abstract: As the sign of social development, the vehicles and traffic flux have been increasing and have greatly influenced the ecological environment at the same time, especially on the cementitious based materials along roads as well as constructions. Heavy metal particle and ion absorption behavior and mechanism in these cement materials were investigated and analyzed by means of ICP, SEM-EDS and XRD. The absorption mechanism was discussed and generalized.

Abstract: In order to solve the strength matching problem of grouted concrete and block in mortarless grouted masonry, the article adopts the ANSYS nonlinear simulation to establish different strength grade models. And the result shows that, when the strength matching relationship between the mortarless block and the concrete reaches f_c/f_b=1~2, the grouted concrete and block compressive strength are brought into full play without material waste. The result is close to f_cu/f_cb = 1.5~3.5 (gross area) from the literature^[1]. It is clear that, when the compressive strength of the two is close, their joint work can exert the best effects. It fits the experimental results and provides reference to the application of mortarless grouted block.

Abstract: The Cement-Asphalt Mastic (CAM) is combined with emulsified asphalt and cement. It can mix at room temperature manufacturing and construction without heating. This study investigated viscosity, slump, setting time and segregation of fresh Cement-Asphalt Mastic (CAM). These properties help control the quality of Cement-Asphalt Concrete (CAC). Viscosity and slump are associated with CAC workability and segregation of mastic is related to that quality of fresh CAC. Analytical results of these property tests establish an applicable range for cement and emulsified asphalt (C/A) in CAM at 1-1.2. The applicable range for F-type Superplasticizer (FSP) and emulsified asphalt (FSP/A) is 0.03-0.05.

Abstract: Closed form solutions are derived in this work by including free end slip, relating free end and loaded end slips to bond resistance, as well as relating slip or strain at any position to free end slip. To identify the bond-slip relationship, indirect analytical identification from load-slip response curve is used. Using the identification procedure developed in this paper, very good agreement between the theoretical solutions and experimental results was observed, which validates the theoretical results derived in this work.

Abstract: With the development of various infrastructure construction, the demand of sand is increasing. The supply of natural sand could not meet the requirements of engineering due to the excessive exploitation and using the Manufactured sand which instead of natural sand is one of the effective methods to resolve the shortage of natural sand. Based on the experimental study of mechanism of used sand and natural sand masonry mortar in water retention, density and consistence, this paper analyzed the difference between the masonry mortar mixed manufactured sand and the one mixed by Natural sand. The result of study can provide the reference in engineering practice which use the masonry mortar mixed manufactured sand not but mixed by Natural sand.

Abstract: Ecological composite wall as ecological composite wall structure of the main stress components, the seismic performance is ecological composite wall structure seismic performance evaluation system of the main content. Based on the grey system theory, the grey correlation analysis to the key parameters (the mouth of the cave, frame structure, height to width ratio) change ecological composite wall test results are analyzed, the key parameters on the ecological composite wall the influence law of seismic performance, for choosing wall structure design method to provide basis.

Abstract: The prestressed composite T beam with concrete-filled steel tube is made through welding with half I-beam to connect the concrete-filled circular steel tube. The prestressed reinforcement was equipped on the T-beam. The load-bearing capacity and rigidity of the composite beam was enhanced by using prestressed force. In consideration of applying prestress, the corresponding parts stress and strain from the beginning of applying prestress to the phase of elimination of the pressure is calculated through the process of applying prestress; establish the equation of elastic flexural capacity with different location of neutral axis according to the theoretical analyses. Also use the superposition method to build the equation of the deflection. The computational results show that applying prestress reduces the deformation of the composite structure and the mechanic performance has improved which provide important theoretical basis with practical application in engineering.