be within a range of 50°F to 90°F (10°C to 32°C). However, different specified limits are provided depending on the element size and ambient conditions (ACI 301,207). The temperature the concrete exhibits during placement affects the temperature of concrete during the next hydration ...
Behaviour of mortars and concretes in the temperature range from +20°C to -196°CThis paper provides a "state-of-the-art" review of the pertinent properties of concrete at temperatures lower than 165 掳C that make it amenable ... G Tognon 被引量: 6发表: 1969年 Recycled coarse aggregate...
Model samples of concrete were subjected to temperature exposure in the temperature range of 100 to 1000 degrees C and to radiation exposure in the field of mixed and neutron irradiation in the reactor cell at a load of at least 1 x 10(7) Gy. Concrete heating over 200 degrees...
For use in fire resistance calculations, the relevant thermal properties of high-strength concrete (HSC) were determined as a function of temperature. These properties included the thermal conductivity, specific heat, thermal expansion, and mass loss of plain and steel fibre-reinforced concrete made ...
If there is no special temperature control measure like precooling of aggregate, the placing temperature of concrete will vary with the air temperature, so the maximum concrete temperature will also vary with air temperature. The temperature is high in summer and low in winter. For example, the ...
awestern people like girls instead of boys 西部人民喜欢女孩而不是男孩 [translate] al want to become your school a teacher member l想要成为您的学校每老师成员 [translate] athe temperature range for glass door refrigerator.it is 11-18. 玻璃门的温度范围 refrigerator.it 是 11-18。 [translate] ...
In order to enhance the performance of self-consolidating concrete, it is important to have a better understanding of the rheological behavior of the material. The initial rheological parameters and their variations with time are closely affected by material temperature, type and dosage of high range...
Steel fiber reinforcements found in concrete structures are also used for the reinforcement of soil–cement composites [69,135,136]. In addition, steel fibers can improve the soil strength but this improvement is not compared with the case of using other types of fibers [106,137]. Show ...
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] ...
It should be noted that temperature variations within a certain range from the external surface are more pronounced due to the poor thermal storage properties of concrete. For the cooling gradient, the turning points for temperature change occur at 0.45 m from the top surface and 0.4 m from ...