While higher temperatures speed up the initial curing process, temperatures that are too high can negatively impact the curing process by making the concrete surface more prone to cracking. What happens when concrete gets too hot? Hot concrete is less workable which makes it harder to place. This...
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...
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. ...
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...
In 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 flat surfaces, the edges of ma...
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...
However, the demand for concrete still increases yearly with the rapid development of infrastructure construction. For example, it is estimated that 1.53 m3 (2 yd3) of concrete per person is placed each year to support the U.S. infrastructure [5]. The consumption of cement in the United ...