Chemical hydration processes are slow down by this compound. So, the concrete remains plastic and can work for a long time. As per the definition of a retiree, he cancels the cement process. This increases the setting time of the cement mixture allowing proper use of the cement mixture after mixing in a controlled machine. Speed bumps are used to counter the rapid effects of high temperatures on the properties of concrete in hot climates. Retirees used to unite large numbers of dolls without forming cold joints. It is also used for grinding oil wells. Oil wells sometimes reach a depth of about 5,999 meters with a temperature of around 220 degrees Celsius. The gap between the steel tube and the wall of the well must be sealed with cement mortar.
Sometimes chains may be required at the level or depth of deep rock to prevent gas or oil from entering another level. For all this work the cement should be in a condition to last for about 3 to 4 hours, even without high temperatures. Inhibitory agents are often used for such purposes.
Sometimes it is necessary to keep the concrete in difficult conditions, and there are delays in transportation and placement. In ready-mixed concrete drills, the concrete is prepared in a central batch plant and transported remotely to workplaces, which requires considerable time. In the above cases, the accuracy of the concrete must be maintained so that the final structure and compacted concrete are in the ideal plastic condition.
According to ES 9103: 1999 ‘(Concrete Mixing-Specification (previous revision)), “A compound that delays the determination of cement mortar, therefore a mortar or a mixture containing concrete is called a retarding agent. Concrete retarders are also called classified money regulators.
Water reducers are regenerating devices and super-plastics concrete mixtures that are added to reduce the amount of water in the mixture or to slow down the adjustment of concrete settings while maintaining the flow characteristics of the concrete mixture.
They are modifications that are added to concrete (or mortar/putty) to slow down the setting and thus provide a longer time working with the concrete. Thus the backside expands the time allotted to the cement system.
They reduce the rate of hardening so that you can expand the workability (prevent setting) of the concrete during placement. This is advantageous for complex, hand-finished concrete placements such as grouting.
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