Geotechnical aggregate GEO

Geotechnical aggregate GEO, produced by Renevis through recycling of CCP, is a product of usable qualities allowing on its use in process of reclamation, restoration of grounds, landfill or geotechnic. Its use in areas mentioned above is determined by the law regulations concerning the quality of earth. In particular the Regulation of Minister of Environment on earth and soil quality standards has to be applied.

Classification of GEO aggregates and requirements

Taking into consideration the quality, GEO aggregate can be divided into following classes:
GEO-1
GEO-2

Each class has been described in the table below.

 

Class of GEO

aggregate quality

 

No.

Properties

1

2

Testing methods

1

2

3

4

5

6

1.

Chemical composition

SiO2

AL3O3

Fe2O3

CaO

MgO

NaOH

K2O

SO3

 

Unit

%

%

%

%

%

%

%

%

 

 

40÷ 58

15÷31

4,5÷15

0,7÷10

0,2÷5

0,3÷3

0,3÷4

0,2÷2

 

 

38÷56

14÷31

4,5÷15

0,7÷7

0,2÷4

0,3÷2,5

0,3÷3,5

0.2÷3

 

Analyses with use of plasmatic spectrometer

2.

Concentration of heavy metals

Cr

Cd

Cu

Ni

Pb

Zn

 

 

ppm

ppm

ppm

ppm

ppm

ppm

 

 

150÷380

1÷10

150÷600

100÷300

50÷600

100÷1000

 

 

150÷350

1÷4

30÷300

30÷200

20÷150

80÷800

PE-EN ISO 11885-2001

3.

Loss on ignition (LOI)

(in temp. 9000C)

%

2÷9

5÷15

PN-77/PN-04528/02

4.

Concentration of elements with natural radioactivity

f1

f2

 

 

Bq/kg

Bq/kg

 

 

0,8÷1,2

<200

 

 

0,8÷1,0

<200

Regulation of Minister of Environment 03.12.2002 r. (Law Journal No. 220, pos. 1850)

5.

pH reaction

(pH w H2O)

9,00÷12,00

9,00÷12,00

PN-90/PN-04540.01

6.

Bulk density

g/cm3

1,10÷1,20

1,00÷1,10

PN-EN 1097-3:2000

7.

Grain class [mm]

< 0,063

0,063÷0,125

0,125÷0,25

0,25÷0,5

0,5÷1,0

1,0÷2.0

2,0÷4,0

4,0÷8,0

8,0÷16,0

>16,0

 

%

 

80÷95

5÷9

0÷1

0

0

0

0

0

0

0

 

 

18÷30

7÷10

22÷26

13÷18

7÷12

3÷6

5÷10

4÷8

1÷3

0

PN-EN 933-1:2000

Composition

Geotechnical aggregate GEO with its composition resembles mineral aggregates. It contains among others: aluminosilicate (SiO2, AL2O3), iron (Fe2O3), calcium (CaO), magnesium (MgO), potassium (K2O), natrium (Na2O).

Application

Main areas of geotechnical aggregate GEO application are:

  • reclamation, restoration of grounds, landfill,
  • fillings of deep and open cast mines,
  • stabilizing grounds,
  • building into lower layers of embankments,
  • improvement of grain size composition,
  • addition to the following products: RMC, aerated concrete blocks, artificial granulated aggregates, building elements, ceramics, etc.