SU981329A1 - Binder for stabilizing soil - Google Patents

Description

(54) BINDING FOR STRENGTHENING SOIL

The invention relates to the construction and technical amelioration of soils and can be used in the construction of pipelines to strengthen the soil.

It is well known for strengthening. soil, including the bottom residue of the distillation of the cracked petroleum residue (40-75%) and low-ointment oil fraction (25-6O%).

However, the soil reinforced by this latter has low strength properties.

The closest Kg of the invention to the technical essence and the achieved result is stinging for strengthening,

G T

no soil 1, including, wt.%: The remainder of the thermal recovery of tar 25-75

Light gasoil COKEOwavi 25-7520

The disadvantages of ordering a binder are low strength and water resistance.

The purpose of the invention is to increase the strength and water resistance of the soil.

This goal is achieved by the fact that, in addition to strengthening the soil, the cyclic residue of thermal cracking of gu. Drone and light gas oil coking further contains a pitch of phenolic resin in the following ratio of components, wt.%:

Thermal residue

cracking of tar 67,2-73,6

Light coke gas oil

vani 16.8-18,4

Pitch of phenolic resin 8, O-16, O

Phenolic resins are bottoms from the production of phenol and acetone, in industry they are used as a component of boiler fuel.

Pitch of phenolic resin is obtained in the process of thermal-oxidative condensation of phenolic resins at 150-ZOO C in the air flow. Under these conditions, deep condensation processes occur with the formation of polycyclic aromatic compounds of the phenol type (polyalkhplpilenoxvov), which have a high reactivity.

I In the process, thermocouple coen- enses of phenol resin up to 25-30 wt.% Of pitch are obtained.

In tab. Figure 1 shows the physical-hive properties of phenolic resin pitch.

In the ground is prepared by mixing light gas oil coking with melted phenol-A resin baking, followed by the addition of cracking residue.

The name of indicators

Density, kg / m

The softening efficiency rate according to EIS, Ash content, wt.% Coking ability, wt.% Elemental composition, wt.%: С

n o

Group hydrocarbon composition, Paraffin-naphtha monchecyclic aromatic bicyclic aromatic polycyclic aromatic resins. Asphaltenes

The residue of thermal cracking of tar

Light gas oil coking Pitch phenolic resin

in tab. 2 shows three examples of a specific formulation of the mixture.

Soil is treated with the indicated mixtures at the rate of 8 wt.%, Which is ground on dry soil.

In tab. 3 shows the results of unique soils, reinforced in the holding of the proposed composition in comparison with the holding prototype.

The soil, reinforced in the holding of the proposed composition has high strength and water resistance.

Table 1

Indicators

1071

57 0.49

25.0

83.49 6.54 9.97

6.42 53.91 39.67

Tabli ca 2

73.67O, 2. 67.2

18,417.8 16.8

81216

the heat residue of thermal cracking of gdron; and light gas oil coking, from. This is because, in order to increase the strength in the water resistance of the soil, it additionally contains phenol resin pitch with the following ratio of components, wt.%:

Thermal residue

cracking of tar 67, Q

Table 3

Sources of nnformavvv taken into account prv ekspergvee

1.Lvtorsoe efidedesgvo

according to application no. 2866441, cl. B O2 D 3/12, 1979.

2. USSR author's certificate for application number 2784674 / 29-33,

cl. C 08L (prototype).

Claims (2)

The claims ²⁰ An astringent to strengthen the soil, including the remainder of the thermal cracking of the hydron and light coking gas oil, from. li-sistent in that from ²⁵ to increase the strength of the 'soil and water resistance, further comprising a pitch phenolic resin at the following component ratio, wt.%: The remainder of thermal tar cracking ³⁰ 67.2-73.6 Light coking gas oil 16.8-18.4 Pitch of phenolic resin ¹ 8.0-16.0 Sources of information taken into account during the examination 1, Copyright certificate of the USSR on application No. 2866441, cl. E 02 O 3/12, 1979. 2. USSR author's certificate on application No. 2784674 / 29-33, cl. C 08 L 95 / 00.1979 (prototype).