DK157767B

DK157767B - Road consolidation and method of producing the same

Info

Publication number: DK157767B
Application number: DK410687A
Authority: DK
Inventors: Hans Erik Joergensen; Ole Lykke-Rasmussen; Ole Poulsen; Hans Erik Poulsen
Original assignee: Phoenix Contractors As
Priority date: 1987-08-06
Filing date: 1987-08-06
Publication date: 1990-02-12
Also published as: DK410687D0; DK157767C; DK410687A

Description

DK 157767 BDK 157767 B

iin

Opfindelsen angår en vejbefæstelse med mindst et asfaltlag, som foruden det bituminøse bindemiddel er tilsat jævnt fordelte små bøjelige legemer, der tjener som armering.The invention relates to a road attachment with at least one asphalt layer, which in addition to the bituminous binder is added evenly distributed small flexible bodies which serve as reinforcement.

5 Fra den internationele patentansøgning nr. WO 80/01179 er det kendt at armere en vejbefæstelse af asfalt ved hjælp af små metaltråde, og fra USA patentskrift nr. 3.581.631 er det kendt at armere asfaltlaget med et net. Disse former for armering er i og for sig effektive, men indebærer i brug ikke nogen miljø-10 fordel, fordi de på materialegenbrugsmarkedet kun findes i små mængder. Hertil kommer, at de gør fremstillingen af vejbefæstelsen dyr, fordi metaltrådene skal foldes eller krølles omkring stenene for at give en rimelig armering, og nettet er dyrt og besværligt at udlægge.5 From International Patent Application No. WO 80/01179 it is known to reinforce a road asphalt by means of small metal wires, and from US Patent No. 3,581,631 it is known to arm the asphalt layer with a net. These types of reinforcement are effective in themselves, but do not entail any environmental benefit in use because they are only available in small quantities on the material recycling market. In addition, they make the fabrication of the road attachment expensive because the metal wires need to be folded or curled around the stones to provide reasonable reinforcement and the net is expensive and cumbersome to lay.

1515

Det er formålet med opfindelsen at anvise en vejbefæstelse af den indledningsvis nævnte art, som foruden en effektiv armering af asfaltlaget, giver en miljøfordel og desuden er forholdsvis billig i fremstilling.SUMMARY OF THE INVENTION It is an object of the invention to provide a road attachment of the kind mentioned initially which, in addition to effective reinforcement of the asphalt layer, provides an environmental advantage and is also relatively inexpensive in manufacture.

2020

Vejbefæstelsen ifølge opfindelsen er ejendommelig ved, at de små bøjelige legemer er pladelegemer af tagpap, såsom tagpapaffald. Herved opnås foruden en effektiv armering af asfaltlaget en miljøfordel derved, at tagpapaffald, som forekommer i 25 stor mængde, kan finde nyttig anvendelse. Hertil kommer, at armeringen let tilvejebringes, da pi adel egernerne let lader sig inkorporere i den bitumen, der ligger omkring de enkelte sten i laget.The road attachment according to the invention is characterized in that the small flexible bodies are sheet metal sheets, such as roofing paper waste. In this way, in addition to efficient reinforcement of the asphalt layer, an environmental advantage is obtained in that roofing paper waste, which is present in large quantities, can find useful use. In addition, the reinforcement is easily provided, as in the nobles the squirrels are easily incorporated into the bitumen surrounding the individual stones in the layer.

30 Ifølge opfindelsen kan det anvendte tagpap være armeret med råpap, glasfibervæv eller -filt, polyestervæv eller -filt, eller med en kombination af disse armeringsmaterialer. Derved bliver vejbefæstelsen særlig miljøvenlig, idet resten af de nævnte materialer som ellers måtte kasseres til skade for mil-35 jøet, nu kan finde praktisk anvendelse. Ved råpap forstås et tykt sugende pap baseret på gamle klude, eventuelt med tilslag af papirfibre.In accordance with the invention, the roofing board used can be reinforced with roughboard, fiberglass or felt, polyester fabric or felt, or with a combination of these reinforcing materials. This makes the road attachment particularly environmentally friendly, since the rest of the mentioned materials, which otherwise had to be discarded to the detriment of the environment, can now find practical use. By roughboard is meant a thick absorbent cardboard based on old cloths, possibly with the addition of paper fibers.

22

DK 157767BDK 157767B

Fremdeles kan ifølge opfindelsen tagpaplegemernes største dimension være under 60 mm, fortrinsvis under 20 mm. Derved opnås, at det eller de lag, der indeholder det bituminøse lag, får øget spaltningstrækstyrke (kp/cm^).Still, according to the invention, the largest dimension of the roofing bodies can be less than 60 mm, preferably less than 20 mm. This results in the layer (s) containing the bituminous layer being given increased cleavage tensile strength (kp / cm 2).

55

Fremdeles kan ifølge opfindelsen tagpaplegemernes tykkelse være under 11 mm, fortrinsvis under 7 mm, hvorved spaltningstrækstyrken også bliver vældig god.Still, according to the invention, the thickness of the roofing bodies may be less than 11 mm, preferably less than 7 mm, whereby the cleavage tensile strength is also very good.

10 Endvidere kan ifølge opfindelsen tagpaplegemerne udgøre under 10 vægt%, fortrinsvis 0,5-3 vægt% af asfal ti åget.Denne vægtprocent har vist sig særlig hensigtsmæssig.In addition, according to the invention, the roofing bodies can be less than 10% by weight, preferably 0.5-3% by weight of asphalt for the year. This weight percentage has been found to be particularly suitable.

Ifølge opfindelsen kan de fleste af p1ade1 egernerne være af rå-15 pap, hvorhos der også kan findes små pladelegemer af glasfibervæv eller -filt, polyestervæv eller -filt eller aluminiumsfolie. Derved opnås på billig måde en effektiv forøgelse af asfaltlagets armering, fordi man i mange tilfælde kan bruge rester eller tidligere brugte portioner af de nævnte materi-20 aler, som er billige.According to the invention, most of the squirrel squirrels can be of cardboard, where also small sheet bodies of fiberglass or felt, polyester fabric or felt or aluminum foil can be found. In this way, an effective increase of the asphalt layer reinforcement is obtained in an inexpensive way, because in many cases residues or previously used portions of the said materials which are inexpensive can be used.

Fremdeles kan ifølge opfindelsen det enkelte tagpaplegeme være smalt og eventuelt udgøres af et bundt af tagpaptrævler. Denne udførelsesform for tagpaplegemerne har vist sig særlig hen-25 sigtsmæssig.Still, according to the invention, the individual roofing board body may be narrow and possibly constitute a bundle of roofing board racks. This embodiment of the roofing panels has proved particularly convenient.

Opfindelsen angår også en fremgangsmåde ved fremstilling af en vejbefæstelse ifølge opfindelsen, og denne fremgangsmåde er ejendommelig ved, at materialet i det asfaltlag, hvori tagpap-30 legemerne indgår, under sidstnævntes tilblanding underkastes en opvarmning til 130-200eC, fortrinsvis cirka 160eC. Herved opnås, at asfaltlaget kan fremstilles forholdsvis hurtigt. Man kunne nemlig tro, at tagpap var et dårligt fyld- og armeringsmiddel, hvilket er fejlagtigt, fordi det overraskende har vist 35 sig, at den bitumen, som findes i tagpappet, under den nævnte opvarmning forholdsvis hurtigt siver ud til omgivelserne, dvs. til de forskellige tilslagsmaterialer, incl. eventuel bitumen, hvorved tagpapstykkerne effektivt integreres i asfaltlaget.The invention also relates to a method of preparing a road attachment according to the invention, and this method is characterized in that the material in the asphalt layer comprising the roofing paper bodies is subjected to heating at 130-200 ° C, preferably about 160 ° C during mixing. This results in the fact that the asphalt layer can be made relatively quickly. Namely, it could be thought that roofing paper was a poor filler and reinforcing agent, which is incorrect, since it has surprisingly been found that during the heating, the bitumen contained in the roofing paper is leaking out to the surroundings relatively quickly, ie. for the different aggregates, incl. possibly bitumen, thereby effectively integrating the roofing pieces into the asphalt layer.

DK 157767 BDK 157767 B

33

Det er bedst, hvis tagpaplegemerne før den nævnte opvarmning ikke har været opvarmet.It is best if the roofing panels have not been heated before the said heating.

Opfindelsen forklares nedenfor under henvisning til tegningen, 5 hvor fig. 1 viser en del af en vejbefæstelse ifølge opfindelsen set i lodret snit, og 10 fig. 2 en udførel sesform for et lille bøjeligt pladelegeme af tagpap, set i perspektiv.The invention is explained below with reference to the drawing, in which fig. 1 is a vertical sectional view of part of a road attachment according to the invention; and FIG. 2 is a perspective view of an embodiment of a small flexible sheet body of roofing paper.

Den i fig. 1 viste vejbefæstelse består af mindst et bærelag 1 og et slidlag 2. I hvert fald det ene af disse lag er af 15 asfalt, dvs. indeholder et bituminøst bindemiddel, og er tilsat jævnt fordelte små bøjelige pladelegemer 5 af tagpap. Disse legemer forstærker asfaltlaget og har den fordel, at asfaltlagets tendens til revnedannelse under skiftende belastninger reduceres. Lagene 1 og 2 kan på sædvanlig måde også in-20 deholde passende mængder af sten, skærver, sand og andre tilsi agsmateri al er.The FIG. 1, at least one support layer 1 and one wear layer 2. At least one of these layers is made of 15 asphalt, ie. contains a bituminous binder, and is added evenly distributed small flexible sheet members 5 of roofing felt. These bodies reinforce the asphalt layer and have the advantage of reducing the tendency of the asphalt layer to crack under changing loads. The layers 1 and 2 may, in the usual manner, also contain suitable amounts of rocks, shards, sand and other aggregates.

Det i pi adel egernerne 5 indgående tagpap kan f.eks. være armeret med råpap, glasfibervæv eller -filt eller polyestervæv el-25 ler -filt, eller en kombination heraf. De små tagpap legemer 5 i asfaltlaget giver en særlig miljøfordel, fordi man nu på en naturlig måde kan genanvende brugt tagpap og tagpapaffald.The roofing board included in the noble squirrels 5 can e.g. be reinforced with raw cardboard, fiberglass or felt or polyester or felt, or a combination thereof. The small roofing board bodies 5 in the asphalt layer provide a special environmental benefit because you can now recycle used roofing paper and roofing paper waste in a natural way.

Som vist i fig. 2 kan det enkelte tagpaplegeme 5 have en stør-30 ste dimension a, som er under 60 mm. Fortrinsvis er det dog under 20 mm. Som det ses, kan det enkelte legeme 5 have form som et lille strimmelstykke med bredden b, hvor b er meget mindre end a.As shown in FIG. 2, the individual roofing body 5 may have a maximum dimension a which is less than 60 mm. However, it is preferably less than 20 mm. As can be seen, the individual body 5 may take the form of a small strip of width b, where b is much smaller than a.

35 Tagpap 1 egernerne 5's tykkelse t kan være under 11 mm, fortrinsvis under 7 mm.The thickness t of the squirrel 1 of the squirrels 5 may be less than 11 mm, preferably less than 7 mm.

Tagpap!egernerne kan udgøre under 10 vægt%, fortrinsvis 0,5-3 vægt% af det lag, som indeholder det bituminøse bindemiddel.The roofing paper corns may comprise less than 10% by weight, preferably 0.5-3% by weight, of the layer containing the bituminous binder.

Claims

Road fixing with at least one asphalt layer (1, 2), which, in addition to the bituminous binder, is provided with evenly distributed small flexible bodies (5), characterized in that the small flexible bodies are sheet metal (5) of roofing paper such as roofing paper waste. DK 157767 B

Road fixing according to claim 1, characterized in that the roofing board used is reinforced with raw cardboard, fiberglass fabric or felt, polyester fabric or felt, or with a combination of these reinforcing materials.

Road fixing according to claim 1 or 2, characterized in that the largest dimension (a) of the roofing bodies (5) is less than 60 mm, preferably less than 20 mm.

Road fixing according to one or more of claims 1-3, characterized in that the thickness (t) of the roofing panels (5) is less than 11 mm, preferably less than 7 mm.

Road fixing according to one or more of claims 1-4, characterized in that the roofing bodies (5) constitute less than 10% by weight, preferably 0.5-3% by weight, of the asphalt layer (1,2).

5 If desired, the sheet members 5 may also consist of cardboard, as may be added small sheet bodies of fiberglass fabric or felt, polyester fabric or felt, or aluminum foil. The bodies may be cut or sawn from said materials in web form. 10 The asphalt contained in the asphalt layer may be new asphalt, but there is nothing to prevent the use of recycled road materials, including recycled asphalt, or a mixture of new and old material. The road attachment according to the invention is best prepared by subjecting the material in the asphalt layer in which the roofing elements are heated to 130-200 ° C, preferably about 160 ° C during the latter ten mixing. The roofing bodies are preferably not preheated before heating to 130-200 ° C. The material for the asphalt layer is made on a mixing plant known per se. It has been found that the bitumen found in the heated roofing panels is surprisingly swiftly removed from the roofing board during heating to 130-200 ° C. Thereby, the roofing bodies will be particularly effectively integrated into the asphalt layer during the blending process.

30 Patent claims.

Road fixing according to one or more of claims 1 to 5, characterized in that the individual roofing body is narrow and optionally constitutes a bundle of roofing board racks.

Road fastening according to claim 1, characterized in that most of the squirrels are made of raw cardboard, with also small sheet bodies of fiberglass or felt, polyester or felt, or aluminum foil.

Process for preparing a road attachment according to one or more of claims 1-7, characterized in that the material in the asphalt layer (1), in which the roofing board 1 comprises the squirrels, is heated to 130-200 ° C during the latter ten mixing. , preferably about 160 ° C. 35