DHARM
N-GEO\OBJ.PM5 892892 GEOTECHNICAL ENGINEERING
- Waterproofers do not increase the strength of the soil but help it retain its strength even
in the presence of water. True/False - ............ and ............ resins have also been used for soil stabilization.
- Chemicals which function by altering the electrical forces between the soil particles of
colloidal size, but provide no cementing action, are generally known as ............ and
............. - ............ is a direct method for soil exploration.
- ............ and ............ are indirect methods of soil exploration.
- Two common types of augers are ............ auger and ............ auger.
- A commonly used thickwall type of soil sampler is called ............ sampler, standardized
by ISI. - Sample disturbance is characterized by ............ of a sampler. The maximum desirable
limit for this is ............. - ............ and ............ are the most commonly used geophysical methods of soil explora-
tion. - The ............ method of geophysical exploration fails when a hard layer overlies a soft
layer. - The ............ configuration with four equally spaced electrodes is popularly used in the
............ method of geophysical exploration. - The resistivity of rocks is ............ than that of soils.
- For horizontal coverage, electrical ............ and for vertical coverage, electrical ............
and for vertical coverage, electrical ............ are commonly used in the resistivity method
of soil exploration. - Caissons are broadly classified into three types: (a) ............ (b) ............ (c) .............
- The additional weight required to sink a caisson over and above it self weight is called
............. - The thick concrete layer placed at the bottom of a caisson is known as the .............
- An open caisson is one which is, during construction,
(a) open at the top and closed at the bottom.
(b) open both at the top and at the bottom.
(c) open at the top and closed at the top. - A pneumatic cassion is one which is, during construction,
(a) closed at the top and open at the bottom.
(b) open both at the top and at the bottom.
(c) open at the top and closed at the bottom. - ‘Caisson disease’ may occur in persons working under .............
- Better control and working conditions are provided in the case of a ............ caisson.
- A box caisson is one which is, during construction,
(a) closed at the top and open at the bottom.
(b) open both at the top and at the bottom.
(c) open at the top and closed at the bottom.