EP0864693A2 - Soil profile for sport pitches - Google Patents
Soil profile for sport pitches Download PDFInfo
- Publication number
- EP0864693A2 EP0864693A2 EP98200756A EP98200756A EP0864693A2 EP 0864693 A2 EP0864693 A2 EP 0864693A2 EP 98200756 A EP98200756 A EP 98200756A EP 98200756 A EP98200756 A EP 98200756A EP 0864693 A2 EP0864693 A2 EP 0864693A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- ground surface
- base
- layers
- intermediate layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C13/00—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds
- E01C13/06—Pavings made in situ, e.g. for sand grounds, clay courts E01C13/003
Definitions
- the invention relates to a ground surface for a sport pitch arranged on a base, comprising a top layer and at least one intermediate layer arranged between the base and the top layer.
- the object of the present invention is to provide such a ground surface which is lighter.
- a lighter ground surface is desirable, for instance in the case of sport pitches which are placed in a movable tray.
- a lighter ground surface can also be important in other applications, for instance in the case of a base designed only for a light load.
- the intermediate layer comprises fired clay granules.
- the clay granules moreover provide a certain measure of mechanical stabilization and a reduction in the height of the whole ground surface is obtained.
- top layer can be arranged, such as gravel or plastic or combinations thereof.
- a stabilization layer is arranged between the top layer and the intermediate layer. This stabilization layer results in a further improvement of the mechanical stabilization.
- a drainage layer is arranged between the intermediate layer and the base. This results in an effective drainage, wherein the water management properties of the layer of fired clay granules shows to best effect.
- the method of claim 7 results in a simple method requiring few operations; pre-mixing of large quantities of materials is hereby avoided.
- the method of claim 8 results in an easy manner of obtaining a profile structure without great discontinuities in the granule size.
- layer soil/lava (1:1 w%) 80 mm mixed layer soil/lava/Argex 40 mm interm.
- a layer of gravel with a thickness of 50 mm is initially arranged on the base, which is formed for instance by a concrete, plastic or steel, water-impermeable tray or plate.
- This layer serves as drainage layer.
- This layer provides drainage to a drainage system not forming part of the invention in the form of for instance drainage pipes or holes in the tray.
- a layer of fired clay granules is subsequently arranged with a thickness of 40 mm. This layer serves to improve the water management in the profile.
- a mixed layer is then arranged with a thickness of 40 mm.
- This layer is preferably arranged by first arranging a layer of clay granules of 60 mm thickness, arranging hereon an intermediate layer of 20 mm and mixing this with the upper 20 mm of the underlying layer of clay granules, for instance with a tilling implement.
- the intermediate layer is formed by a mixture of soil and clay granules in equal volume parts.
- An unadulterated intermediate layer is then arranged of the mixture of soil and clay granules.
- Laid thereon is another mixed layer of the intermediate layer and a stabilization layer of lava and soil.
- This mixed layer is also made by arranging the intermediate layer in a thickness of 30 mm, subsequently arranging the stabilization layer in a thickness of 20 mm and then mixing the upper 20 mm of the intermediate layer with the stabilization layer.
- An unadulterated stabilization layer as a mixture of soil and lava in equal volume parts is subsequently arranged with a thickness of 80 mm.
- the thus resulting profile is covered with a top layer of soil with a thickness of 120 mm on which the grass is sown.
- the thickness of the layers can vary without deviating from the invention; it is thus particularly possible to reduce the thickness of the layers in order to reduce the mass and height of the profile. It is for instance possible to increase the height of the separate layers by 10, 20 or 30 mm or reduce it by 10, 20 or 30 mm.
- Additional layers can moreover be added or layers can be omitted. It is furthermore possible to alter the composition or the mixing ratio of the layers; what is essential is that the function of the most important layers is retained.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- Cultivation Of Plants (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to a ground surface for a
sports pitch for arranging on a base, comprising a top
layer and at least one intermediate layer arranged between
the base and the top layer, wherein the intermediate
layer comprises fired clay granules.
With such clay granules, which are also known under
the name Argex, a considerable weight saving is obtained,
while further good properties for the water management
are retained.
The clay granules moreover provide a certain measure
of mechanical stabilization and a reduction in the height
of the whole ground surface is obtained.
Description
The invention relates to a ground surface for a
sport pitch arranged on a base, comprising a top layer
and at least one intermediate layer arranged between the
base and the top layer.
Such ground surfaces are generally known.
Such ground surfaces are heavy.
The object of the present invention is to
provide such a ground surface which is lighter.
A lighter ground surface is desirable, for
instance in the case of sport pitches which are placed in
a movable tray. A lighter ground surface can also be
important in other applications, for instance in the case
of a base designed only for a light load.
This object is achieved in that the
intermediate layer comprises fired clay granules.
With such clay granules, which are also known
under the name Argex, a considerable weight saving is
obtained, while further good properties for the water
management are retained.
The clay granules moreover provide a certain
measure of mechanical stabilization and a reduction in
the height of the whole ground surface is obtained.
It is noted herein that it is generally
intended to sow the ground surface with a crop such as
grass or cover it with turf; other crops are in no way
excluded. Furthermore, another top layer can be arranged,
such as gravel or plastic or combinations thereof.
According to a preferred embodiment a
stabilization layer is arranged between the top layer and
the intermediate layer. This stabilization layer results
in a further improvement of the mechanical stabilization.
According to another preferred embodiment a
drainage layer is arranged between the intermediate layer
and the base. This results in an effective drainage,
wherein the water management properties of the layer of
fired clay granules shows to best effect.
It is pointed out here that the hygroscopic
properties of the clay granules are of the greatest
importance for the water management properties.
The measures according to claim 4 also result
in an improvement of these effects.
According to the measures of claims 5 and 6, a
gradual transition of pore size, and thereby of water-retaining
capacity, is obtained. Discontinuities and the
problems associated therewith of drying-out or an excess
of water in discontinuous layers are hereby avoided.
The method of claim 7 results in a simple
method requiring few operations; pre-mixing of large
quantities of materials is hereby avoided.
The method of claim 8 results in an easy manner
of obtaining a profile structure without great
discontinuities in the granule size.
The invention will be elucidated hereinbelow
with reference to the accompanying table which shows an
example of a profile structure according to the
invention.
| top layer | soil | 120 mm |
| stab. layer | soil/lava (1:1 w%) | 80 mm |
| mixed layer | soil/lava/Argex | 40 mm |
| interm. layer | soil/Argex (1:1 vol%) | 10 mm |
| mixed layer | soil/Argex/Argex | 40 mm |
| Argex layer | Argex | 40 mm |
| drainage layer | gravel | 50 mm |
A layer of gravel with a thickness of 50 mm is
initially arranged on the base, which is formed for
instance by a concrete, plastic or steel, water-impermeable
tray or plate. This layer serves as drainage layer.
This layer provides drainage to a drainage system not
forming part of the invention in the form of for instance
drainage pipes or holes in the tray.
A layer of fired clay granules is subsequently
arranged with a thickness of 40 mm. This layer serves to
improve the water management in the profile.
A mixed layer is then arranged with a thickness
of 40 mm. This layer is preferably arranged by first
arranging a layer of clay granules of 60 mm thickness,
arranging hereon an intermediate layer of 20 mm and
mixing this with the upper 20 mm of the underlying layer
of clay granules, for instance with a tilling implement.
The intermediate layer is formed by a mixture
of soil and clay granules in equal volume parts.
An unadulterated intermediate layer is then
arranged of the mixture of soil and clay granules.
Laid thereon is another mixed layer of the
intermediate layer and a stabilization layer of lava and
soil. This mixed layer is also made by arranging the
intermediate layer in a thickness of 30 mm, subsequently
arranging the stabilization layer in a thickness of 20 mm
and then mixing the upper 20 mm of the intermediate layer
with the stabilization layer.
An unadulterated stabilization layer as a
mixture of soil and lava in equal volume parts is
subsequently arranged with a thickness of 80 mm.
The thus resulting profile is covered with a
top layer of soil with a thickness of 120 mm on which the
grass is sown.
It will be apparent that the thickness of the
layers can vary without deviating from the invention; it
is thus particularly possible to reduce the thickness of
the layers in order to reduce the mass and height of the
profile. It is for instance possible to increase the
height of the separate layers by 10, 20 or 30 mm or
reduce it by 10, 20 or 30 mm.
Additional layers can moreover be added or
layers can be omitted. It is furthermore possible to
alter the composition or the mixing ratio of the layers;
what is essential is that the function of the most
important layers is retained.
Claims (8)
- Ground surface for a sports pitch for arranging on a base, comprising a top layer and at least one intermediate layer arranged between the base and the top layer, characterized in that the intermediate layer comprises fired clay granules.
- Ground surface for a sports pitch as claimed in claim 1, characterized in that a stabilization layer is arranged between the top layer and the intermediate layer.
- Ground surface for a sports pitch as claimed in claim 1 or 2, characterized in that a drainage layer is arranged between the intermediate layer and the base.
- Ground surface as claimed in claim 1, 2 or 3, characterized in that a layer formed substantially by fired clay granules is arranged between the intermediate layer and the drainage layer.
- Ground surface as claimed in any of the foregoing claims, characterized in that at least some of the layers are mutually separated by a dividing layer which is formed by a mixture of the layers between which the dividing layer forms the separation.
- Ground surface as claimed in any of the foregoing claims, characterized in that the difference between the average granule size of the constituents of mutually adjacent layers is smaller than the difference between the average granule size of layers separated by a dividing layer.
- Method for arranging a ground surface on a base, comprising of successively arranging the layers, characterized in that after arranging a layer a part of a following layer is arranged and the arranged part is subsequently mixed with a part of the already arranged layer.
- Method as claimed in claim 7, characterized in that the thickness of the arranged part of the following layer is the same as that of the part of the previous layer which is mixed therewith.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL1005481 | 1997-03-10 | ||
| NL1005481 | 1997-03-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0864693A2 true EP0864693A2 (en) | 1998-09-16 |
| EP0864693A3 EP0864693A3 (en) | 1999-05-06 |
Family
ID=19764563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98200756A Withdrawn EP0864693A3 (en) | 1997-03-10 | 1998-03-10 | Soil profile for sport pitches |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP0864693A3 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2837984A (en) * | 1956-01-09 | 1958-06-10 | Donald D Klotz | Limestone type tennis court |
| GB2001512A (en) * | 1977-06-22 | 1979-02-07 | Blank N | Layer composition for underground-irrigated and drained sports and athletics grounds |
| US4448566A (en) * | 1982-11-12 | 1984-05-15 | Mobil Oil Corporation | Method of making a load bearing surface using phosphogypsum and flyash |
| US4492728A (en) * | 1982-02-19 | 1985-01-08 | Pierre Zurkinden | Sports ground covering with expanded clay particles |
| EP0165895A1 (en) * | 1984-05-21 | 1985-12-27 | Albert Fatio | Surfacing for sports grounds |
-
1998
- 1998-03-10 EP EP98200756A patent/EP0864693A3/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2837984A (en) * | 1956-01-09 | 1958-06-10 | Donald D Klotz | Limestone type tennis court |
| GB2001512A (en) * | 1977-06-22 | 1979-02-07 | Blank N | Layer composition for underground-irrigated and drained sports and athletics grounds |
| US4492728A (en) * | 1982-02-19 | 1985-01-08 | Pierre Zurkinden | Sports ground covering with expanded clay particles |
| US4448566A (en) * | 1982-11-12 | 1984-05-15 | Mobil Oil Corporation | Method of making a load bearing surface using phosphogypsum and flyash |
| EP0165895A1 (en) * | 1984-05-21 | 1985-12-27 | Albert Fatio | Surfacing for sports grounds |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0864693A3 (en) | 1999-05-06 |
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Inventor name: CEELEN, WOUTERUS ANTONIUS MARIA Inventor name: DE HEER, ROBERT MEEUWIS |
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| 18D | Application deemed to be withdrawn |
Effective date: 20040129 |