In the present work it is shown that the curing temperature which gives the most effective results depends on the chemical composition of the cement and there is no universal accelerated curing temperature which can be recommended for all cements. It is also shown that there is no interaction ...
difference in later stage.Feedback information from fieldwork indicates that good effect of temperature control and crack prevention has been achieved.At the same time,the method of external insulation board also makes the quality of surface concrete obvi- ously improved,so it deserves to be ...
The latter two methods are only appropriate for estimating the temperature rise in mass concrete members. Also, the above three methods all have defects that they cannot predict concrete temperature continuously. The manual work will be tremendous if temperature predictions in shorter time intervals ...
concrete under invariable input.In the experiment of temperature adjustment,the process control by changing power is adopted which makes the speed of regulating increased greatly,and the influence of time for power changing on the speediness and stability of temperature adjustment is obtained by ...
This research work has investigate the various strengths at elevated temperature of high strength fiber reinforced concrete (HSFRC). Various strengths considered for investigation are compressive strength, flexural strength. Concrete mix of M60 grade and crimped steel fibers with aspect ratio 50 are us...
The addition of polypropylene (PP) fibres to high-performance concrete (HPC) is one way to avoid spalling of concrete under fire conditions. The present work contributes both to the understanding of the way in which fibres act and to optimising the fibre dosage. Pore pressure measurements perform...
aDoomed extraordinary 運命づけられた異常 [translate] aIndirect stress due to concrete shrinkage and temperature variations often produces serious cracking in over-long concrete structures 间接重音由于具体收缩和温度变异经常导致严肃崩裂在长的混凝土结构 [translate] ...
aThe value of the damage parameter at the cycle of fatigue (Df) is estimated as the average value of damage at fatigue among all the specimens tested made with the same asphalt concrete mix. 损伤参量的价值在疲劳(Df的)周期估计,当损伤的平均值在疲劳在用同样被测试做的所有标本之中涂柏油混凝土混...
it cannot realize such an ideal Carnot cycle for a real ORC. The shape style should change and depends on the concrete characteristic of heat and cold sources. Hence, the rectangle shape is not applicable to the real ORC for ICE-WHR. For developing a high-efficiency ORC for ICE-WHR, it...
The well-known Fourier law for the two-dimensional (2D) heat transfer isk∂2T∂x2+∂2T∂y2=ρC∂T∂t where T = temperature at the location of (x, y) as a functions of time t; ρ = density of concrete [kg/m3]; k = thermal conductivity of concrete [W/(m‧℃)]; ...