Improved road-building soil

FIELD: construction.

SUBSTANCE: invention relates to construction and can be used for construction of an earth bed and a device of reinforced road bases on roads of categories I-V in road climatic zones II-V, as well as pavements on roads of categories IV-V as material for construction of earth bed fills and reinforcement of soil bases of construction and other sites. Improved road-building soil is characterised by the fact that it is obtained from a mixture containing the following, wt %: cement 5-15, waste of thermal utilisation of oil slurries - ash and slag with density of 1.2 to 1.6 kg/dm3 30-40, mineral filler 0-30, peat sorbent 2-4, drilling slurry with density of 1.3 to 1.8 kg/dm3 is the rest.

EFFECT: reduction of consumption of cement and fillers; utilisation of wastes.

7 dwg, 7 ex

 

The invention relates to the construction and can be used for the construction of subgrade and devices fortified road bases on the roads I-V categories in the II-V-road-climatic zones, as well as coatings on the roads IV-V categories as material for the construction of embankments, subgrade and strengthening of soil building and other sites.

From the patent of the Russian Federation 2303011 known building material "Barolet, including drill cuttings, cement, urea-formaldehyde foam, characterized in that it contains cuttings density from 1.3 to 1.8 kg/DM3, urea formaldehyde foam density of 10-30 kg/m3in the amount of 10-25% by volume of drill cuttings, cement in the amount of 10-20% of the volume of drill cuttings and additionally mineral filler with a particle size of from 2.7 to 3.1 mm, selected from the group consisting of sand and crushed granite, in the amount of 10-20% of the volume of drill cuttings.

The mixture is produced by adding to the drilling mud with a density of from 1.3 to 1.8 kg/DM3with constant stirring urea-formaldehyde foam, having a density of 10-30 kg/m3in the amount of 10-25% by volume of the drilling sludge; cement in the amount of 10-20% of the volume of drilling wastes; mineral filler in the amount of 10-20% of the volume of drill cuttings. Mixing of cuttings and to palezieux components to obtain a homogeneous, rapidly growing mass produce with the help of an excavator due to the motion of the excavator bucket in the longitudinal and transverse directions.

From the patent of the Russian Federation No. 2399440-known formula for obtaining a building material, including drill cuttings, mineral Supplement, the accelerator, the drying and curing agent, characterized in that it contains as mineral supplements, loam, sand, Postanovlenie faction, as the accelerator is calcium chloride and/or sodium, as the desiccant is at least one of: peat, rock wool, slag wool, cellulose fibers, silica gel, penoizol as the hardener, cement and/or bitumen and extra - carboxymethylcellulose - CMC and/or polyvinylacetate - PVA and exhaust technological solution density of 1.08 is 1.86 t/m3and drilling waste water resulting from the drilling operations, in the following ratio, wt.%:

cuttings1,0-30,0
specified technological solutionfrom 1.0 to 40.0
the mineral Supplement0,9-45,0
specified dehumidifier1,0-38,0
CMC and/or PVA0,1-0,2
the specified accelerator1,0-2,0
cementfrom 1.0 to 22.0
bitumen1,0-5,0
these waste drilling waterrest

The closest analogue of the claimed invention is the construction material gerontology fortified, disclosed in the patent of the Russian Federation 2471737, including drill cuttings density from 1.3 to 1.8 kg/DM3the cement as the main binder in the amount of 4-12% by weight of the mixture, the desiccant - building plaster 2-4% by weight of the mixture, mineral filler - sand natural in the amount of 40-70% by weight of the mixture.

The task that sent the claimed invention is the extension of the range of road construction composite materials (DSCM) and nomenclature of soils suitable for strengthening (for example, one dimensional Sands with an acidic environment).

The technical result of the claimed invention are: saving of cement by 10-30% compared with the usual norm for reinforced soils, reducing consumption of imported stone materials, up to a total rejection of their application and replace with DSCM, HCDS (soils in kreplenie road construction), getting reinforced soil (UG) with the desired characteristics of strength, waterproof, cold resistance and deformation, the effective disposal of drilling waste, reducing costs and reclamation of sludge pits and landfills, improve the environment, the use of components in a mixture of drill cuttings, which is the waste drilling and thermal utilization of waste sludge (ash mixture). Drill cuttings, in and of itself is a waste, but when using it as a component DSCM eliminates migration activity of pollutants and waste acquires the class of secondary material.

The claimed technical result is achieved due to the fact that the used soil fortified road construction, characterized in that it is obtained from a mixture comprising, by wt.%: cement 5-15, waste thermal sludge utilization - solochek density of from 1.2 to 1.6 kg/DM330-40, mineral filler, 0-30, peat sorbent 2-4, cuttings density from 1.3 to 1.8 kg/DM3the rest of it.

Brief description of drawings

Fig. 1 is a General diagram of the processing of drill cuttings;

Fig. 2 - site processing of drill cuttings with getting technology HCDS;

Fig. 3 - the scheme of capacity for processing drill cuttings technology HCDS;

Fig. 4 - applications Grun is but a fortified road construction in the construction and repair of pads; where a is the waterproofing pads, B - repair pads with ground subsidence in the area of the wellhead, the strengthening of slopes of the banks, G - dumping Foundation pads;

Fig. 5 - use the soil fortified road construction by reclamation of sludge pits with a preliminary excavation of drill cuttings from the barn;

Fig. 6 - use of soil fortified road construction by reclamation of sludge pits without prior excavation of drill cuttings from the barn;

Fig. 7 - typical variant of the road embankment using soil fortified road construction; where D - fill road base, E - strengthening of the slopes of the roadway.

The implementation of the invention

Disposal of drill cuttings together with waste thermal sludge utilization, with the same technology and formulation of washing fluid relating to IV or III hazard class, with receipt of environmentally friendly materials, made by binding and neutralizing toxins in the monolithic structure of the consolidated material and the removal of their migratory activity. DSCM artificial material obtained by mixing career mixing plants, either in landfills or directly on the road (using cutters, excavators of autograder) drill cuttings together with ash mixtures with cement or other inorganic cementitious additives and active substances and sorbents with subsequent laying and compaction, in communicating to the optimum moisture content and responsible in the project or interim periods of the normalized indicators of quality in strength, frost resistance and environmental safety. Composition, structure, physical-mechanical characteristics and other properties, and applications, methods of preparation DSCM is a type of fortified soil or processed materials in accordance with GOST 23558-94. Used in the claimed compositions drilling sludge is a plastic (from semi-liquid to viscous consistency) pasty mass consists of particles drilling cuttings and waste drilling mud (ARR). In the composition of the solid phase slams are different degrees of dispersion (colloidal 5-10 mm) particles drilling and injecting washing fluid claypowders (bentonite, montmorillonite), as well as insoluble and soluble additives (calcium carbonate, barite, and others). The liquid phase BSH is formed by the discharge of a certain quantity of drilling mud and waste water when washing equipment.

Part of BSH includes particles of drilling cuttings and drilling fluid, the ratio may be different, for example, brown is the second sludge deposits OJSC "TNK-Nizhnevartovsk" contains, wt.%:

- cuttings - 55-75;

- drilling fluid exhaust (ARR) - 25-45.

This MOD includes the following components: sand in the amount of 3-4%, water in an amount 90-92% and colloidal phase low density of 5-6%, which includes the following chemicals: bentonite bentonite (for example, brand PMBA), drugs CMC (connection polyanionic cellulose), soda and caustic soda, chalk, barite, water-soluble high molecular polymer compound (polyacrylamide, polyacrylonitrile), salt (potassium chloride, sodium chloride) and other substances.

For processing used slams, having a density in the range of 1.3-1.8 kg/DM3and humidity in the range of 30-60%.

Used in the claimed compositions of the mixture of ash (SSS) are formed on the installations for thermal utilization (burning) of waste generated by oil and gas extraction (soil contaminated by oil and oil sludge cleaning of pipelines and tanks from oil and oil products and drill cuttings). SSS consist of ash component (particles of ash and slag smaller than 0,315 mm) and slag, including: slag sand - grain size from 0,315 up to 5 mm; the slag crushed stone grain size of more than 5 mm of Residual oil content in TSS not exceed 0.5%. In addition to the above in a mixture of sorbent-complexing agents, Sssimona be considered as a desiccant, in the amount of 30-40% by weight of the mixture, which are large-tonnage waste requiring disposal, promising to use because they have developed specific surface area and hydraulic binding properties (activity). These materials in combination with the main binder (cement) bind large quantities of water and impurities, making BSH in inert and durable composite material.

Used as the main binder in the composition DSCM cement provides strength, water resistance, in combination with a liquid binder (liquid glass) addresses the fluidity slams, gives the material strength properties, binds toxins and components ABOUT preventing migration of contaminants into the environment.

Used as a sorbent of organic complexing agents fibrous sorbent (dried pulverized peat, produced by THE 1392-005-48952916-2001) density of not more than 180 kg/m3eliminates migration activity of pollutants, will destroy the residual oil content.

In a preferred variant embodiment of the invention, the sorbent-complexing agents used environmentally friendly organic fibrous (peat) sorbent.

The use in the claimed mixture as a mineral filler more rasprostranennoi with a wider range of fractions of natural disperse non-cohesive soils - sand according to GOST 25100-95 reduces the cost DSCM. In accordance with table ± 10 GOST 25100-95 granulometric composition of natural sand (size and content of the grains) can be arbitrary, i.e., can be applied Sands from gravelistoe to dust. The basic mineral filler is the most common choice in oil and gas producing regions of Western Siberia fine sand and/or silt characteristics: particle size larger than 0.10 mm - not less than 75% for small or, respectively, less than 75% for silt. Moreover, the dosage of sand (0-30% by weight of the mixture) selected on the basis of grain-size composition and SB on the condition of obtaining the number of the plasticity of the mixture of about 7-12, i.e., the optimal particle size of the mixture corresponding to the light sandy to loam that are most conducive to strengthen the soil, including industrial cement. The volume of injected filler depends on the moisture content and density BS, for example, if the minimum density 1.3 kg/DM3maximum humidity BSH (70%) is the maximum amount of sand - 30% by weight of the mixture; at a maximum density of 1.8 kg/DM3and, accordingly, the minimum humidity (40%) flow rate of sand is 0-10% by weight of the mixture. Also the flow of sand is dependent on the strength and scope of the final product in the structures.

In savlon the second composition may use different grades of cement. The basic binder is Portland cement, slag Portland cement and Portland cement with mineral additives according to GOST 10178, sulfate and pozzolanic cements according to GOST 22266, as well as cements for building solutions according to GOST 25328 grades not lower than 400 for coatings and 300 for a reason.

To improve the properties and performance DSCM used improving additives, including as microagents are used:

- calcium chloride technical, sodium chloride, calcium nitrite (up to 2% by weight of the mixture), which accelerate the curing of the material and antifreeze agents are able to produce DSCM in the winter. The above microadditives are powder bulk substances that in the North it is preferable from the standpoint of their transportation and injection with stirring compositions.

To improve DSCM can be used and other microadditives, including supplied in liquid form (solutions, emulsions):

- organogenic-siloxanes (NGL 136-41, NGL 136-M, manufactured according to GOST 10843-76, THE 6-02-694-76) in an amount of up to 0.5% by weight mixes;

- liquid glass (sodium silicate) in an amount up to 1% by weight of mix. Data supplements increase the water resistance and water resistance, lower water absorption and permeability, which prevents suppose wymiana toxic components ABOUT from the composition;

- the ground not slaked lime, gypsum building (linking water, neutralizing waste).

DSCM, depending on the magnitude of the total specific effective activity of natural radionuclides (Aeff) contained in DSCM, processed materials, soils, used:

Andeffto 740 Bq/kg for the construction of roads and sites without restriction;

AeffSt. to 2800 740 Bq/kg for oilfield road construction outside the settlements and areas of prospective development.

Application DSCM for construction of road pavement and subgrade of roads, grounds and other facilities contributes to the improvement of ecological safety, reliability of structures, excludes components BSH and waste into the environment.

Thus, thanks to the invention has made possible the transformation of drill cuttings and waste thermal sludge utilization in an inert composite material, binding in its structure pollutants, preventing their migration in the environment.

The processing of drill cuttings includes the following stages (Fig. 1):

- accumulation of drilling sludge;

- adding and mixing the mixture by the excavator;

- the mixture is moved to the stack to complete the process of summer is to be placed;

- made material warehoused at the sites of temporary storage and transport to the dumping area objects.

For the production of DSCM, HCDS on-site wells:

- equipped Playground processing:

- imported materials (components): sand 4 cement 3, NGL 136-41 (or other) 2;

- capacity 1 imported cuttings (or removed from a barn);

- in drill cuttings added components (the latter may be any other additive);

- mixing of the components of the excavator until blended;

- excavation and piling.

In one variation of the embodiment of the invention is a method of processing drilling waste includes recycling of drilling waste to produce road-building composite material comprising drilling cuttings density from 1.3 to 1.8 kg/DM3the cement as the main binder in the amount of 5-15% by weight of the mixture, thermal utilization of waste sludge (solochek) a density of from 1.2 to 1.6 kg/DM3in the amount of 30-40% by weight of the mixture, mineral filler, and sorbent-complexing agents, where the sorbent-complexing agents used organic fibrous (peat) sorbent 2-4% by weight of the mixture.

In a preferred variant embodiment of the invention the components of the mixture are placed near the excavator the length of the removal of his arrows.

For drilling waste pick-aligned space dimensions not less than 20×20 m Area is divided into areas of accumulation and storage of materials, processing site, access roads, site storage of materials. Pets enlargement through the use of the secondary material. Capacity 1 for processing is set in the ground 7. Preferably the container has a volume of 40 m3and dimensions of 6.4×2,5×2,5 m NGL 2 is stored in metal barrels 0.2 m3. The cement is stored in bags MCR, sand - bulk height not exceeding 2 m, SSS - bulk height of not more than 2 m DSCM 6 is formed in bulk with a maximum height of 4 m (Fig. 2).

The upper edge of the tank should rise above the terrain at a height of not more than 0.5 m in order to avoid buckling capacity under pressure of the ground - side walls externally reinforced by logs. The upper edge of the tank is reinforced concrete beam or pipe serving as a bump stop 8 from the discharge of drilling waste (Fig. 3).

Posted on bogs Bush Foundation over time, "SAG" in the peat, wellheads are exposed.

To restore the design level can be agreed upon with the oil areas of well pad be removed by excavating the soil and to fill the recess of the HCDS.

After setting'll take the first ground levelled by a bulldozer, the space 8 is planned (Fig. 4).

During construction of well pads in areas with shallow groundwater table, water protection zones are waterproofing foundations.

As a waterproofing material commonly used polymer film that does not always provide the necessary degree of waterproofing due to its low mechanical strength.

More reliable sealing can be accomplished using the HCDS 9 with the addition of liquid glass to increase the waterproofing properties of the composite.

In water protection zones, it is advisable to carry out the isolation of HCDS 9 the bottom and sides of the layer of composite material of the polymer film (Fig. 4).

During the construction of wells permitted the use of HCDS 9 for filling the Foundation and strengthening of banks with the aim of saving the imported construction of the soil (Fig. 4).

The use of HCDS when reclaiming drilling mud pits produced by two main schemes - with a hollow drill cuttings from the body of the barn and processing of drill cuttings in the body of the barn.

When the hollow drill cuttings 13 of the barn, its processing is carried out on-site processing and received HCDS fits into the barn by the method of the thrust fault. This method is applicable for large barns, while the limit of the soil, a large level of occurrence of sludge. This is proizvoditsa slight reinforcement of the sludge khvorostyanoy lining 10, then HCDS 9 is applied with a bulldozer method thrust fault. Work is consistently around the perimeter of the barn. The formation of the next strip of ground 11 is made after setting the HCDS prepared strip serves as a platform for the work and in bulldozer. On the ground 11 is applied to the peat layer 12 (Fig. 5).

In the processing of drill cuttings 16 in the body of the barn (Fig. 6) is the arrangement of the dividing strip 14 for passage of the excavator; the distance between the dividing strips and the embankment should be no more than two lengths of the boom of the backhoe for grasping the whole volume of battleships during processing. Processing of drill cuttings produced along the dividing strip 14 and the dike on the length of the boom of the excavator. Backfill soil 11 is made after setting the HCDS. Ground is applied recultivation layer 16.

The construction of the structural layers of roads with the use of HCDS in the following main ways: by mixing on a specially prepared with waterproof DTL sites in the right-of-way of a highway using multipass milling (DS-74); the preparation of a mixture in gruntosmesitel installations (DS-50A, B and others).

Also is the strengthening of slopes of the roadway (Fig. 7) using 16 and gravel sand 17.

Example 1

Building material DSCM brand M0, indicator hardiness F25, includes, wt.%:

BSH, sample # 138
Portland cement M-40015
SSS14,5
Mineral30
filler
Dried2
crushed peat
Organogenic-siloxanes0,5

When you implement this composition obtained material with a compressive strength of 0.4 MPa, suitable for construction of load-bearing bases of the road surface, for example, on commercial road.

Example 2

Building material DSCM brand M20, record hardiness F15, includes, wt.%:

BSH, sample # 143
Portland cement M-40010
SSS34
Mineral10
filler
Dried2
crushed peat
Liquid glass1

When you implement this composition obtained material with a compressive strength of 0.2 MPa, suitable for the construction of additional layers (frost protect, etc.) bases of the road surface, for example, field roads, and durable device of banks.

Example 3

Building material DSCM brand M10 indicator hardiness F5, includes, wt.%:

BSH, sample # 158
Portland cement M-4006
SSS29
Mineral5
filler
Dried2
crushed peat

When you implement this composition obtained material with a compressive strength of 0.05 MPa, zgodny for the construction of earthworks, backfill and reclaim drilling mud pits.

Example 4

On site processing of imported materials, the beaker is placed cuttings, and adds the following components: 1 m3cuttings; 0.1 m3sand; 0.1 tons of cement and 0.4 kg NGL. The mixture is stirred for excavator Hitachi until a homogeneous mixture, and then produce the notch and stacking.

Example 5

On site processing of imported materials, the beaker is placed cuttings, in which the following components are added to 1 m3cuttings: 0.1 m3sand; 0.1 tons of cement and 0.2 m3penoizol. The mixture is stirred for excavator Hitachi until a homogeneous mixture, and then produce the notch and stacking.

Example 6

On site processing of imported materials, the beaker is placed cuttings, in which the following components are added to 1 m3cuttings: 0.1 m3sand; 0.1 tons of cement and 0.2 m3penoizol. The mixture is stirred for excavator Hitachi until a homogeneous mixture, and then produce the notch and stacking.

Example 7

On site processing of imported materials, the beaker is placed cuttings, in which you add components in the following ratio, wt.%:

Portland cement M-400
BSH, sample # 138
15
SSS14,5
Mineral30
filler
Dried2
crushed peat
Organogenic-siloxanes0,5

The mixture is stirred for excavator Hitachi until a homogeneous mixture, and then produce the notch and stacking.

Soil fortified road construction, characterized in that it is obtained from a mixture comprising, by wt.%: cement 5-15, waste thermal sludge utilization - solochek density of from 1.2 to 1.6 kg/DM330-40, mineral filler, 0-30, peat sorbent 2-4, cuttings density from 1.3 to 1.8 kg/DM3the rest of it.



 

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EFFECT: increased frost resistance of the materials.

1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to preparations used for increasing water resistance of concrete, namely to elaboration of novel concrete-colmating (imperforating concrete pores) composition. In basic version composition represents mixture of salts, formed by metals from the group: sodium, potassium, calcium, aluminium, and acids from the group: nitric, formic, sulfuric, carbonic, with the following ion ratio (ion weight in composition, g)/(100 g of composition): sodium 5.6-32, calcium 0.4-17.2, potassium 1.5-27.2, aluminium 0.5-7.6, nitrate 4.1-62.1, formiate 0.6-29.7, sulfate 10.3-54.7, carbonate 1.1-29.7, as well as complex-forming additives (such as, for instance, carbamide, nitryltriacetic acid, imino-N,N-diacetic-N-methylene phosphonic acid; glycin-N,N-di(methylene phosphonic) acid, iminodi(methylene phosphonic) acid; diaminopropanol- N,N,N',N'-tetraacetic acid; 2-hydroxypropylene diamine- N,N,N',N'-tetra(methylene phosphonic) acid; 2,3-dihydrobutylene-1,4-diamine- N,N,N',N'-tetra(methylene phosphonic) acid; 2,3-dihydroxybutylene-1,4-diamine- N,N,N',N'-tetraacetic acid; nitryl-tri(methylene phosphonic) acid; 1-hydroxyethylene diphosphonic acid; ethylenediamin- N,N,N',N'- tetra(methylene phosphonic) acid; ethylenediamine-N,N,N',N'- tetraacetic acid; in amount not more than 20% of colmating composition weight.

EFFECT: extension of arsenal of preparations, used to increase concrete water resistance.

5 cl, 3 tbl

FIELD: construction.

SUBSTANCE: in the method to manufacture wood concrete items with production of a base on their surface for plastering, providing for preparation and dosing of a hydraulic binder, ground cane stems, water, mixing of components, moulding of items with vibration, hardening, moulding with vibration is carried out so that cane stems cut into sections with length of 4-6 cm are located near the surface of the items, with one end staying in the mix, and with the other one - protruding outside and forming a base for application of plaster.

EFFECT: higher convenience of plaster application onto surface of items.

FIELD: construction.

SUBSTANCE: additive comprises the following components, wt %: microorganisms of Leuconostoc mesenteroides type cultivated on a synthetic nutrient medium 0.5-2.7; microquartz 97.3-99.5.

EFFECT: increased mobility of a construction mix and concrete strength.

2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to the industry of building materials and can be used in manufacturing products in civil and industrial construction, monolithic construction and for erection of special-purpose structures. The high-strength light concrete made from a concrete mixture contains portland cement, filler, a plasticiser, water, a mineral part consisting of microsilica with average particle size of 0.01-1 mcm, rock flour - a product of grinding quartz sand with specific surface area of 700-800 m2/kg and quartz sand with grain size of 0.16-0.63 mm, with the following ratio of components, wt %: portland cement 33.8-53.0, microsilica 4.77-13.8, rock flour 1.5-11.9, quartz sand 5.1…32.2 , microspheres 4.3-19.27, plasticiser 0.3-0.48, water - the balance.

EFFECT: obtaining concrete with high specific strength.

2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to method of manufacturing fast setting light-weight cementing composition with improved compressive strength for building products such as panels. Method of obtaining light-weight cementing mixture, which has improved compressive strength and resistance to water, includes mixing water, cementing reacting powder, alkali metal salt of citric acid as set accelerator and light-weight filling agent, where weight ratio of water to reacting powder constitutes approximately 0.17-0.35:1.0, reacting powder includes 75-100 wt % of sol dust, which contains at least 50 wt % of fly ash of class C and 0-25 wt % of hydraulic cement and/or gypsum, setting of cementing mixture being achieved within from 4 to 6 minutes of composition mixing without addition of set retarder. Invention also deals with composition for obtaining light-weight cement panel.

EFFECT: obtaining light-weight cementing mixture, which has improved compressive strength and stability.

10 cl, 9 dwg, 9 tbl

FIELD: construction.

SUBSTANCE: dry construction mix includes a binder, a mineral filler and modifying additives and additionally contains ground baked ceramics at the following ratio of mixture components, wt %: binder 30-45, ground baked ceramics 10-30, cellulose ether 0.1-0.5, redispersed powder 0.5-3.0, cellulose fibres 0.1-0.5, mineral filler (sand) - balance.

EFFECT: improved adhesion properties, expansion of raw base due to usage of baked ceramics, improved environment, lower prime cost.

4 cl

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