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Flash setting in cement refers to the rapid hardening of cement that occurs when water is added to the dry mix. This phenomenon can lead to a quick loss of workability, making it difficult to manipulate the cement before it sets. Flash setting is often undesirable in construction because it can complicate the mixing and application processes. It can be caused by factors such as high temperatures or the presence of certain additives.
What else can I help you with?
What is false setting of cement?
False-setting is when cement abnormally and prematurely sets.
Can you reuse the cement after it has crossed its setting time?
yes, if it is before the initial setting time...
What is initial setting time of cement?
It's the time from which cement starts the setting process after water is added.. Usually it is 30 min.. It can be delayed or advanced using chemicals..
What is rain forced cement concrete?
It is not rain forced but re-inforced cement concrete. It means the concrete after setting and hardening.
Does gypsum improve strength if added to concrete?
Gypsum can improve the workability and setting properties of concrete, but it does not significantly enhance the overall strength of the concrete itself. Instead, gypsum is primarily used to control the setting time of cement and to prevent flash setting. While it helps in achieving a more uniform mix and can contribute to durability, the primary strength gains in concrete come from the hydration of cement and the aggregate properties. Therefore, while gypsum plays a supportive role, it is not a primary strength-enhancing additive.
What is flash and false setting of cement?
yes I'm also little confused ..
Why 2 gypsum is added in the cement?
The construction industry uses both the natural and the synthetic forms of gypsum in Portland cement manufacturing. Although the amount of gypsum used in the mix represents a small percentage of the volume of all ingredients, gypsum has important functions.
What is the difference between false set and flash set of cement?
False set occurs when cement appears to set but can still be remixed and flow, while flash set is a rapid and irreversible setting of cement that cannot be reversed. False set can be corrected by adding more water and re-mixing, while flash set requires the cement to be discarded and fresh cement to be used.
What is false setting of cement?
False-setting is when cement abnormally and prematurely sets.
How gypsum effect the setting time of cement?
gypsum increase the setting time of cement.
What is the importance of setting time?
because when we know the setting time of cement we easily identified that where can we use the cement according to there setting time.
Can you reuse the cement after it has crossed its setting time?
yes, if it is before the initial setting time...
Why gypsum added to cement?
3% of gypsum is added to cement to "prevent the rapid setting of cement"
What is the effect on setting time of cement if water added is less or more than 85 percent of normal constituency of cement?
how the water mixed with cement affects the time of its setting
What is the importance of setting time of cement?
because when we know the setting time of cement we easily identified that where can we use the cement according to there setting time.
Why 2 of gypsum is added to cement?
Gypsum is added to cement to decrease the setting time.
What is initial setting time of cement?
It's the time from which cement starts the setting process after water is added.. Usually it is 30 min.. It can be delayed or advanced using chemicals..
