Question
Download Solution PDFPycnometer is used to determine
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Pycnometer method
It is used to determine specific gravity and water content both. This method is suitable for cohesionless soils.
Pycnometer is a glass jar of 1-liter capacity that is fitted at its top by a conical cap made of brass. It has a screw type cover and there is a small hole at its apex of 6 mm diameter.
W1 = Mass of empty volume of pycnometer
W2 = Mass of pycnometer + Mass of moist sample
W3 = Mass of pycnometer + soil + water
W4 = Mass of pycnometer full of water
Gs = Specific gravity of soil solids
Water content of the soil sample is given by:
\(w = \left( {\frac{{{W_2} - {W_1}}}{{{W_3} - {W_4}}}} \right)\left( {\frac{{G - 1}}{G}} \right) - 1\)
Specific gravity is usually reported at 27°C and it is given by:
\(G_s=\frac{{{W_2} - {W_1}}}{{\left( {{W_2} - {W_1}} \right) - \left( {{W_3} - {W_4}} \right)}}\).
Last updated on Jul 1, 2025
-> JKSSB Junior Engineer recruitment exam date 2025 for Civil and Electrical Engineering has been rescheduled on its official website.
-> JKSSB JE exam will be conducted on 31st August (Civil), and on 24th August 2025 (Electrical).
-> JKSSB JE application form correction facility has been started. Candidates can make corrections in the JKSSB recruitment 2025 form from June 23 to 27.
-> JKSSB JE recruitment 2025 notification has been released for Civil Engineering.
-> A total of 508 vacancies has been announced for JKSSB JE Civil Engineering recruitment 2025.
-> JKSSB JE Online Application form will be activated from 18th May 2025 to 16th June 2025
-> Candidates who are preparing for the exam can access the JKSSB JE syllabus PDF from official website of JKSSB.
-> The candidates can check the JKSSB JE Previous Year Papers to understand the difficulty level of the exam.
-> Candidates also attempt the JKSSB JE Mock Test which gives you an experience of the actual exam.