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Q: What is the name of ash, as per IS 3812 (Part-I) 2013, which is prepared from fly ash or bottom ash or both mixed in any proportion and conveyed or carried in dry form and deposited dry
  • A. Calcareous fly ash
  • B. Mound ash
  • C. Pulverized fuel ash
  • D. Pond ash
Correct Answer: Option B - As per IS 3812 (Part-I) : 2013 Mound ash– Fly ash or bottom ash or both mixed in any proportion and conveyed or carried in dry form and deposited dry. Pond ash– Fly ash or bottom ash or both mixed in any proportion and conveyed in the form of water slurry and deposited in pond or lagoon. Pulverized fuel ash– Ash generated by burning of ground or pulverized or crushed coal or lignite fired boilers. It can be fly ash, bottom ash, pond ash or mound ash. Calcareous fly ash– Fly ash conforming to the provision of calcareous fly ash given in this standard and having reactive calcium oxide not less than 10%. Such fly ash is normally produced from burning lignite bituminous coal and has both pozzolanic and hydraulic proportion.
B. As per IS 3812 (Part-I) : 2013 Mound ash– Fly ash or bottom ash or both mixed in any proportion and conveyed or carried in dry form and deposited dry. Pond ash– Fly ash or bottom ash or both mixed in any proportion and conveyed in the form of water slurry and deposited in pond or lagoon. Pulverized fuel ash– Ash generated by burning of ground or pulverized or crushed coal or lignite fired boilers. It can be fly ash, bottom ash, pond ash or mound ash. Calcareous fly ash– Fly ash conforming to the provision of calcareous fly ash given in this standard and having reactive calcium oxide not less than 10%. Such fly ash is normally produced from burning lignite bituminous coal and has both pozzolanic and hydraulic proportion.

Explanations:

As per IS 3812 (Part-I) : 2013 Mound ash– Fly ash or bottom ash or both mixed in any proportion and conveyed or carried in dry form and deposited dry. Pond ash– Fly ash or bottom ash or both mixed in any proportion and conveyed in the form of water slurry and deposited in pond or lagoon. Pulverized fuel ash– Ash generated by burning of ground or pulverized or crushed coal or lignite fired boilers. It can be fly ash, bottom ash, pond ash or mound ash. Calcareous fly ash– Fly ash conforming to the provision of calcareous fly ash given in this standard and having reactive calcium oxide not less than 10%. Such fly ash is normally produced from burning lignite bituminous coal and has both pozzolanic and hydraulic proportion.