Part 1
Advantages of application of our companys road polymer technologies
The reasons to use Andor
Companys technologies
Saving time and money
High quality
Safety to environment
Sources of efficiency creation
Saving time and money
Each stage of road construction with the application of Andor Companys technologies from the first step to the very end of the process saves your time and money. In this technology application, the available soil becomes the material being used for the construction process. This creates the following advantages:
Local soil does not cost anything.
Reduction of expenses on the use of materials (crushed stone, sand), as well as their transportation.
No expenses on the works on clearing soil.
Reduction of the amount of excavation work.
Reduction of construction duration.
High qualityApplication of polymer stabilizer of soil allows to increase the durability
of road bed and reduces the expenses on the maintenance and repair
work of the motorways built with this technology application, as the
application of the soil stabilization technology eliminates the main
causes of road surface destruction, namely:
swelling of earth road bed body and its working layer caused by
water- and frost;
low moisture protection of road bed from soil waters;
weak soil road bed working layer;
silting of drained, frost-protecting layers of sand;
low stability to shifts of road clothing sand layers.
All these cause elimination results in increasing the term of road
surface overhaul service life.
Safety to environment
Road polymer is neither toxic nor inflammable. This makes the construction method with the application of Andor Companys technology absolutely safe for environment and people.
The technology aggregates the available materials in the same way as recycled materials (of available structure) on the construction site in the best possible way. No need to bring construction materials from remote areas. In this way, the road construction system with the application of Andor Companys innovative technologies saves natural resources.
Sources of efficiency
creation Saving materials
Saving man hours
Reduction of construction times
Utilization of local soil
Utilization of local production wastes
Saving road maintenance expenses
Services we offer Full technological solution:
Selection and calculation of required
structure
Aid in economic substantiation
Technology
Material (road polymer)
Support in technological process
Building roads in the cheapest, fastest and
most efficient way, with the application of the
latest advanced technologies.
Part 2
Technological process
STABILIZATION
What is stabilization
Process of improving the engineering properties of
natural soils ( such as load-bearing capacity,
resistance to one axis pressing, filtering properties
and others) by adding small amount of ingredients
How is stabilization achieved ?
* Stabilization is usually created directly on the site
* Sometimes it is created in stabilization center.
STABILIZATION Advantages of the method* Minimal use of chemical additives
* Efficient and fast construction of soil bedding and road bed
* Saving power
* Protection of environment
* Possibility to use local natural materials and salvage
* Reduction of sensitivity to moisture changes (swelling potential, stability to erosion and others)
* Technological process is researched in-depth
POLYMER What is polymer emulsion ?* Foam white water-soluble thick liquid, non-toxic
and neutral to environment
* Chemically polymeric emulsion produced on the basis of polymers and co-polymers of various compositions
Some physical properties
Boiling threshold 100 C
Specific weight @25 C 1.00 1.02
Viscosity @25 C 1,200 2,000 cps
Solubility in water Easily soluble
Acidity pH @25 C 11.0 12.5
POLYMER Polymer application
* Polymer mixture is used as soil stabilizer * Soil stabilization is achieved by means of changing
the natural properties of soil * Provides the opportunity of designing elasticity and
plasticity modules, as well as strength properties* Experience and latest research proves the
advantage of soil stabilization modifier over artificial soil application
POLYMER Flaws of conventional chemical
stabilizers * Cement, slaked and live lime, ashes and some other materials are
conventional chemical stabilizers having cementing properties.
Cementing additions are used have been used worldwide in the
road construction since the 1930s.
Their applications allows to improve significantly the engineering and
operational properties of soil materials, such as strength in
consolidation, resistance to pressure, resistance to shifting,
reduction of potential for swelling and slump.
* However, the soils stabilized by means of the application of traditional
chemical stabilizers, often have low resilient and elastic properties,
high water permeability, disposition to formation of cracks.
In particular, this is applied to the most common type of mixtures those of soil and cement.
POLYMER How does Polymer achieve soil
stabilization ?
* Elasticity module increases due to joining the soil particles covered with cement, with a variety of polymer chains
* During the process, the moisture-accumulating capacity is utilized
* Protects soil framework from the harmful effects of soil chemical components, such as sulfates.
* Prevents filtration and movement of capillary waters
* Reduces the effect of water migration which is one of the main causes of road surface wear
POLYMER
Polymer micro junctures
Soil particles Cement Soil particles
Chemically active elements
Polymer covering
POLYMERWater shortage in the process of conventional soil
stabilization
Mixture of soil and cement Cracks
PH- overcoming the problem of water shortage in soil
Thin polymer film No
cracks
POLYMER
Capillary action soaking
into the mixture of soil
and cement
Free water circulation Blocked water circulation
Soil-Cement SurfaceMicro pores
PC-SoilsSurface
Reduction of soaking into
PC-SOILS
POLYMER What is polymer-cement modified soil?Adding 5-10% of polymer (from the weight of cement) creates, at the
construction site, the mixture which, after its consolidation, and forms elastic plate with high module of plasticity and resiliency , which also has improved mechanical properties successfully bearing the road surface use regimes. PC-SOILS
Natural soilCement -
from dry soil weight
Polymer - %
from cement weight)PC-SOILS
Polymer-Cement Soil Used units Calculation Amount
Dry soil 1 cubic meter (consolidated) = 1 x 2,000 = 2,000 kilograms
Needed amount of cement 5% = 2,000 x 5/100 = 100 kilograms
Polymer 5% = 100 x 5/100 = 5 litres
CONCLUSIONS Polymer-cement stabilization (or PC-SOIL) is an efficient, well-
researched process of improving the engineering properties of
natural soils. In fact, modified soil is the mixture of local
natural material, polymer additive, cement and water, which,
after consolidation and gaining solidity, turns into solid
construction material.
Intensity of traffic, increase of cargo transportation,
introduction of heavy dump trucks bearing high axis loads,
raising requirements to the road surface quality makes the
application of the stabilization technology not only desirable,
but also necessary
This method fits better for pavement construction, road
surface restoration and recycling some industrial wastes.
CONCLUSIONS Logistics of technological process optimization, technological
regulations design, designing main engineering and technical
properties (load-bearing capacity, module of resiliency,
resistance to fatigue and erosion and so on), as well as the
economic effects, are calculated after performing full-scale
exploration works
If partial mechanization, as a simpler method which is easier
to access, fits more for the construction or restoration of road
bed in rural or remote areas, in the construction of big
highways, runways and similar structures, full process
mechanization is preferable where high degree of road
surface homogeneity is obtained due to more efficient mixing
process
Stages of calculating load-
bearing polymer-soil pad
START
Laboratory checks
Geotechnical prospecting
Soil sampling
Results
DESIGN **
CONSTRUCTION
FINISH
NO PEAT
PEAT
Required soil checks
Natural moisture
Granule measurement
Limits of plasticity and fluidity
Sulfate content
Organic material content
Maximal consolidation / optimal
moisture
(Modified Proctor Method)
Stability to erosion
Load-bearing capacity
** Design Method Used :
Equivalent layer method
(TA) - Pavement Design
END
Stabilization procedure of soil pad by
means of polymer-cement technology
Step Marking for cement dispersion in
accordance with the planned ratio
Step Dispersion of the required amount of
Portland cement
Step Rough mixing of cement with local soil
by means of gradersStep Thing mixing soil with cement
Stabilization procedure of soil pad by
means of polymer-cement technology
Step Dispersion of polymer emulsion Step Mixing soil and cement mixture with
polymer emulsion by means of grader
Step Consolidation of each layer up to
required densityStep Consolidation with pneumatic tire roller
and flatting by means of 2-rolling press road roller
Stabilization procedure of soil pad by
means of polymer-cement technology
Step Marking the area undergoing stabilization Step Loading cement-polymer mixture into stabilizer
machine
Step Repeat pass of RECYCLING MACHINEStep Mixing upper layer of the processed soil with
polymer-cement mixture at the intended depth
Stabilization procedure of soil pad by
means of polymer-cement technology
Step Consolidation of each layer up to
required density
Step Moistening the processed
surface within 3-7 days
Step Road bed after processing Step Conducting checks for the extent of
consolidation
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