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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..
Does this cement satisfy ASTM standard requirement for initial setting time?
To determine if the cement satisfies ASTM standard requirements for initial setting time, you must compare the measured setting time of the cement with the specific limits outlined in the relevant ASTM standard (such as ASTM C191 for hydraulic cement). Generally, the initial setting time should not exceed 60 minutes for most types of hydraulic cement. If the measured setting time falls within this range, then it meets the standard; otherwise, it does not. Always refer to the specific ASTM standard for the exact requirements applicable to the type of cement being evaluated.
What is the setting time for 52.5N grade cement and what is it for 52.5R grade cement?
The setting time for 52.5N grade cement typically ranges from 30 to 90 minutes for initial setting and up to 10 hours for final setting, depending on the specific formulation and environmental conditions. In contrast, 52.5R grade cement, which has a higher strength and faster setting properties, usually has a shorter initial setting time, around 20 to 60 minutes, and a similar final setting time of up to 10 hours. These times can be influenced by factors such as temperature, humidity, and the presence of additives.
What is initial Setting time?
An arbitrary division has been made for the setting time of cement as initial setting time and final setting time.It is difficult to draw a rigid line between these two arbitrary divisions.For convenience,initial setting time is regarded as the time elapsed between the moment that the water is added to the cement,to the time that the paste starts losing its plasticity.The final setting time is the time elapsed between the moment that the water is added to the cement ,and the time when the paste has completely lost its plasticity and has attained sufficient firmness to resist certain definite pressure.
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...
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.
What is the final setting time if cement?
initialy setting time up to 10min. & final setting time upto 10 hours
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..
Does this cement satisfy ASTM standard requirement for initial setting time?
To determine if the cement satisfies ASTM standard requirements for initial setting time, you must compare the measured setting time of the cement with the specific limits outlined in the relevant ASTM standard (such as ASTM C191 for hydraulic cement). Generally, the initial setting time should not exceed 60 minutes for most types of hydraulic cement. If the measured setting time falls within this range, then it meets the standard; otherwise, it does not. Always refer to the specific ASTM standard for the exact requirements applicable to the type of cement being evaluated.
What are the name of admixture that effect on the setting time of cement?
retarder increases time to set, accelerator decreases setting time
What are the factors affecting the initial setting time of cement?
When cement is mixed with water, it forms slurry which gradually becomes less plastic with the passage of time & finally a hard mass is obtained. In this process, at a certain stage when the cement paste is sufficiently rigid to withstand a definite amount of Pressure, it is said to have set & the time required to reach this stage is termed as "setting time".
What is the setting time for 52.5N grade cement and what is it for 52.5R grade cement?
The setting time for 52.5N grade cement typically ranges from 30 to 90 minutes for initial setting and up to 10 hours for final setting, depending on the specific formulation and environmental conditions. In contrast, 52.5R grade cement, which has a higher strength and faster setting properties, usually has a shorter initial setting time, around 20 to 60 minutes, and a similar final setting time of up to 10 hours. These times can be influenced by factors such as temperature, humidity, and the presence of additives.
