JNTU
JNTU B.Tech IV GROUND IMPROVEMENT TECHNIQUES Previous Question Paper (May - 2019 - R15)
Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
PART - A
List the types of soils.
Answer
Soils are primarily classified into coarse-grained soils (gravel and sand) and fine-grained soils (silt and clay). Additionally, they can be categorized as organic soils, peat, and composite soils based on their composition and engineering properties.
Discuss about objectives of ground improvement.
Answer
The primary objectives of ground improvement are to increase the shear strength of the soil, reduce its compressibility to minimize settlement, decrease permeability to control seepage, and improve the overall stability of slopes and foundations. It also aims to mitigate liquefaction potential in seismic zones.
Write about objectives of ground modification using mechanical methods.
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Discuss about blasting technique.
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Write about applications of vertical drains in ground.
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List the objectives and techniques involved in hydraulic modification.
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Discuss about crack grouting.
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Describe the principle involved in physical modification for ground improvement.
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List the objectives of soil reinforcement.
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discuss briefly about rock bolting.
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PART - B
Explain the various laboratory tests to identify problematic soils and discuss the remedial measures for ground improvement.
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Explain about heating and cooling methods for ground improvement.
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Explain in detail about compaction piles.
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Explain about vibro-replacement technique with a neat sketch.
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Explain about filtration and drainage using geosynthetics in ground and its applications.
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Discuss about preloading technique with a neat sketch and its applications.
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Explain about compaction grouting technique with a neat sketch.
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Explain about shotcreting and guniting technology in soils.
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Explain about methods of soil reinforcement with strip and grid reinforcement.
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Explain about stability factors involved in soil reinforcement.
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