US 2026/0159757 A1Published application

Method for Enhancing Soil Properties Using Nano-Additives or Pico-Additives in Deep Soil Mixing (Nano-DSM or Pico-DSM)

OwnerHamed NIROUMAND, Lech Balachowskiinventors

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Abstract

A method for enhancing soil properties in order to obtain an enhanced soil using a first mixture comprising a cement nano-additives and/or pico-additives and water in deep soil mixing is realized by an equipment for performing the method according to this invention. The nano-additives or pico-additives are selected from the group including a nano-fly ash, a nano-rice husk, a nano-cement, a nano-bentonite, a nano-clay, a nano-illite, and a nano-kaolinite. The nano-additives or pico-additives are ground to nano or pico sizes using preferably a ball mill. The optimal mix ratio of water-to-the nano-additives or pico-additives ranges from 1:4 to 4:1 wt./wt.

Claims6

Dependent claims

A method for enhancing soil properties in order to obtain an enhanced soil using a first mixture comprising cement, nano-additives and/or pico-additives and water in deep soil mixing, comprising the following steps:

Step A—obtaining a soil sample from a construction site,
Step B—identifying and testing physical and mechanical properties of the soil sample,
Step C—determining required amount and recommended mixing composition of the first mixture with the soil by using predetermined tests data and/or test results from Step F,
Step D—preparing and mixing the required amount of the nano-additives such cement, clay types, etc., and/or pico-additives, and water in order to obtain the first mixture,
Step E—mixing the prepared amount of the first mixture with the soil by using a mixer in order to obtain a second mixture,
Step F—performing the test on the obtained second mixture and if the properties of the second mixture are as required, performing the Steps H-N, if not, performing Steps G and F again,
Step G—cancelling the results of the previous Steps D and E, and going back to Step C again,
Step H—deep drilling in the predetermined places on the construction site,
Step I—applying or pumping the second mixture or the enhanced second mixture, wherein the second mixture or the enhanced second mixture is an enhanced slurry, into the drilled soil in the predetermined places on the construction site using a device for supplying the enhanced slurry into the drilled soil,
Step J—mixing the soil with the enhanced slurry by using a deep soil mixing machine in order to obtain a third mixture,
Step K—injecting nano stabilizer to the third mixture, and
Step L—mixing the third mixture with the nano stabilizer in the drilled soil in order to obtain a forth mixture,
Step M—curing the forth mixture in order to obtain the enhanced soil,
Step N—continuously controlling amount of moisture in the enhanced soil and if necessary adjusting the amount of moisture by adding required amount of water in order to obtain the desired performance criteria of the enhanced soil.

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Dependencies are inferred from the claim text.

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Abstract

Step A—obtaining a soil sample from a construction site,
Step B—identifying and testing physical and mechanical properties of the soil sample,
Step C—determining required amount and recommended mixing composition of the first mixture with the soil by using predetermined tests data and/or test results from Step F,
Step D—preparing and mixing the required amount of the nano-additives such cement, clay types, etc., and/or pico-additives, and water in order to obtain the first mixture,
Step E—mixing the prepared amount of the first mixture with the soil by using a mixer in order to obtain a second mixture,
Step F—performing the test on the obtained second mixture and if the properties of the second mixture are as required, performing the Steps H-N, if not, performing Steps G and F again,
Step G—cancelling the results of the previous Steps D and E, and going back to Step C again,
Step H—deep drilling in the predetermined places on the construction site,
Step I—applying or pumping the second mixture or the enhanced second mixture, wherein the second mixture or the enhanced second mixture is an enhanced slurry, into the drilled soil in the predetermined places on the construction site using a device for supplying the enhanced slurry into the drilled soil,
Step J—mixing the soil with the enhanced slurry by using a deep soil mixing machine in order to obtain a third mixture,
Step K—injecting nano stabilizer to the third mixture, and
Step L—mixing the third mixture with the nano stabilizer in the drilled soil in order to obtain a forth mixture,
Step M—curing the forth mixture in order to obtain the enhanced soil,
Step N—continuously controlling amount of moisture in the enhanced soil and if necessary adjusting the amount of moisture by adding required amount of water in order to obtain the desired performance criteria of the enhanced soil.

11 more elements