CN1114258A

CN1114258A - Method for recovering and utilizing waste rubber tyres

Info

Publication number: CN1114258A
Application number: CN94107810A
Authority: CN
Inventors: 杨春霖
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-06-30
Filing date: 1994-06-30
Publication date: 1996-01-03
Anticipated expiration: 2014-06-30
Also published as: CN1044693C

Abstract

The method for recovery of waste rubber tyres and making all-weather race track includes such technological steps as making waste rubber tyres into fine strips or powder, mixing with asphalt and aggregate, heating while stirring to smelt surfacial layer of fibre strips for obtaining asphalt concrete containing fibre strips, and spreading it onto race track on ball field. Said all-weather race track features proper elasticity and durability, not ageing easily and easy maintenance.

Description

The recoverying and utilizing method of waste rubber tire

The present invention relates to a kind of recoverying and utilizing method of waste rubber tire, be particularly related to a kind of will giving up and be used for the method for utilizing of all-weather track and field runway material as the rubber tire tire, it is with the fine bar of waste rubber tire and fine powder mix asphalt and contains the aggregate of rubble, sand, stone flour, and is layed in track and field runway or court surface.

The progress of society and the raising of standard of living, make auto industry flourish, correspondingly be produced as the considerable damaged tire of number, according to statistics, Japan has 4,900 ten thousand of damaged tires every year approximately, and the U.S. promptly estimated at 2,000,000,000 damaged tires to be abandoned in 1978 1 year, and annual growth rate is 200,000,000 more than.Because the tire waste material has character such as rotproofness, resistance to ag(e)ing and drug resistance,, will influence natural landscape, and cause environment pollution if it is abandoned arbitrarily; Then produced thick smoke and stench if burn, cause serious air pollution and cause the secondary public hazards.Therefore, how to deal carefully with waste rubber tire, real is a current society difficult problem anxious to be solved.

General waste rubber tire is the groove wearing and tearing or the breakage on its top layer only, but the rubber properties of tire is also quite good, if it is abandoned reality when unfortunate, the inventor is through research for many years, think that the rubber tyre that this is discarded is used in runway or the court surface material, not only can utilize refuse, save resource, also can reduce the secondary public hazards.

Again because culture is progressive and motion general mood is gradually long, in recent years, the runway of sports ground, ditch has been eliminated cinder track or common brick runway in the past gradually, and use novel plastic cement race track instead, as the smooth place of all-weather of nineteen sixty-eight Mexico's Olympic Games, the REKORTAN of the U.S., and Japan also imitates the exploitation of American-European state various countries EVER COAT (excellent muddy road), REOTAN.But take a broad view of above so-called new type plastic runway, it is made to be polyurethane resin (POLYURETHAN), though water proofing property is good, beautiful appearance, but usually at summer temperature during up to 65～70 ℃, then have bubble and peel off (water of 1g promptly becomes about 12001 gas at 65 ℃, and diameter can reach 3cm-40cm during foaming).So safeguard that all the year round its maintenance expense is high down, real non-general school or small-sized athletic ground institute can be from loads.

Therefore, purpose of the present invention promptly is to provide a kind of waste rubber tire is used for round-the-clock track and field runway recycling of materials method, this method comprises: the tire that will discard, be whittled into fine strip shape and fine powder, it is mixed with pitch and the aggregate that contains rubble, sand, stone flour, and stirred, make runway with hot process.Compare with the plastic cement race track of polyurethanes series, except that need not special maintenance work, its price also has only about 1/4 of plastic cement race track, general school or small-sized athletic ground all can be born by thing, and generally adopted.

The present invention relates to a kind of waste rubber tire and be used for all-weather track and field runway recycling of materials method, this method comprises: it is 0.5～1.5mm that waste rubber tire is whittled into diameter, length is the fine powder of the about 16mesh of gained fineness in the fine strip shape of 5～20mm and the working angles, then it is mixed with pitch and the aggregate that contains rubble, sandstone powder, the gained mixture adds thermal agitation and closes under 145～180 ℃ temperature, the all-weather track and field runway of mating formation and becoming to have elasticity, durability with hot process.

According to method of the present invention, wherein, waste rubber tire and pitch and the ratio that cooperates that contains the aggregate of rubble, sand, stone flour are:

Waste rubber tire 10～15%

Pitch 11～15%

The aggregate 70～79% that contains rubble, sand, stone flour

According to method of the present invention, wherein, the production process of described mixture is: will dry in the pitch that sprays into 160～175 ℃ to 160～175 ℃ the aggregate drying, mix and stir fine bar of waste rubber tire and the fine powder that the back adds normal temperature, get 145～180 ℃ material through stirring, then it evenly is layed in runway, forms through the road roller roll extrusion.

According to method of the present invention, wherein, the pitch in the described mixture contains reinforcing agent, and the Main Ingredients and Appearance of this reinforcing agent includes the mixture of anti-stripping agent, age resistor and flexibilizer, and addition is the 2-4% of used pitch amount.

Main feature of the present invention and advantage describe in detail and more become clear in conjunction with following appended illustrated embodiment.Brief Description Of Drawings

Fig. 1 is a manufacturing flow chart of the present invention.

Fig. 2 is a standard rerum natura analytical table of the present invention.

Fig. 3 is the economic comparison analysis table of the present invention and other kind runways.

See also Fig. 1, the inventive method may further comprise the steps:

1, waste tire being whittled into diameter is 0.5～1.5mm, and length is 5～20mm rubber fibre bar and tire fine powder (can obtain this fine powder simultaneously when being whittled into rubber fibre bar, its size is about 16mesh);

2, the fine bar of rubber tyre and fine powder and pitch and the aggregate that contains rubble, sand, stone flour are mixed, its ratio is 10%～20% of a mixture weight, is preferably 10～15%;

3, mixed material is added thermal agitation under 145～180 ℃ temperature, its time is 2～2.5 minutes, so that the top layer fusing of the fine bar of tire, and it is bonding with the pitch material, the tire fine powder then expands and is dissolved in the pitch, increases the viscosity of pitch, constitutes and contains the about bituminous concrete of rubber fibre bar;

4,,, be layed in runway or sport surface with the above bituminous concrete that makes (lay temperature and must not be lower than 110 ℃) in the hot shop of general asphalt roads face mode;

5, after laying is finished, can spray one deck vinyl acetate (E.V.A) emulsion above again,, and prevent that rubber strip from coming off with the enhancing water resistance.

See also Fig. 2, it is the standard rerum natura analytical table of the present invention and other types material, it is to fall relation between impact absorbency (SB) that formed bounce-back height done and the bounce-back property (GB) with one inch steel ball and standard specification golf naturally by one meter height, the elasticity that can show various top layers thus among the figure, and the most approaching natural clay track of pitch elastic mixture, the CB coefficient, both values of SB coefficient are littler, load to health is littler, because this kind skin-material has higher elasticity, is rich in shock absorbing capability, so do not have the shortcomings such as elasticity backwash of macromolecular material,, can lower the suffered load of health yet to long motion.

See also Fig. 3, by finding out among the figure, the laying expense of PU runway is very high, and it is after about 5 years service life, also need bear the maintenance cost of great number, though and chiltern runway and common brick powder runway laying expense are lower, in each year after the laying, still need constantly to keep repairing, can continue to use.The present invention's's (RAC runway) the only a little higher than common brick powder of laying expense runway is repaiied though also need keep behind the time limit of Yu Wunian, and expense is far below the other types runway.

In the above-mentioned manufacturing process, the fine bar of damaged tire with 0.5～1mm for most preferably, if too thin, then rubber fibre bar all melts in the heating whipping process and mixes in pitch, do not retain and there is rubber fibre bar, tectosome follows the string, if the glue work property reduction of too thick then rubber fibre bar and pitch, length as for rubber fibre bar, through long-term experiment result of study of the present invention, serve as preferred also, if too weak point then follows the string with 5～20mm, oversize then also stirring, and the outstanding surface of laying of bullet.

For can be more detailed understanding characteristics of the present invention, the performance of the present invention and polyurethanes (PU) resin runway is compared as follows:

Characteristics and performance	The present invention	The PU runway
Characteristics and performance	The present invention	The PU runway	1 equipment is laid	Ordinary road heat is laid and is equipped with	Price is high
2 durability	Be difficult for wearing out and never peeling off, also can not run off because of the place of raining	Because of belonging to plasthetics, the surface is through exposing to the sun and rain and moisture and efflorescence easily, peeling off	1 equipment is laid	Ordinary road heat is laid and is equipped with	Price is high
2 durability			3 practicality	Valency low (near the common brick runway) can generally use	Cost an arm and a leg, be difficult for generally using
4 climate temperature variable effects	Hardness is susceptible to not		3 practicality		Cost an arm and a leg, be difficult for generally using
4 climate temperature variable effects	Hardness is susceptible to not		5 repair	Easily simple	Be difficult for because of being difficult for contacting, repairing with the original

The continuous table of going up

Characteristics and performance	The present invention	The PU runway
Characteristics and performance	The present invention	The PU runway	6 proportions	1.5～1.7	1.1～1.2
7 maintenance costs	No special maintenance technology, expense is low	Need the special maintenance technology, the expense height	6 proportions	1.5～1.7	1.1～1.2
7 maintenance costs	No special maintenance technology, expense is low	Need the special maintenance technology, the expense height	8 colorings	Black, common brick look, bottle green	Any color
9 working environments	Avirulence	Toxic, need carefully construction	8 colorings	Black, common brick look, bottle green	Any color
9 working environments	Avirulence	Toxic, need carefully construction	10 hardness	50～60	40～60
11 construction methods	General asphalt pavement construction method	The plastic coat construction method needs the special technique of plastic material aspect	10 hardness	50～60	40～60

Except that the comparison of above-mentioned and PU runway, the present invention does not also have the easy ponding of common brick powder runway, dust, and inelastic shortcoming in the whole field, does not have long weeds of cinder track and easy abrasive drawback yet.

The actual cooperation ratio that damaged tire mix asphalt concrete of the present invention is made the runway preferred embodiment is: A, the round-the-clock track and field runway of black elasticity

1 match ratio:

Pitch 13kg

The fine bar 10kg of waste rubber tire

Waste rubber tire fine powder 1kg

The aggregate 76-100kg that contains rubble, sand, stone flour

2 stir and paving method:

150～160 ℃ of temperature

The general asphalt surface hot of mode

Shop mode B, the round-the-clock track and field runway of common brick look elasticity:

1 match ratio:

Pitch 13kg

The fine bar 10kg of waste rubber tire

Waste rubber tire fine powder 1kg

Red oxidation inorganic pigment 10kg

The aggregate 66-100kg that contains rubble, sand, stone flour

2, stirring and paving method:

155～170 ℃ of temperature

The general asphalt surface hot of mode

Shop mode C, the round-the-clock track and field runway of green elasticity:

1 match ratio:

Pitch 13kg

The fine bar 11kg of waste rubber tire

Waste rubber tire fine powder 1kg

Green oxidation inorganic pigment 10kg

Aggregate 67kg～the 100kg that contains rubble, sand, stone flour

2 stir and paving method:

155～175 ℃ of temperature

The general asphalt surface hot of mode

The shop mode

In sum, the present invention utilizes waste tire, is whittled into fine bar and fine-powdered, and mat mixes with pitch, and formation contains the bituminous concrete of rubber fibre bar, be layed in runway ground with hot process, this paving is removed to possess and is difficult for wearing out, not being subjected to influence of temperature change hardness and anti-skidding and tool elasticity, runs with useful player, reduce outside the advantages such as fatigue of knee and muscles, and cheap, construction, maintenance have industrial value easily.

Claims

1, a kind of waste rubber tire is used for all-weather track and field runway recycling of materials method, this method comprises: it is 0.5～1.5mm that waste rubber tire is whittled into diameter, length is the fine powder of the about 16mesh of gained fineness in the fine strip shape of 5～20mm and the working angles, it is mixed with pitch and the aggregate that contains rubble, sand, stone flour, the gained mixture adds thermal agitation under 145～180 ℃ temperature, it is mated formation with hot process becomes to have the round-the-clock track and field runway of elasticity, durability then.

2, the method for claim 1, wherein the cooperation ratio of pitch, aggregate and waste rubber tire is:

Waste rubber tire 10～15%

Pitch 11～15%

The aggregate 70～79% that contains rubble, sand, stone flour

3, the method for claim 1, wherein, the production process of described mixture is: will dry in the pitch that sprays into 160～175 ℃ to 160～175 ℃ the aggregate drying, mix and stir fine bar of waste rubber tire and the fine powder that the back adds normal temperature, get 145～180 ℃ material through stirring, then it evenly is layed in runway, forms through the road roller roll extrusion.

4, the pitch in the method for claim 1, wherein described mixture contains reinforcing agent, and the Main Ingredients and Appearance of this reinforcing agent includes the mixture of anti-stripping agent, age resistor and flexibilizer, and addition is the 2-4% of used pitch amount.