Cold weather, in terms of concrete pours, is more than three successive days when the averagedaily air temperaturedrops below 40°F and stays below 50°F for more than one-half of any 24-hour period.1Under these cold weather conditions, special techniques need to be applied. Longer work pe...
Temperatures above 90 degrees Fahrenheit are considered too high for concrete pouring. This is because water in the concrete mix can evaporate faster, which results in shrinkage cracks and less strength than concrete that cures under normal conditions. Additionally, direct sunlight on a hot day can...
Pouring concrete in cold weather can be tricky. Get expert tips for dealing with frozen ground, worker safety and more so your concrete turns out well.
Hot weather can cause problems for concrete at some point, usually between 75oF and 100oF. Low relative humidity and high wind speed cause the most problems most of the time. The harsh sun and high temperature, along with these conditions, make it very likely that problems will happen. Ther...
Before concrete pouring should know the weather situation in a timely manner. 在具体瓦砾最大微粒大小和转达的管子直径的比率适当为1:3,沙子比率应该在40% ~ 45%,水水泥比率之间应该在0.5 ~ 0.55之间,暴跌应该在15之间到18 cm。 在混凝土倾吐应该及时之前地知道天气情况。 [translate] ...
In cold weather, the temperature of the concrete can be controlled by providing appropriate curing conditions to maintain insulation and strength gain, such as the use of heating systems. High curing temperatures can also be controlled when mass pouring with cooling pipes. ...
a砼浇筑采用插入式和平板式振捣器联合振捣,人工配合振捣梁找平,修整完成后的2小时内,采用土工布覆盖洒水养生,以防砼表面遭受风吹日晒而开裂。 tong the construction uses the jack-in type and the plate-type vibrator inspires jointly pounds, the manual coordination inspires pounds Liang to level, the condi...
The article discusses WeatherAPP, a smartphone application from Holcim that provides a four-day forecast for temperature, wind speed, and humidity, useful information to those pouring concrete. WeatherAPP can help prevent plastic-shrinkage cracking by calculating the likelihood of that happening under ...
In neighbouring Yunnan Province, six people were killed and 35 injured in rain-related disasters, including the partial collapse of a steel and concrete bridge over the Yuan River in Yuxi county, about 60 miles south of the provincial capital of Kunrning. Earlier, at least 29 others were ...
In this paper,the effects of unfavourahle conditions during rainy season on the construction quality are discussed,such as materials,steel welding and concrete pouring. 文中详细介绍了雨季施工不利条件对建筑材料、钢材焊接和混凝土浇注施工工艺对工程质量的影响。 更多例句>> 4) deposit concrete 浇注混...