This research used waste ceramic powder (CP) to replace aggregate, fly ash (FA) as filler, and combined them with sulfur prepare composite cementitious materials. The variations of the mechanical properties aggregate proportions (aggregate mass/total mass) 65%, 70%, 75%, FA contents (FA mass/aggregate filler 0%, 10%, 20%, 30%, 40%, 50% were studied. correlation evaluation model content, CP was established using gray theory, comprehensive property foundation entropy method. Finally, optimum...

There are various forms of damage caused by the insufficient shear stress bonding coat, if not handled properly, it will lead to serious early pavement structure. In order improve resistance traditional a new method for steel deck is proposed. According different particle size and content crushed stone, 9 kinds mix proportion were designed. The failure form specimen with analyzed. Based on Popovics constitutive model piecewise simplified model, Shear stress-Shear slip (τ-δ) curve described....

A theoretical calculation method for RC bridge column hysteretic model in saline soil environment was proposed. The effects of axial compression ratio and corrosion rate were considered the test. Based on failure process specimen, a trilinear skeleton curve proposed theoretically calculated. Through regression analysis test results, unloading stiffness specimen whole loading is obtained, determined. Compared with it found that degree agreement results high.

Abstract There have been reports that strength of hydratable alumina (HA)‐bonded castables without silica fume drops significantly at 600°C and decreases substantially again 1000°C. But the variation HA‐bonded during intermediate temperature range has not investigated elaborated from perspective phase evolution microstructural change in castables. In this work, relationship between characteristics was investigated. The microstructure 110°C 1250°C were by X‐ray diffraction (XRD), scanning...

Pumice concrete is a lightweight porous building material. Under the continuous low temperature in permafrost regions, interstitial water of frozen, which can improve its mechanical properties. In this research, freezing law pumice obtained by nuclear magnetic resonance, frozen-heave stress and compressive strength under low-temperature environment are tested, relationship among three studied. A model for considering frost-heave also established using parallel bar theory. Finally,...

Abstract Steel slag is an eco-friendly low-carbon building material that has been widely used for pavement construction in recent years. In this study, the steel aggregate (SSA) to replace a part of basalt porous asphalt mixture improve its microwave absorption ability. Microwave heating promotes self-healing capability steel-slag mixture. We designed and conducted 16 groups fatigue-healing tests based on orthogonal experimental design analyze influence various factors, including degree...

<p indent="0mm">Based on ERA5 reanalysis data, the present study analyzed thermal energy development mechanism and kinetic conversion characteristics of two extreme rainstorm processes in relation to shallow southwest vortex warm-sector during a "rain-generated vortex" process deep "vortex-generated rain" process. The findings were as follows: (1) During August 11, 2020 (hereinafter referred "8·11" process), intense surface heating high-energy unstable environment observed. mesoscale...

AbstractWith limited physical and virtual resources in cloud computing systems, it is not feasible to successively expand network infrastructure adequately support the rapid growth service. So pervasive boundary communication networks that of allocating bandwidth satisfy a given collection service requests hard reach. In situations where there capacity but plethory requests, current optimal methodology choice which satisfy, thereby resulting congestion low utilization rate.It imperative...

In order to detect the bus overcrowding timely, design a system which is used M2M and signal processing in it. This consists of master node for remote wireless communication two subordinate nodes local communications vehicle, that three are star-connected. The tasks collect information from nodes, then display transfer contains count equipment, warning devices, transmission module. Set up counting numbers people inter bus. devices include units, acquisition unit constituted with Pyroelectric...

The marked brittleness with low tensile strength and strain capacities of ultra high concrete (UHSC) compressive 100 MPa can be overcome by the addition polyvinyl alcohol (PVA) fibers. splitting containing PVA fibers are investigated this paper. were added at volume fractions 0%, 0.17%, 0.25%, 0.34% 0.5%. fiber reinforced (PFRC) reached a maximum 0.5% fraction, being an 8.2% improvement over UHSC. PFRC improved increasing achieving 46.7% improvements fraction. models established to predict...

Cement-based material is brittle and easily damaged by an impact load with a few blows. The purpose of this paper to study the relations between resistance tensile properties cement-based materials reinforced polyvinyl alcohol fiber (PVA-FRCM). A drop-weight test uniaxial tension were performed. studied based on experimental results, including relation blow number stress at first visible cracking (σc) strain ultimate failure (εf). Results showed that for crack disc specimens increases...