SE502842C2

SE502842C2 - Ground slat cover for concrete slabs

Info

Publication number: SE502842C2
Application number: SE9101885A
Authority: SE
Inventors: Erik Thelberg
Original assignee: Sundolitt Ab
Priority date: 1986-06-02
Filing date: 1991-06-18
Publication date: 1996-01-29
Also published as: SE9101885D0; SE9101885L

Abstract

To construct the cover, insulating bodies are positioned on the ground (1) so that intermediary spaces (4) are formed between them. Reinforcements (6) are placed in the intermediary spaces (4) before concrete is fed on to the bodies and in the intermediary spaces to form a slab (7) and beams (5). The heat insulation (3) forms distance pieces so that, between the ground and the concrete slab, there is a ventilated space.

Description

502 842 2 lägre driftskostnad. Vid betonggjutningen sjunker ej betongmassan ner i makadamen, d.v.s. att inget spill uppkommer. Cellplasten är av styvt material, vilket innebär att inget spill av betong sker och att bättre planhet av betongplattan möjliggöres att uppnås. 502 842 2 lower operating cost. During concrete casting, the concrete mass does not sink into the macadam, i.e. that no spillage occurs. The cellular plastic is made of rigid material, which means that no spillage of concrete takes place and that better flatness of the concrete slab is made possible to achieve.

Distansering av armeringen förenklas. Grundbalkar och pålplintar kan undvikas, schakt och tillkommande betong på grund av votning bortfaller, vilket medför enkel schaktning. Inga formarbeten behövs heller och rationella arbetsmetoder kan tillämpas.Distancing of the reinforcement is simplified. Foundation beams and pile plinths can be avoided, excavation and additional concrete due to voting are omitted, which results in easy excavation. No formwork is needed either and rational working methods can be applied.

Bjälklag kan tack vare uppfinningen utföras mycket lätt genom minskad betongmängd. Detta åstadkommes genom att tvär- snittet blir T-format, s.k. ribbdäck eller kupoldäck. Den minskade vikten ger även minskad armeringsmängd.Thanks to the invention, floors can be made very easily by reducing the amount of concrete. This is achieved by the cross-section becoming T-shaped, so-called ribbed tires or dome tires. The reduced weight also reduces the amount of reinforcement.

Fuktproblem från marken undvikes. Detta åstadkom- mes genom att det värmeisolerande materialet distanseras från marken, så att en ventilerad spalt erhålles. Tack vare denna kon- struktion kan det vanliga dräneringsskiktet slopas.Moisture problems from the ground are avoided. This is achieved by distancing the heat-insulating material from the ground, so that a ventilated gap is obtained. Thanks to this construction, the usual drainage layer can be eliminated.

I figurerna 1-4 visas olika tvärsektioner genom bjälklag I, III, IV, V, där värmeisoleringsmaterial 3 bildar sparkroppar och distansorgan mot marken l.Figures 1-4 show different cross-sections through floors I, III, IV, V, where thermal insulation material 3 forms savings bodies and spacers towards the ground 1.

Den bärande idén med uppfinningen är att värme- isoleringen 3 bildar dels en sparkropp, dels att den utnyttjas som distansorgan mot marken l för att erhålla ett ventilerat utrymme. _ Värmeisoleringsmaterialet 3 kan levereras skräd- darsytt till byggplatsen med valfri utformning. Olika typer av isoleringsmaterial kan kombineras, d.v.s. hoplimmas för att uppnå bättre funktion. Således kan det understa skiktet bestå av mineralull, som ej har någon kapillär stighöjd.The basic idea of the invention is that the thermal insulation 3 forms both a savings body and that it is used as a spacer against the ground 1 in order to obtain a ventilated space. _ The thermal insulation material 3 can be delivered tailor-made to the construction site with any design. Different types of insulation materials can be combined, i.e. glued together to achieve better function. Thus, the bottom layer may consist of mineral wool, which has no capillary rise.

Varje isoleringskropp 3 kan vara uppbyggd av samma material eller olika material för att uppnå önskad funktion.Each insulating body 3 can be built of the same material or different materials to achieve the desired function.

Nedan redovisas ett förfarande för åstadkommande av en grundplatta 7 på marken med mellan marken l och grundplat- tan 7 belägen värmeisolering. På marken 1, på ett dräneringslager 2 eller pà ett värmeisolerande och kapillärbrytande skikt 9, ut- lägger man spar- och isoleringskroppar 3 på visst avstånd, så att mellanrum 4 bildas mellan från underlaget 1; 2; 9 utskjutande kroppöverdelar. Armering 6 nedlägges i form av stänger och even- tuell bygelarmering i sagda mellanrum 4 före pàföring av betong 3 502 842, pà sagda isoleringskropp 3 och i sagda mellanrum 4 för bildande av betongplatta 7 och balk 5. Värmeisoleringen 3 är anordnad att dels bilda sparkropp för betong, dels nyttjas som distansorgan mot underlaget för att erhàlla ett ventilerat utrymme under grundplattan 7.Below is a procedure for producing a base plate 7 on the ground with thermal insulation located between the ground 1 and the base plate 7. On the ground 1, on a drainage layer 2 or on a heat-insulating and capillary-breaking layer 9, spar and insulation bodies 3 are laid out at a certain distance, so that gaps 4 are formed between from the substrate 1; 2; 9 protruding body tops. Reinforcement 6 is laid down in the form of bars and any shackle reinforcement in said gaps 4 before applying concrete 3 502 842, on said insulating body 3 and in said gaps 4 for forming concrete slab 7 and beam 5. The thermal insulation 3 is arranged to form a savings body. for concrete, partly used as a spacer against the substrate to obtain a ventilated space under the base plate 7.

Kroppen 3 kan fästas mot rörelse genom att stänger 8 slàs ner i marken 1, sàsom visas i fig. 1.The body 3 can be fastened against movement by lowering bars 8 into the ground 1, as shown in Fig. 1.

I fig. 2 visas hur dräneringslagret ersätts av ett värmeisolerande och kapillärbrytande skikt 9.Fig. 2 shows how the drainage layer is replaced by a heat-insulating and capillary-breaking layer 9.

I fig. 3 visas ett utförande för erhallande av ventilerat utrymme 10. Isolerings- och sparkropparna 3 placeras ut pà kapillärbrytande och värmeisolerande distanser ll, som även bildar balkbotten, varvid betong ej fàr kontakt med marken 1.Fig. 3 shows an embodiment for obtaining ventilated space 10. The insulating and saving bodies 3 are placed on capillary-breaking and heat-insulating spacers 11, which also form the beam bottom, whereby concrete does not come into contact with the ground 1.

I fig. 4 visas samma utförande, men där distan- serna ll utbildas med en i balkbotten uppstickande del 12, som ger läsning av kropparna 3.Fig. 4 shows the same embodiment, but where the distances ll are formed with a part 12 projecting into the beam bottom, which provides reading of the bodies 3.

Enligt uppfinningen utlägger man isolering, sà att värmeisolering erhàlles utmed den avsedda grundplattans hela yt- utsträckning och luftspalt erhàlles mellan underlaget och sagda isolering. Man kan utlägga isoleringskroppar 3 och man kan även làta isolering 3 uppbäras av frán underlaget uppstickande balk- bottenbildande delar 11, 12, som bestàr av isoleringsmaterial, varvid man kan làsa isoleringen 3 med fràn underlaget uppstickan- de delar 12 genom att dessa inskjuter mellan isoleringen 3.According to the invention, insulation is laid out so that thermal insulation is obtained along the entire surface extent of the intended base plate and air gap is obtained between the substrate and said insulation. Insulation bodies 3 can be laid out and insulation 3 can also be allowed to be supported by beam-bottom-forming parts 11, 12 projecting from the substrate, which consist of insulating material, whereby the insulation 3 can be locked with parts 12 protruding from the substrate by inserting them between the insulation. 3.

Markribbdäck kan sàledes byggas upp av cellplast- kroppar 3, i vilka kan finnas urfrästa spàr i en eller tvà rikt- ningar, som bildar själva balkformen. Undersidan kan vara sparad för dränering. Markribbdäcket kan byggas som ett korsarmerat ribbdäck eller som ett enkelspänt ribbdäck.Ground rib decks can thus be built up of cellular plastic bodies 3, in which grooves can be milled out in one or two directions, which form the beam shape itself. The underside can be saved for drainage. The ground ribbed tire can be built as a cross-reinforced ribbed tire or as a single-span ribbed tire.

Sparkropparnas höjd kan varieras och balkbredden kan väljas upp till valfri dimension.The height of the spare bodies can be varied and the beam width can be selected up to any dimension.

Claims

502 842 4 P a t e n t k r a v

A method for providing a concrete base plate (7) on the ground (1) with thermal insulation located between the ground (1) and the base plate (7), characterized in that thermal insulation bodies (3) are laid out, which consist of foam material on a substrate , so that in a manner known per se gaps (4) are formed laterally between said bodies (3) for receiving reinforcement (6) and concrete during subsequent casting of concrete slab (7) and beam (5) on top of each other between said bodies (3), so that a flexurally reinforced ground rib deck with a T-shaped cross section is obtained on top of an insulating plate formed by the thermal insulation bodies (3).

A method according to claim 1, characterized in that insulation (3, 11) is laid out so that thermal insulation is obtained along the entire surface extent of the intended base plate (7) and an air gap (10) is obtained between the substrate (1) and said insulation. (3, ll).

Method according to claim 2, characterized in that insulation (3) is allowed to be supported by beam-forming parts (11, 12) projecting from the substrate (1), which consist of insulating material.

Method according to Claim 3, characterized in that the insulation (3) is locked with said parts (12) projecting from the substrate, by inserting them between the insulation (3).

A method according to any one of claims 1-4, characterized in that said thermal insulation bodies (3) are laid on a drainage layer (2) or on a heat-insulating and capillary-breaking layer (9).

Method according to one of Claims 3 to 4, characterized in that said thermal insulation bodies (3) are laid on beam-bottom-forming parts (11, 12) projecting from the substrate. 502 842

Body for carrying out a method for providing a concrete base plate on the ground with thermal insulation located between the ground and the base plate according to claim 1, characterized in that disc-shaped heat-insulating insulating bodies (3), wholly or whose respective body upper part consists of foam material , can be applied to a base, in order to form a savings body for enclosing a concrete-produced base plate (7) and a beam (5). “

Body for carrying out a method for providing a concrete base plate on the ground with thermal insulation located between the ground and the base plate according to any one of claims 2-6, characterized in that disc-shaped heat-insulating insulating bodies (3), which in whole or in their respective body upper part consists of cellular plastic material, can be applied to a substrate as a spacer against the substrate in question to create a ventilated space under the concrete base plate (7).

A body according to claim 8, characterized in that an air gap (10) is formed below at the center of an insulating body.

Body according to one of Claims 7 to 9, characterized in that the body (3) consists entirely of foam material, or of various materials, such as foam material and e.g. mineral wool (9).