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The following observations are made while testing aggregate for its suitability in pavement construction:
i. Mass of oven-dry aggregate in air = 1000 g
ii. Mass of saturated surface-dry aggregate in air = 1025 g
iii. Mass of saturated surface-dry aggregate under water = 625 g
Based on the above observations, the correct statement is 
  • a)
    bulk specific gravity of aggregate = 2.5 and water absorption = 2.5 % 
  • b)
    bulk specific gravity of aggregate = 2.5 and water absorption = 2.4 %
  • c)
    apparent specific gravity of aggregate = 2.5 and water absorption = 2.5% 
  • d)
    apparent specific gravity of aggregate = 2.5 and water absorption = 2.4 % 
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The following observations are made while testing aggregate for its su...
Mass of oven dry aggregate wa = 1000g
Mass of water in saturated surface dry aggregate = ww
So, wa + ww = 1025
Mass of saturated surface dry aggregate under water = 625 g 



∴ Bulk specific gravity of aggregate
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The following observations are made while testing aggregate for its su...
Observations:
The following observations are made while testing aggregate for its suitability in pavement construction:

i. Mass of oven-dry aggregate in air = 1000 g
ii. Mass of saturated surface-dry aggregate in air = 1025 g
iii. Mass of saturated surface-dry aggregate under water = 625 g

Solution:

Step 1: Calculating Bulk Specific Gravity:
Bulk specific gravity (Gsb) is the ratio of the mass of the aggregate (oven-dry) to the mass of an equal volume of water.

Bulk specific gravity (Gsb) = Mass of oven-dry aggregate in air / Mass of equal volume of water

Given:
Mass of oven-dry aggregate in air = 1000 g
Mass of equal volume of water = Mass of saturated surface-dry aggregate in air - Mass of saturated surface-dry aggregate under water
= 1025 g - 625 g
= 400 g

Bulk specific gravity (Gsb) = 1000 g / 400 g
= 2.5

Step 2: Calculating Water Absorption:
Water absorption (WA) is the percentage of water absorbed by the aggregate.

Water absorption (WA) = [(Mass of saturated surface-dry aggregate in air - Mass of oven-dry aggregate in air) / Mass of oven-dry aggregate in air] * 100

Given:
Mass of saturated surface-dry aggregate in air = 1025 g
Mass of oven-dry aggregate in air = 1000 g

Water absorption (WA) = [(1025 g - 1000 g) / 1000 g] * 100
= 25 / 1000 * 100
= 2.5 %

Conclusion:
Based on the given observations and calculations, the correct statement is:
Bulk specific gravity of aggregate = 2.5 and water absorption = 2.5% (Option A)
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The following observations are made while testing aggregate for its suitability in pavement construction:i. Mass of oven-dry aggregate in air = 1000 gii. Mass of saturated surface-dry aggregate in air = 1025 giii. Mass of saturated surface-dry aggregate under water = 625 gBased on the above observations, the correct statement isa)bulk specific gravity of aggregate = 2.5 and water absorption = 2.5 %b)bulk specific gravity of aggregate = 2.5 and water absorption = 2.4 %c)apparent specific gravity of aggregate = 2.5 and water absorption = 2.5%d)apparent specific gravity of aggregate = 2.5 and water absorption = 2.4 %Correct answer is option 'A'. Can you explain this answer?
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The following observations are made while testing aggregate for its suitability in pavement construction:i. Mass of oven-dry aggregate in air = 1000 gii. Mass of saturated surface-dry aggregate in air = 1025 giii. Mass of saturated surface-dry aggregate under water = 625 gBased on the above observations, the correct statement isa)bulk specific gravity of aggregate = 2.5 and water absorption = 2.5 %b)bulk specific gravity of aggregate = 2.5 and water absorption = 2.4 %c)apparent specific gravity of aggregate = 2.5 and water absorption = 2.5%d)apparent specific gravity of aggregate = 2.5 and water absorption = 2.4 %Correct answer is option 'A'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about The following observations are made while testing aggregate for its suitability in pavement construction:i. Mass of oven-dry aggregate in air = 1000 gii. Mass of saturated surface-dry aggregate in air = 1025 giii. Mass of saturated surface-dry aggregate under water = 625 gBased on the above observations, the correct statement isa)bulk specific gravity of aggregate = 2.5 and water absorption = 2.5 %b)bulk specific gravity of aggregate = 2.5 and water absorption = 2.4 %c)apparent specific gravity of aggregate = 2.5 and water absorption = 2.5%d)apparent specific gravity of aggregate = 2.5 and water absorption = 2.4 %Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The following observations are made while testing aggregate for its suitability in pavement construction:i. Mass of oven-dry aggregate in air = 1000 gii. Mass of saturated surface-dry aggregate in air = 1025 giii. Mass of saturated surface-dry aggregate under water = 625 gBased on the above observations, the correct statement isa)bulk specific gravity of aggregate = 2.5 and water absorption = 2.5 %b)bulk specific gravity of aggregate = 2.5 and water absorption = 2.4 %c)apparent specific gravity of aggregate = 2.5 and water absorption = 2.5%d)apparent specific gravity of aggregate = 2.5 and water absorption = 2.4 %Correct answer is option 'A'. Can you explain this answer?.
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