Soil solidification with EvoCrete®

EvoCrete® on a Tyssen Krupp construction site in Brazil
EvoCrete® on a Tyssen Krupp construction site in Brazil

EvoCrete® ST is a soil and cement modifier for the construction of base / bearing layers made by the solidification of natural soil, recycled old base layers made out of aggregates, crushed concrete waste and crushed recycled roads – including asphalt pavement.

Traditional

Graphic without EvoCrete®

EvoCrete®

Graphic with EvoCrete®

High Road

Traditional

Graphic without EvoCrete®

EvoCrete®

Graphic with EvoCrete®

Secondary Road

Traditional

Graphic without EvoCrete®

EvoCrete®

Graphic with EvoCrete®

Foundations

Traditional

Graphic without EvoCrete®

EvoCrete®

Graphic with EvoCrete®

Airplane runways

color for soil

Soil

color for EvoCrete

EvoCrete®

color for construction material

Construction Material

color for asphalt carpet

Asphalt carpet

color for concrete

Concrete

color for sand

Sand

EvoCrete® ST is a soil and cement modifier for the construction of base / bearing layers made by the solidification of natural soil, recycled old base layers made out of aggregates, crushed concrete waste and crushed recycled roads – including asphalt pavement.

The application of EvoCrete® ST eliminates all traditional base / bearing layer technologies for road and infrastructure projects. It´s not necessary to excavate soil and construct a frost-thaw-resistant road base by the use of aggregates. The modification of the natural soil and cement hydration process during the solidification procedure produces a base / bearing layer, with an extraordinary boosted bearing and load capacity. Also an extremely intensified frost-thaw-resistance and water impermeability are results of the EvoCrete® monitored solidification. The following slide compares different examples of foundations and the thickness of the base / bearing layers.


Procedure steps

Soil solidification with EvoCrete® - Procedure step 1

Step 1 - The old asphalt

Details

The old asphalt

  • Milling of the old asphalt layers
  • Up to 10 cm of the old asphalt material can be mixed together with the cement-InfraCrete-mixture
  • Cracking of the old layer material
  • Big stones were brought to the surface
  • Milling of the mixed layer material with the stone crusher to a grain size less than 50 mm
Soil solidification with EvoCrete® - Procedure step 2

Step 2 - Surface preparations

Details

Preparation of surfaces

  • Secure trafficability for construction equipment
  • Reduce water content of soil, if required
  • Exchange soil, if required
  • Pre-leveling/pre-compaction of rough grade level
  • Obstruction-free trafficability of the area
  • Marking/pegging of stabilization area
  • Safeguarding of subterranean service pipes
Soil solidification with EvoCrete® - Procedure step 3

Step 3 - Cement spreading

Details

Spreading of cement

  • Qualification test for specification of cement/additive mixture
  • Production of cement
  • Preparation and use of suitable spreading vehicle
  • Construction site logistics for onschedule delivery of spreading vehicle
  • Supervision of spreading procedure
Soil solidification with EvoCrete® - Procedure step 4

Step 4 - Cement mixing

Details

Mixing of cement

  • Mixing of cement/additive mixture in required strength using soil stabilizer in the soil
  • In the case of milling depths required less than 50 cm, the soil is dug away, stored intermediary, mixed with cement and reused
Soil solidification with EvoCrete® - Procedure step 5

Step 5 - Surface watering

Details

Watering the surface

  • Irrigating the base layer (evaporation protection) using an irrigation unit
  • Continual adding of water without interrupting the milling work
  • Filling procedure using vacuum tanker
Soil solidification with EvoCrete® - Procedure step 6

Step 6 - Surface Levelling

Details

Levelling of the surface

  • On-site creation of precise grade level
  • Post-profiling with grader (laser controlled) if necessary
Soil solidification with EvoCrete® - Procedure step 7

Step 7 - Surface compression

Details

Compression of the surface

  • Dynamic and/or static compression on average 100% DPR using suitable equipment
  • Compression of precise grade level using smooth drum roller on average 100% DPR using suitable equipment
Soil solidification with EvoCrete® - Procedure step 8

Step 8 - Quality assurance

Details

Quality assurance

  • Geotechnical support using static plate tests according to DIN 18134 and using dynamic plate tests as well as falling weight equipment
  • Removal of drilling cores
  • Compression strength tests, etc.

Product advantages

Money saving with EvoCrete®

Money saving

  • Reduction of costs for earth excavation, transport and landfill sites
  • Reduction of purchases of materials for base layer and anti-frost layer
  • Reduction of supplies of filling materials
  • Reduction of paving, repairing and maintenance costs
  • No anti-capillary layers needed
  • Immobilization of hazardous materials without disposal and land fill charges
Time saving with EvoCrete®

Time saving

  • Reduction of time expenditure for earth excavation
  • Reduction of transports needed to landfill sites
  • Reduction of deliveries of materials for base layer and anti-frost layer
  • Reduction of supplies of filling materials
  • Possibility to avoid depth foundations (after prior static inspection and if foundation conditions are favorable)
  • Reduction of settlement periods required
  • Stabilization and immobilization possible in one procedure

Product properties

Processing and result with EvoCrete®

Processing and result

  • High load and bearing capacity
  • Very resistant and durable
  • Reduced formation of cracks
  • Reduction of settlements
  • Impermeable, leak-proof surfaces
  • Acid-resistant, salt resistant
  • Processing possible up to -6° C and under water
  • Can be used for virtually any soil
  • Immobilization of hazardous substances
  • Favorable alternative to concrete technology
Ecology with EvoCrete®

Ecology

  • Purely mineral components
  • Completely recyclable
  • Use of materials available on-site
  • Lower strain on the environment as a result of considerably reduced transport
  • Natural surfaces – no periods required for settlement
  • As a result of building time reduction, reduction of building traffic and impact on general traffic (diversions, queues, etc.)
  • Groundwater protection
  • Reduction of CO2 emission