Rapid consolidation and compaction method for soil improvement of various layers of soils and intermediate geomaterials in a soil deposit

Pending Publication Date: 2022-07-28
GUPTA RAMESH CHANDRA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Many organizations do not allow vibratory probes to drive pipes in clayey soils.
In sand drain technology, embankment is placed on the site area to consolidate and densify the area, which also results in densification of sand drains which consists of loose

Method used

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  • Rapid consolidation and compaction method for soil improvement of various layers of soils and intermediate geomaterials in a soil deposit
  • Rapid consolidation and compaction method for soil improvement of various layers of soils and intermediate geomaterials in a soil deposit
  • Rapid consolidation and compaction method for soil improvement of various layers of soils and intermediate geomaterials in a soil deposit

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Embodiment Construction

[0031]The main motivation for the invention of the rapid consolidation and compaction method (RCCM) is to develop a method for soil improvement which can densify a layer of the soil or the intermediate geomaterial (IGM) in a soil deposit. Cohesionless soils are defined as having N60 less than 50 blows / 0.3 m, whereas cohesionless Category 3 IGMs are defined as having N60 greater than 50 blows / 0.3 m (AASHTO, 2012). Cohesive soils are defined as having undrained shear strength less than 0.25 MN / m2, whereas cohesive IGMs Category 1 are defined as having undrained shear strength greater than 0.25 MN / m2 (AASHTO, 2012). The invention in this application comprises of a rapid consolidation and compaction method (RCCM) to produce rapid consolidation of the layer of clayey soil resulting in increase of its density and consistency. The RCCM comprises (i) first driving a hollow pipe section to some depth to minimize heave at the ground surface or above the layer of soil requiring improvement, (i...

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Abstract

The rapid consolidation and compaction method comprises (i) first driving a hollow pipe, (ii) driving a pipe with a removable end plate after filling and compacting the sandy material in it, through the hollow pipe, to required depth, creating high excess pore-water pressures in the range of 50 to 300 KPa in clayey soils, (iv) pulling out the pipe section leaving behind the removable end plate and thereby installing porous displacement piles which allows dissipation of the excess pore-water pressures horizontally to the porous displacement pile, in which the excess water flows out vertically to the ground surface, and (v) the length of the drainage path is reduced to half the spacing between adjoining porous displacement piles, allowing rapid consolidation resulting in increase in density. Installing the porous displacement piles in the layer of loose to medium dense sand layer results in the instantaneous increase in its density.

Description

TECHNICAL FIELD[0001]This application is for applying for a utility patent in a technical field which includes civil engineering and geotechnical engineering for soil densification of layers of soils and intermediate geomaterials in a soil deposit. This specification / description is complete-in-itself. This invention is not sponsored or supported by federally sponsored research or development or by any other organization. This invention has been conceived, developed and completed independently by the inventor, Dr. Ramesh Chandra Gupta, Ph. D., P.E, President and Sole Owner of SAR6 INC. The inventor, Dr. Ramesh Chandra Gupta is a Citizen of the United States of America.BACKGROUND OF INVENTION[0002]Sand drain technique to strengthen the weak soils (Kennedy and Woods, 1954) has been in wide use from long time. Bowles, 1988 summarized the method of Sand Drains to strengthen and consolidate clayey soil layers which cannot support the load of the embankment or foundation structures. A circ...

Claims

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Application Information

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IPC IPC(8): E02D5/66E02D7/06E02D27/16E02D27/34
CPCE02D5/665E02D7/06E02D2250/0007E02D27/34E02D2300/002E02D27/16E02D3/08E02D3/106E02D7/02
Inventor GUPTA, RAMESH CHANDRA
Owner GUPTA RAMESH CHANDRA
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