WO1997017495A1 - Verfahren zur herstellung eines frostsicheren unterbaus - Google Patents
Verfahren zur herstellung eines frostsicheren unterbaus Download PDFInfo
- Publication number
- WO1997017495A1 WO1997017495A1 PCT/AT1996/000218 AT9600218W WO9717495A1 WO 1997017495 A1 WO1997017495 A1 WO 1997017495A1 AT 9600218 W AT9600218 W AT 9600218W WO 9717495 A1 WO9717495 A1 WO 9717495A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- eps
- layer
- lightweight concrete
- water
- concrete
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/08—Macromolecular compounds porous, e.g. expanded polystyrene beads or microballoons
-
- 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
- E01C3/00—Foundations for pavings
- E01C3/06—Methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration
Definitions
- the invention relates to a method for producing a frost-proof substructure for a
- the object of the invention is therefore to provide a method with which a reduction in the excavation volume can be achieved while maintaining the frost protection effect of the substructure.
- this is achieved in that a layer of lightweight concrete is applied between the floor covering and the frost-proof substructure layer.
- the EPS lightweight concrete takes on the function of
- Polystyrene foam particles are added.
- Thermal insulation values are made from an easily recoverable material
- Raw material can be produced.
- the polystyrene foam particles can be subjected to a heat treatment prior to admixing, during which the particles are melted on their surface, so that they vitrify on cooling.
- Light concrete solid aggregates such as expanded clay, blast furnace slag, hut or natural pumice,
- Another feature of the invention may be that the proportion of the fixed
- Aggregates is less than 50 percent by volume.
- the values of the EPS lightweight concrete are comparatively high.
- the proportion of solid additives can be 5 to 30
- the proportion of solid additives can be 5 to 20 percent by volume, which area has proven to be extremely advantageous for use in road construction.
- a load distribution layer may be applied to the floor covering.
- This load distribution layer takes over the load distribution of point or rolling loads acting on the floor covering.
- Another object of the invention is to provide a method with which a frost-proof
- Substructure layer can be produced on site without much mixing effort.
- the cement portion becomes hard in a short time due to the setting-accelerating effect of the water glass and forms a cement stone shell around the individual EPS particles. As a result, the user only needs the pre-mixed and bagged material
- cement powder further cement powder is added and that afterwards solid aggregates such as expanded clay, blast furnace slag, hut or natural pumice, brick chippings, recycled concrete or the like and mixtures of these are added.
- the amount of cement powder remaining loose after the coating process can be adjusted so that it acts as a binder for the solid additives as soon as enough water is added.
- Lightweight concrete e.g. in the form of milling chips.
- the strength of the lightweight EPS concrete can be increased significantly.
- Polystyrene foam particles, the expanded clay particles and the EPS lightweight concrete milling chips are each 1/3.
- Light concrete layer a liquid setting accelerator, preferably soda or
- Potash water glass or mixtures of these are sprayed with water onto the lightweight concrete layer or injected into it.
- the lightweight concrete layer is mixed and applied with a lack of water, and that the setting accelerator is sprayed or injected with the missing water content.
- the lightweight concrete substructure layer can be loaded to such an extent after a short time that the floor covering can be applied, which results in a considerable gain in time compared to conventional curing times.
- Another object of the invention can be to provide a method with which a ready-to-use mixture for producing a frost-proof substructure can be produced with little expenditure of time and material.
- Condition can be transported and then processed with the addition of water to lightweight concrete.
- frost protection layer instead of e.g. about 75 cm layer thickness only e.g. 25 cm layer thickness, needs to have if thermal insulation lightweight concrete like
- Prottelith polystyrene concrete or similar, e.g. Mixtures of EPS particles with a grain size of 0 to 8 mm and above (even up to 25 mm grain size) and cement paste, for example with a density
- the lightweight EPS concrete which can also contain heat-treated EPS particles that have been hardened before being mixed in by glazing the grain surface, takes on the function of frost protection and drainage. Heat-treated EPS grains absorb practically no water and are therefore also ideally suited as additives for the purposes according to the invention.
- EPS lightweight concrete layer e.g. B. Bitukies or Kantkorn
- a process can be selected which, according to the invention, brings extraordinary advantages by adding firmer aggregates such as fired expanded clay to the EPS lightweight concrete (eg Leca, Poroton, Liapor) and / or blast furnace slag and / or hut or natural pumice.
- firmer aggregates such as fired expanded clay
- the EPS lightweight concrete eg Leca, Poroton, Liapor
- brick chips, recycled concrete, or the like can be mixed with EPS lightweight concrete. Mixtures with expanded clay particles, brick chips, recycled concrete, etc. are also useful as an additive to EPS lightweight concrete.
- Compressive strengths of 0.5 to 4.5 N / mm 9 ' 1 ie 5 kg / cm 9 ⁇ to 45 kg / cm 9 ⁇
- Compressive strengths of 0.5 to 4.5 N / mm 9 ' 1 ie 5 kg / cm 9 ⁇ to 45 kg / cm 9 ⁇
- Compressive strengths of 0.5 to 4.5 N / mm 9 ' 1 ie 5 kg / cm 9 ⁇ to 45 kg / cm 9 ⁇
- Compressive strengths of 0.5 to 4.5 N / mm 9 ' 1 (ie 5 kg / cm 9 ⁇ to 45 kg / cm 9 ⁇ ) can be achieved, and even higher strengths, which are fully sufficient for the usual purposes. Based on these high strengths, there is no such pronounced formation of ruts as has become known from unbound road substructures.
- the EPS expanded clay concrete is not brittle in the solid state, and the freshly installed mass is also slightly viscous, so that, for example, paving stones or the like. can be easily pushed
- the above-mentioned additives such as EPS particles, also previously coated with a cement paste (previously with water glass and possibly water-moistened EPS particles, which are mixed with loose cement powder), which then becomes a cement stone skin are, or expanded clay particles or pumice particles, brick chips, etc., and mixed with the required amount of loose cement powder for such road, path, pavement, stone slab substructures (except the mixing water) is filled into containers (sacks), and so that The user is offered the opportunity to find a perfect material, whereby he only needs to add the water required (mixing water) in the specified amount.
- EPS particles also previously coated with a cement paste (previously with water glass and possibly water-moistened EPS particles, which are mixed with loose cement powder), which then becomes a cement stone skin are, or expanded clay particles or pumice particles, brick chips, etc., and mixed with the required amount of loose cement powder for such road, path, pavement, stone slab substructures (except the mixing water) is filled into containers (sacks), and
- EPS material e.g. freshly foamed polystyrene material - grain size foamed 1 to 15 mm or larger - can be moistened in a mixer with soda water glass or potassium water glass (or dilutions of these agents with water) (e.g. 15 liters of water glass with 2 liters of water or more) , and then mixed with cement powder (e.g. 50 to 150 kg cement or 20 to 60 kg cement).
- cement powder e.g. 50 to 150 kg cement or 20 to 60 kg cement.
- the cement portion becomes hard in a very short time due to the accelerating effect of the sodium silicate or potassium silicate. This can be done within seconds or a few minutes.
- the individual EPS particles are suddenly covered in a cement stone shell in the mixer. Any excess cement powder remains loose in the mixing container.
- the user simply needs to add more water in the correct amount to the dry sack content that has been emptied into a mixer - and the EPS lightweight concrete is ready.
- Such ready-mix products can thus be produced in the simplest way in one and the same mixing process. It is only necessary to ensure that sufficient non-wetted, loose cement powder is added to the mixing container when the first coating process in the mixing trough has been completed.
- EPS lightweight concrete or EPS expanded clay lightweight concrete can also be produced on site if the required amount of mixing water is added and mixed.
- Another method according to the invention is that only the freshly installed or heaped-up EPS lightweight concrete mixture, which also contains expanded clay particles and / or the like as described above, can be hardened more quickly by subsequently, i.e. sprayed onto the surface of the mixture immediately after the mixture has been installed, or even later.
- This method can also be used with such mixtures of lightweight EPS concrete that contain no expanded clay components. It is advantageous if the built-in mass is mixed beforehand with a minimum of mixing water. This can go so far that even less mixing water than would be required with a W / Z factor below 0.33 is added.
- the missing proportion of mixing water can only be added together with an accelerating liquid.
- the area of the freshly installed lightweight concrete substructure which serves as a load-bearing base layer, can be loaded within a few minutes or hours as far as this is for the mechanical stresses in the course of the application of paving, stone slab coverings or Road surface wear layers are necessary.
- Sodium water glass or potash water glass or mixtures of such water glass with water can advantageously be used as the setting accelerator.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU74853/96A AU7485396A (en) | 1995-11-08 | 1996-11-08 | Method of producing a frost-resistant foundation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA1839/95 | 1995-11-08 | ||
AT183995 | 1995-11-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997017495A1 true WO1997017495A1 (de) | 1997-05-15 |
Family
ID=3522142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AT1996/000218 WO1997017495A1 (de) | 1995-11-08 | 1996-11-08 | Verfahren zur herstellung eines frostsicheren unterbaus |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU7485396A (de) |
WO (1) | WO1997017495A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT509521A3 (de) * | 2010-03-10 | 2012-01-15 | Markus Ing Stracke | Verfahren zur herstellung von leichtbeton - elementen |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH118910A (de) * | 1926-06-11 | 1927-07-01 | Bruno Weber | Verfahren zur Herstellung von harten Belägen für Wege und Plätze. |
DE1658436A1 (de) * | 1967-07-27 | 1971-04-15 | Basf Ag | Frostschutzschicht im Unterbau von Fahrbahnen |
DE2931505A1 (de) * | 1978-08-03 | 1980-02-14 | Ebenseer Betonwerke Gmbh | Einrichtung zur abgabe von formbarem, spaeter erhaertendem material, wie beton, aus einem vorratsbehaelter |
DE3720286A1 (de) * | 1986-06-18 | 1988-02-11 | Markus Ing Stracke | Leichtbetone mit aussergewoehnlichen physikalischen eigenschaften |
WO1993001142A2 (de) * | 1991-07-03 | 1993-01-21 | Markus Stracke | Verfahren zur herstellung von leichten betonzuschlagstoffen |
-
1996
- 1996-11-08 WO PCT/AT1996/000218 patent/WO1997017495A1/de active Application Filing
- 1996-11-08 AU AU74853/96A patent/AU7485396A/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH118910A (de) * | 1926-06-11 | 1927-07-01 | Bruno Weber | Verfahren zur Herstellung von harten Belägen für Wege und Plätze. |
DE1658436A1 (de) * | 1967-07-27 | 1971-04-15 | Basf Ag | Frostschutzschicht im Unterbau von Fahrbahnen |
DE2931505A1 (de) * | 1978-08-03 | 1980-02-14 | Ebenseer Betonwerke Gmbh | Einrichtung zur abgabe von formbarem, spaeter erhaertendem material, wie beton, aus einem vorratsbehaelter |
DE3720286A1 (de) * | 1986-06-18 | 1988-02-11 | Markus Ing Stracke | Leichtbetone mit aussergewoehnlichen physikalischen eigenschaften |
WO1993001142A2 (de) * | 1991-07-03 | 1993-01-21 | Markus Stracke | Verfahren zur herstellung von leichten betonzuschlagstoffen |
Non-Patent Citations (1)
Title |
---|
BAUM: "Styropor als Zuschlagstoff für Mörtel und Beton", BETONWERK + FERTIGTEIL TECHNIK, vol. 39, no. 4, April 1973 (1973-04-01), WIESBADEN DE, pages 274 - 277, XP002026110 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT509521A3 (de) * | 2010-03-10 | 2012-01-15 | Markus Ing Stracke | Verfahren zur herstellung von leichtbeton - elementen |
Also Published As
Publication number | Publication date |
---|---|
AU7485396A (en) | 1997-05-29 |
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