the degree of wetness exhibited by a freely mixed concrete whose value is considered at hand
To satisfy the ASTM standard requirements for normal consistency of cement: The Amount of Water that brings the cement paste to standard condition should vary between 22% to 30% by weight of dry cement.
following factors which affects the consistency of cement:- 1. fineness of cement 2. temperature. 3. method of mixing water . 4. %of admixtures in cement (flyash in case of PPC) 5. w/c ratio
Cement fineness: Finer cement particles generally require more water for standard consistency. Cement composition: Different types of cement with varying compositions can exhibit different normal consistencies. Curing temperature Time of testing Humidity Testing procedure Chemical admixtures
does this cement satisfy ASTM standard requirements for normal consistency
1. Measure the work-ability of cement. 2. Determining the quality test of cement.
Consistency means amount of water needed to prepare a plastic mix.Consistency test is done using Vicat's appartus.Consistency of cement should be less than 30%consistency test is used to find the amount of water to be mixed with cement.It is necessary to find the consistency because amount of water present in the cement paste may affect the setting time.standard consistency is indicated by the vicat plunger reading (5 to 7) from the bottom of mould(IS 4031 (part 4)1988)
consistency of cement 31- 33 %
by standard consistency test we determine standard consistency of cement which is denoted by p. as we know standard consistency value for a cement its value is used for making the paste for determining setting time, soundness, compressive strength of cement
It is normal for Ordinary Portland cement to have a consistency ranging from 25-35%. To prepare cement paste of standard consistency, 25-35% of water must be added to cement. For a more detailed explanation, let us assume that a standard consistency is 30%. To make this quantity, add 30% water to 400g of cement.
40
It mixes stuff...
Yes because white cement quic over the normal cement and he give better finishins as corare to murm cement.