According to theAmerican Concrete Institute, hot weather is more than just air temperature. Hot weather is defined as ambient temperatures above 90 °F, including low humidity and high wind speeds. In conditions hotter than 77 °F, the water used to hydrate and cure the cement can evaporate, ...
Check temperatures: While the concrete is being cured, verify the temperature using an infrared temperature gun. Make sure the concrete maintains a temperature of at least 40°F during its curing period. Guard against concrete cooling too rapidly: This can be done by gradually lowering the tempera...
"Those who choose to seal concrete at temperatures below 50°F increase their risk of failure substantially," said Sullivan. For tips on using sealers at or close to 50°F, see "Sealing Concrete in Cold Weather." Using curing blankets on colored concrete is difficult without getting a mottle...
Concrete should not be placed when temperatures will drop below 20F. The colder the temperature, the longer it will take concrete to cure. If concrete is placed in weather below 40˚F, use curing blankets to keep the concrete warm during the initial few days of the curing process. ...
Prepare for hot or wet weather. High temperatures can accelerate the chemical reaction that causes the concrete to transform from a plastic mixture to man-made stone. You can have the concrete company add chemicals that will slow this reaction. Do not add water to the concrete mix to make it...
Different initial temperatures at the joint faces during concrete construction result in errors during calculation of the temperature fields.The mathematical cause of this was determined by analyzing the partial differential equations describing heat exchange and by the finite element method.The principle of...
Antenna hung above the high than building roof not more than (10m) can be increased a simple roof rack, in the construction of the beam (wall)atpouringconcrete pier as a counterweight (calculate concrete weight enough to resist the hob overturning force) higher frame fixed on the concrete pie...
aABSTRACT: The aim of this paper is to assess the performance of self-compacting glass concrete (SCGC) after exposure to four elevated temperatures of 300°C, 500°C, 600°C and 800°C. The influence of curing conditions on the high temperature performance of SCGC was also investigated. For...
concrete edgesearly-age temperature fieldIn engineering practice, similar surface insulation measures are typically applied to different parts of mass concrete surfaces. However, this can lead to cracking at the edges of the concrete surface or the wastage of insulation materials. In comparison to ...
Facing the local high-temperature climate conditions, the project team adopted reasonable and strict control measures to ensure the temperature control of concrete during the construction process. At the same time, the team continuously strengthened communication and collaboration with the property owner an...