a) 1 hourb) 30 minutesc) 15 minutesd) 30 hours Answer: bExplanation: As per IS code ...
View QuestionWhich equipment is used to test the setting time of cement?
a) Core cutterb) Vibratorc) Universal testing machine (UTM)d) Vicat apparatus Answer: dExplanation: Core cutter is ...
View QuestionWhich of the below mentioned is not a result of field test performed on cement?
a) There should not be any lumpsb) It should feel cold when you put your hand in bag ...
View QuestionTime elapsed from the instance of adding water until paste ceases to behave as fluid is called:
a) Initial setting timeb) Final setting timec) Intermediate setting timed) Absolute setting time Answer: aExplanation: ...
View QuestionWhat is the meaning of soundness of cement?
a) Ability to flow when mixedb) Ability to make ringing noise when struckc) Ability to form strong and ...
View QuestionWhat is the average particle size of cement?
a) 15 micronsb) 45 micronsc) 75 micronsd) 100 microns Answer: aExplanation: Approximately 95% of cement ...
View QuestionWho invented Portland cement and in which year?
a) William Aspdin, 1824b) William Aspdin, 1840sc) Joseph Aspdin, 1840sd) Joseph Aspdin, 1824 Answer: bExplanation: ...
View QuestionWhy is natural cement used very limitedly?
a) Brown in Colourb) Standard consistency is not met withc) Sets too quicklyd) Particle size is too fine
View QuestionLime is widely used for:
a) Waste water treatmentb) Manufacturing tilesc) Jewellery makingd) As an aggregate Answer: aExplanation: Hydrated Lime ...
View QuestionWhich of the following ions causes the cement to set quickly?
a) Sulphateb) Carbonatec) Chlorided) Nitrate Answer: aExplanation: Sulphate arrests slaking and hence cement can set ...
View Question