Advanced Materials Research Vol. 1052

Abstract: EACCP is a new-type cement concrete pavement with better skid-resistance and less traffic noise. In this paper, skid-resistance and noise-reducing performance of EACCP are tested and analyzed by laboratory and outdoor tests. The results indicate that the relationship between BPN and EAD is followed the parabola variation laws. With the increase of EAD, TD decreases. And skid-resistance value exists the extremum. If BPN is targeted as skid-resistance optimization goal for pavement surface features, the optimized EAD is existed and approximately to 40~60. The relationship between BPN and TD is also followed the parabola variation laws which also suggests the existence of the optimized TD scope approximately to 0.8~1.0mm.The relationship between TD and EAD can be simulated by index variation laws. With the increase of EAD, TD decreases, which proves the evident noise-reducing performance of EACCP. And the reduction amplitude of noise increases with vehicular acceleration.

Abstract: As for the case of tensile plastic deformation of glass fiber reinforced aluminum laminates (GLARE), the finite element analysis model of the tensile strength of GLARE laminates with a hole is established by means of ABAQUS software under tensile load. The modeling is found to be in good agreement between the simulation results and the experiment data in the failure strength. On the basis of the finite element model, the tensile strength of GLARE laminates containing a hole in other ply modes is simulated, and the influences of the hole size and ply angle on the tensile strength are given in this paper.

Abstract: This study analyzed the impact caused by the change in the physical properties and fine structure of concrete by setting compressive strength, void ratio and permeability as the index to express the physical properties and geometric structure of concrete and then by analyzing the physical properties according to the mix properties of concrete, and secured the data to estimate the corrosion time of structure rebar by analyzing the chloride diffusion speed according to the change in the chloride diffusion speed and physical properties depending on mix properties.

Abstract: The purpose of this paper is to introduce the progress of phase change (PCM) technology in construction and building materials. The function, classification and application of phase change energy storage materials were reviewed. PCMs can be used in construction and building materials for energy-saving purposes, such as coatings, gypsum board, mortar, concrete etc. The existing problems of phase change energy storage materials, current research topics were put forward. It probable that phase change energy storage materials will find wide application in construction and building materials in the near future.

Abstract: Compound Crumb Rubber Modified Asphalt (CCRMA) is a mixture of waste rubber tire powder, SBS modifier and asphalt in order to modify the characteristics of asphalt. The application of using crumb rubber powder in making CCRMA is important in improvement of working characteristics of asphalt as well as in pollution control and environment protection. CCRMA, crumb rubber particles, SBS modifier and base asphalt have been examined by Scanning Electron Microscope (SEM) to observe the microcosmic appearance and the characteristic distribution of crumb rubber particles and SBS modifier in asphalt. The rotary viscometer test and dynamic shear test of CCRMA were carried out by rotational viscometer and Dynamic Shear Rheology (DSR). The influences of rubber powder content and reaction time to viscosity of CCRMA have been studied. In the stage of current study, complex modulus and phase angle of CCRMA are parameters reflecting viscoelasticity, the relation between them and temperature are researched.

Abstract: The main purpose of the pavement coating is to reduce the haze by absorbing and degrading pm2.5 from automobile exhaust. Based on the investigation and analysis of the source and main composition of haze and pm2.5 and the physical and chemical properties of haze, the paper proposes the method of combining the absorption and catalytic degradation of active Al₂O₃ and nanometer TiO₂ together. Through the experiments, the pavement coating which has the different ratio of active Al₂O₃ and nanometer TiO₂ behaves differently on the effect of absorption and degradation of pm2.5, and the optimum dosage and ratio of active Al₂O₃ and nanometer TiO₂ was found finally. The pavement coating which use the optimum dosage has the more obvious effect under the ultraviolet. And the water resistance and skid resistance performance can also meet the requirements.

Abstract: High Ti-bearing blast furnace (BF) slag is the smelting waste of vanadium titano-magnetite. It has great production but low utilization. The high Ti-bearing BF slag is used in building materials industry, which recycles waste material, saves resources and energy, benefiting environmental protection and achieving sustainable development of resources. Study on the recycling of high Ti-bearing BF slag will be an important subject of our researches in future.

Abstract: Aims to application status of biomass ash, basis on physical property, chemical property, mineral phase, element, application status analysis of biomass ash in cement concrete is studied, the result indicate that the reason that biomass ash which the component is similar to fly ash can not be applicated widespreadly in cement concrete is there is no corresponding application standard, no fixed classification and the chemical action mechanism is not determine.

Abstract: This paper aims at the problem which is lack of practical operability although there are many written instructions in collapse earthquake plan and rescue technology of existing concrete frame structure. Research status of earthquake prevention and disaster reduction of existing concrete frame structure is presented. the existing problems of rescue program and technology is analyzed when earthquake is happened in existing concrete frame structure, it is critical to improve the relevant technology standards and regulations and to implement prevention for to solve the problems, the main content of prevention collapse earthquake is pointed out. The result will give some guidelines to the research of collapse earthquake plan and rescue technology of existing concrete frame structure.

Abstract: Feedlot biomass ash (cattle manure ash-CMA) is a waste which comes from dried cattle manure combustion. In recent years, how to reuse the solid waste is becoming a hot issue. There is a large of CMA biomass ash in china every year, which not only occupies farmland and pollute environment but also impact the development of farming and animal husbandry. Therefore, it is necessary to study to reuse CMA biomass ash in concrete to replace concrete. In this paper, status of research of the CMA application in concrete at home and abroad is analyzed, the problems of the present research which exist in application of CMA biomass ash in concrete and how the particle size of CMA influence the performance of concrete when some cement is replaced by CMA is points out. It is necessary to carry out to study how particle size of CMA biomass ash influence on concrete performance.