RU2012135869A

RU2012135869A - MIXTURE FOR STRENGTHENING SOILS AND METHOD FOR STRENGTHENING SOILS

Info

Publication number: RU2012135869A
Application number: RU2012135869/03A
Authority: RU
Inventors: Виталий Николаевич Левченко
Original assignee: Общество с ограниченной ответственностью "Производственно-Строительное Объединение "Теплит"
Priority date: 2012-08-21
Filing date: 2012-08-21
Publication date: 2014-02-27

Abstract

1. Смесь для укрепления грунтов, включающая золу, основное минеральное вяжущее, отличающаяся тем, что в качестве золы она содержит золу уноса Рефтинской ГРЭС, в качестве основного минерального вяжущего - портландцемент при следующем соотношении компонентов, мас.%: зола уноса Рефтинской ГРЭС 60-70, портландцемент 30-40, при этом смесь вводят в грунт в сухом виде.2. Способ укрепления грунтов, включающий смешивание местного грунта с наполнителем, уплотнение грунта, отличающийся тем, что в качестве наполнителя применяют сухую смесь на основе золы уноса Рефтинской ГРЭС, включающей, маc.%: зола уноса Рефтинской ГРЭС 60-70, портландцемент 30-40 при количестве смеси 10-15% от объем грунта, для чего предварительно исследуют состав укрепляемого грунта, подбирают соответствующий состав смеси, вводят сухую смесь в грунт, перемешивают и усредняют состав грунта непосредственно на участке строительства, выдерживают перемешенный грунт со смесью в течение расчетного времени в зависимости от типа грунта и объема сухой смеси, затем укрывают его геотканью и слоем щебня и/или грунта для сохранения влаги и фиксации необходимой прочности.3. Способ укрепления грунтов по п.2, отличающийся тем, что при уплотнении дисперсного грунта производят дополнительно уплотнение путем нагнетания уплотняющего и проникающего раствора по контуру зоны уплотнения, например погружением инъектора.4. Способ укрепления грунтов по п.2, отличающийся тем, что при укреплении глинистых грунтов с наличием грунтовых агрегатов (комков) более 5 мм в количестве более 15% производят измельчение грунта.1. A mixture for strengthening soils, including ash, the main mineral binder, characterized in that it contains fly ash of Reftinskaya TPP as ash, Portland cement is the main mineral binder in the following ratio of components, wt.%: Fly ash of Reftinskaya TPP 60- 70, Portland cement 30-40, while the mixture is introduced into the soil in dry form. 2. A method of strengthening soils, including mixing local soil with a filler, compaction of the soil, characterized in that a dry mixture is used as a filler based on fly ash of Reftinskaya TPP, including, wt.%: Fly ash of Reftinskaya TPP 60-70, Portland cement 30-40 when the amount of the mixture is 10-15% of the volume of soil, for which the composition of the soil to be strengthened is preliminarily examined, the appropriate composition of the mixture is selected, the dry mixture is introduced into the soil, mixed and the soil composition is averaged directly at the construction site, maintained emeshenny ground with the mixture for a calculated time depending on the soil type and volume of the dry mixture, then it harboring geotextile and a layer of gravel and / or soil to retain moisture and fixing prochnosti.3 necessary. A method of strengthening soils according to claim 2, characterized in that when compaction of the dispersed soil, an additional compaction is performed by injecting a sealing and penetrating solution along the contour of the sealing zone, for example by immersion of the injector. The method of strengthening soils according to claim 2, characterized in that when strengthening clay soils with the presence of soil aggregates (lumps) of more than 5 mm in an amount of more than 15%, the soil is ground.

Claims

1. A mixture for strengthening soils, including ash, the main mineral binder, characterized in that it contains fly ash of Reftinskaya TPP as ash, Portland cement is the main mineral binder in the following ratio of components, wt.%: Fly ash of Reftinskaya TPP 60- 70, Portland cement 30-40, while the mixture is injected into the soil in a dry form.

2. A method of strengthening soils, including mixing local soil with a filler, compaction of the soil, characterized in that a dry mixture is used as a filler based on fly ash of Reftinskaya TPP, including, wt.%: Fly ash of Reftinskaya TPP 60-70, Portland cement 30- 40 when the amount of the mixture is 10-15% of the volume of soil, for which the composition of the soil to be strengthened is preliminarily examined, the appropriate composition of the mixture is selected, the dry mixture is introduced into the soil, mixed and the soil composition is averaged directly at the construction site, maintained mixed soil with the mixture during the estimated time, depending on the type of soil and the volume of the dry mixture, then cover it with a geotextile and a layer of crushed stone and / or soil to preserve moisture and fix the required strength.

3. The method of strengthening soils according to claim 2, characterized in that when compaction of the dispersed soil, additional compaction is performed by injecting a sealing and penetrating solution along the contour of the sealing zone, for example by immersion of the injector.

4. The method of strengthening soils according to claim 2, characterized in that when strengthening clay soils with soil aggregates (lumps) of more than 5 mm in an amount of more than 15%, the soil is ground.