FI66637C - FRAMEWORK FOR BITUMINUM BEARING - Google Patents

Description

Ί Μ „„ ANNOUNCEMENT. . , 'JjSfif ^ ^ utlAggningsskrift 666 3 7 C Patent cyönr.clly 12 il 1904 ™ Patent aeddelat ^ ^ (51) KvJb / toed * C 08 L 95/00 FINLAND — FINLAND 752557 (g) Η + · Μ * φη «- 12.09.75 ν'Γ —----- ---- * · ---- K1 1 W'TI- »12.09.75

(41) Trite HUMU-nMtoeMB

Patent and rafcbtarthaltttM · ___________________________ ‘» .uj. / O

Pafnfe-och mlfrtywl— w STS *! & 31.07.8if (32) (33) (31) * rr ** r -> »» s-fconort »t 13 09.7if Ο2.Ο5.75 Austria-Österrike (AT) A 7 ^ 19/74, A 3if06 / 75 (71) Bunzl δ Biach Aktiengesellschaft, Engerthstrasse 161-163, Vienna II, Eastern Austria (AT) (72) Rudolf Hemersam, Vienna, Austria-Austria (AT) ( 7 ^ *) Berggren Oy Ab (54) Method for the manufacture of bitumen binders for building materials - Förfarande för framställning av ett bitumenbindemedel för byggnadsämnen

The invention relates to a process for preparing a bituminous binder for building materials which contain as additives mainly inorganic dispersed solids, such as crushed stone and sand, and which are used in particular for the production of compression and casting coatings. .

Several building materials are known which are obtained by using bituminous binders. Bitumen-bound building materials are particularly widely used in the manufacture of roofs, but also in the area structures of traffic platforms and also in roof layers, such as building asphalt, rolled asphalt and bituminous gravel. In this case, a binder with less than 15% of aggregate or sand is usually chosen as the road paving material. In addition to the advantages, bitumen, which acts as a binder for the above-mentioned building materials, also has some disadvantages. Thus, bitumen tends to soften at higher temperatures, such as on solar-heated surfaces, which is promoted by the dark color of the bitumen, which can result in severe depressions or deformations in areas covered by such building materials due to traffic load 2,66637. And at temperatures below 0 ° C, on the other hand, bitumen embrittlement occurs, which can also cause damage to the paving material due to traffic congestion in traffic areas or road surfaces. Both the detrimental tendency of bitumen to soften at high ambient temperatures and the tendency of bitumen to embrittle at low ambient temperatures can be substantially improved by adding polyolefins to the bitumen, and such polyolefin addition also generally improves the strength of bitumen-bound building materials. With regard to the addition of polyolefins to bitumen, which is used as a binder for a building material, there are also some proposals to add specially selected polyolefins to the bitumen and to mix in a very specific way. If the properties of the bituminous binders thus obtained or of the building materials bound with such bituminous binders are studied, it can be seen that as the polyolefin content increases, the tendency of the bitumen to soften at high temperatures and cold brittleness is increasingly inhibited. But in addition to this, it turns out that as the amount of polyolefin material in the bituminous binder increases, the stiffness of building materials bound by such binders in the machining temperature range increases quite a bit, which soon causes difficulties when such it is desired to apply with a conventional road paving machine. This situation, but also the higher price of polyolefin compared to bitumen, may have played a decisive role in preserving their chemical structure as far as possible by mixing bitumen and polyolefin as far as possible, from which it could easily be inferred that improved bitumen binder temperature the achievement of a certain strength can be achieved with a lower amount of polyolefin the less the chemical structure of the polyolefin material is disturbed when mixed with bitumen; there is also close to the idea that the treatment of such a bound building material can probably be easier the lower the polyolefin addition which increases the stiffness of the material is chosen.

It is now an object of the present invention to provide a method as described above which can be used to prepare 66637 bituminous binder for building materials in a simple manner, so that these building materials can be handled without difficulty by conventional methods and machines and in particular by treating a paving material using such a binder. finishing machine ", which also counteracts the dispersion of the mixture between the bitumen and the polyolefin material.

Said process according to the invention is characterized in that the polyethylene and / or the polypropylene and the bitumen are mixed or homogenized in a hot mixer until the viscosity of the pulp has decreased by 10-20% of the value it had immediately after the polyolefin substance dissolved in the bitumen.

It is particularly preferred in the process of the invention that the polyolefin material be added to the bitumen in an amount of at least 10% of the bitumen and that the homogenization is performed at a temperature at least about 60 ° higher than the polyolefin melting point until the polyolefin molecular structure is chemically bonded to bitumen. with. In this way, due to the cleavage of the molecular structure of the polyolefin material, which occurs under the influence of heat during homogenization, free valences are generated at the cleavage sites which immediately react with the bitumen, especially its naphthenic moieties, and it can be assumed that heat also occurs in the bitumen. , which promotes the occurrence of the above reaction. The amount of polyolefin used relative to the amount of bitumen is particularly important in initiating a chemical reaction between the cleaved polyolefin material and the bitumen.

In said process according to the invention, it is possible to use primarily polyethylene and, in addition, a low-pressure type rather than a high-pressure type, which has proved to be particularly advantageous. Polypropylene, for example, is also possible. Waste can also be used as a raw material, even when these contain active ingredients of a different chemical nature, since the process according to the invention can generally also be carried out in the presence of impurities; impurities, such as, for example, disposable plastic particles or high-melting thermoplastic particles, which act mainly as an inert substance, but also other non-olefinic thermoplastics, then behave in the form of fillers which do not participate in the chemical reaction itself.

It can be assumed that the cleavage of the polyolefin material molecules that takes place during the process of the above-mentioned invention is due to the relatively low viscosity of the bituminous binder produced by this process and the relatively low stiffness of the building material bound by this binder.

If a particularly good heat resistance of the binder is sought and at the same time a substantial reduction in cold brittleness, it is advantageous to ensure that the amount of polyolefin material is chosen to be higher than the naphthenic part of the bitumen so that the homogenized binder still has polyolefin in fine form. In this case, it can be assumed that the polyolefin-cleaved moieties and the bitumen-formed polyolefin-naphthenic compounds have the property at homogenization temperatures that they further emulsify the diluted polyolefin material, in particular polyethylene, and thus disperse it as much as possible; then probably only the emulsified polyolefin material solidifies due to its fineness during the subsequent slow cooling for the most part crystalline and thus provides said thermal properties.

It is also preferred that the bituminous binders prepared by the process according to the invention described above also adhere very well to the alkaline or acid-reactive aggregate. This can be explained by the resulting salt bridges at the rock-bitumen interfaces, which, in addition to the usual adhesion, also provide so-called interface molecular compounds and, in the present case, also a chemical bond between the rock and the binder.

In the present treatment of the bitumen-polyolefin mixture in a hot mixer, the chemical reaction between the polyolefin material and the bitumen during homogenization occurs faster the higher the mixing temperature. It is preferred to carry out the homogenization at a temperature in the range from 260 to 310 ° C, in which case the work can be carried out very particularly advantageously at a temperature of about 290 ° C. At this temperature, moreover, with a ratio of polyethylene to bitumen of 30:70, the reaction takes place in about 20 minutes. When the mixing ratio is 50:50, the reaction takes place in about 10 minutes. In this case, it has proved very advantageous for the course of the process or reaction, and in particular for the reaction rate and the prevailing viscosity, to add 30-100% of the amount of bitumen to the bitumen in order to achieve molecular cleavage homogenization.

At lower processing temperatures, homogenization of the binder for several hours is performed to prepare the road paving binder.

When carrying out the process according to the invention, several changes occur in the viscosity of the polyolefin-bitumen mixture to be homogenized or subjected to heat treatment. Initially, the viscosity is relatively low, practically the same as the viscosity of the bitumen at the beginning of the treatment time, due to the fact that the polyolefin material has not yet melted at this stage but floats in small particles in the bitumen. Gradually, these polyolefin particles begin to melt and increase the viscosity of the pulp.

After this step, the viscosity decreases considerably, which is explained by the cleavage of the polyolefin material molecules. Thereafter, the viscosity of the vis 66637 6 remains substantially constant for a longer period of time or increases very little with the formation of polyolefin-bitumen compounds.

When preparing road paving binders, the measurement of the decrease in viscosity in the process according to the invention is carried out in connection with the treatment of the polyolefin material and bitumen in a hot mixer, preferably by determining the melt index repeatedly as the treatment progresses.

Since, as previously mentioned, the process according to the invention can form binders in which the proportions of bitumen and polyolefin are practically arbitrary, in order to achieve the simplest and most economical procedure possible, it is also possible to first prepare a homogenized binder with a high polyol content. the proportion of finin, as well as the subsequent addition of bitumen to such an extent that the desired ratio of bitumen to polyolefin material is achieved in each case, so that it can be achieved practically independently. a practically suitable bitumen-polyolefin ratio, the best possible result in a homogenizing heat treatment, since the homogenized bitumen-polyolefin mass after its formation is in itself storable and, when heated after such storage, can be used directly and only needs a homogenization and heat treatment with one mixing ratio, and from this the addition of bitumen at a later time can in each case produce the desired polyolefin-bitumen mixing ratio. In this case, it seems significant that such a subsequent addition of bitumen does not damage the stability already achieved against separation. A very homogeneous binder is obtained by adding bitumen to an already homogenized bitumen-polyolefin mass and this binder mixture is then mixed with the aggregate or sand. But it is also possible to add the already homogenized bitumen-polyolefin pulp and the additional binder separately to the mixer containing hot rock or sand material, which is advantageous especially when charging several bitumen devices equipped with a so-called "Trinidad boiler" when carrying out the process according to the invention. When such devices are charged, a joint heat treatment of the polyolefin material and the bitumen is then carried out in a so-called "Trinidad boiler" and the pulp formed in this boiler is then added to a mixer where the aggregate is mixed with bitumen, whereby addition 7,66637 can be sprayed. Thus, the process according to the invention can be carried out without difficulty in the equipment in use, and as a result of the reduction in the viscosity of the binder which takes place in the process according to the invention, the prepared paving material can likewise be applied with conventional equipment in use.

The invention also relates to a process for the preparation of building materials based on a binder and an aggregate in the form of crushed stone and / or sand. This method is characterized in that the binder and the filler are mixed together while hot and the additive for this purpose is heated to a high temperature but below the decomposition temperature of the binder. Thanks to these measures, building materials with very advantageous properties are obtained when a bituminous binder prepared according to the invention is added. In the latter method, an acidic filler such as quartz sand and / or quartz sand crushed stone can advantageously be added.

The rock or sand material mixed with the bituminous binder in the preheated state is preferably heated to a temperature of about 200-280 ° C, care being taken to ensure that the selected preheating temperature is at least about 10 ° C below the decomposition temperature of the polyolefin material.

The road paving material produced by the method according to the invention has very good mechanical properties and is particularly resistant to compressions caused by traffic loads at elevated temperatures. This is also clear from the Marshall test used for the evaluation of bituminous pavements, which was performed on a number of paving agents according to the invention.

The invention will now be further elucidated in the light of some examples. Example group 1:

Polyethylene wastes in the form of thin, translucent, irregularly shaped sheets with a size of about 1-10 mm were mixed at a temperature of 180-200 ° C in a Kotthoff mixer with ordinary road paving bitumen B 80 and this mixture was homogenized. In this case, mixtures with polyolefin contents of 3, 10 and 20 by weight were prepared, and when the polyolefin was 3 by weight #, the mixing time was 10 minutes, when it was 10% by weight, the time was 15 minutes and when it was 20 wt.%, the time was 30 minutes to give a homogeneous product. The polyolefin-bitumen mixtures thus obtained became more and more gel-like in nature as the amount of active ingredient increased. The softening point, ring and ball test (DIN 1995) and penetration (DIN 1995) of these mixtures were measured, and the results of these measurements are shown in Table 1 below in the same manner as the results for the mixture using road paving bitumen B 80.

Table 1:

Composition Softening point Penetration DIN 1995

Mixture Bitumen Polyethylene ring and ball at 2 ° C at 25 ° C test DIN 1995 _ No. weight # weight # ° C 1/10 mm 1/10 mm 1 100 0 48.2 5 79 2 97 3 50.1 5 79 3 90 10 73.8 7 42 4 80 20 110.0 2 12

Example group 2:

From the bitumen binders shown in Example Group 1, asphalt mixtures for the bitumen road surface were prepared according to the appropriate instructions when the binder contained a corresponding additive containing 10 wt.% Limestone powder, 13 wt.% Natural sand 0/2, 25 wt.% Basalt gravel sand 0/2, 26 wt.% - # basalt processing game 2/5 and 26 weight # basalt processing game 5/8, in which case the binder was used 6.7 weight #. In this case, a relatively high stiffness could be observed in the asphalt mixtures thus prepared, which was also to be expected due to the gel-like nature of the active binder in asphalt mixtures containing a binder with 10 # and 20 # active ingredients. with mechanical road paving equipment.

The asphalt mixtures thus obtained were then formed into pieces for the Marshall test with impacts of 2 x 50, 2 x 35 and 2 x 75, and these test pieces were then tested in the usual manner and the measurement results are shown in Table 2 below.

66637 9

•B

I rH

-p 3 C -o m ka - = r vo o o \ ω o

(DOS tH- 1C— VO ΙΛ (M S VO rH rH

ijfl β B £ rH rH rH IA (Λ 1Λ CO rH O

C I ^ rH rH

CÖ -H 0 <

EH -P XI

O

P

CO O f- rH CTV ΙΛ N VO VO 4 · VO

.p-l ^ # * # * · * ** A Λ · * «*«> OShE vo vo laa. = r -tj- ia rv ia p td e <o ra rH o CÖ 3 ooo o o o o o o

Ο, .Γ-3 KA C— LTV rH O VO OO O KA

P, O Oi VO VO VO C— C ~ - O 'O (VI CVI

CÖ PJ XI H rH rH

XI 0)

0 I

XI O

1 rH: cö h ti ^ l av vo la Ln ^ riov f- σν o rH P KÖ rH ♦> λ ·> * »* *> λ ·» »» n) CJd H hhh rv cm (M LOv ^ r ^ r

0 o S -P

C/O

U

cö S «o> j ka cm o ka ka cm iH crviH ^ r

φ g Oi — li — I IA CO OO OO rH KV

x; O VO vo vo LTV LTV LTV -T IA LA

«Pj \ ^ ^

9η bfl CM CM CM CM AI CM (M CM CM

CM O

XJ

O O cö A O IA IA O LA A O IA

X (- | · o KA LAA Ο- Π LA C- A IA h- XI 0 3

o XI x: XXX XXX XXX

rH co CO., LTD

2 H M CM CM CM CM CM CM CVI CVI (M

CÖ EH

I · Η

1 XI P KA CM VO O

cö a> co E laa - = r ^ r XI G C >> o vo vo vo φ · Η Φ 0> Λ * **

COCÖCQXIbO CM CM CM

•B

CÖ I

K): cÖ O

O G U G e- ^ t'- Ö 0) «Ö H *> ·> Λ

• H Φ Ϊ0 CÖ VO VO VO

co o S a <1> G I 1 • H MÄ> »MÄ >> cö O o o I p: cö I p: cö

CO OO OO H O dl Ή O <D -H

0 C >> C O O G> s G

rö CQ m + H H dl CO AI H H J) • H CÖ O 0) CÖ O Φ

CO Λ Οι Ή OQ + Or Or rH

φ I — I

G cö oo oo oo • H cö * v * v ** ε g o o o

p ra rH O CÖ O

cp ra cm ka .ra- ra Ή

<C P

66637 10

Example group 3:

The Brabender plastograph was used to study the viscosity ratios of polyethylene, polypropylene, and polyethylene-bitumen blends and polypropylene-bituminous blends at constant temperature (290 ° C or 270 ° C) for a long time, with the plastograph mixer rotating at 60 rpm; and the torque required for this was measured in metric ponds. In this case, 7 experiments were performed, of which Experiment 1 concerned polyethylene waste which had been ground in advance, and the examination was performed at 290 ° C; in Experiment 2, similarly ground polyethylene waste at 270 ° C was examined; in Experiment 3, a mixture of polyethylene waste and paving concrete B 80 with a mixture ratio of 50:50 and a temperature of 290 ° C; Experiment 4 examined a mixture of polyethylene waste and paving bitumen B 120 at a 50:50 mixture ratio and a temperature of 290 ° C; in Experiment 5, polyethylene waste and paving bitumen B 120 at a blend ratio of 30:70 and a temperature of 290 ° C; in Experiment 6 ground polypropylene waste at 290 ° C and in Experiment 7 polypropylene waste and paving bitumen B 70 at a ratio of 30:70 and a temperature of 290 ° C. The obtained measurement results are summarized in Table 3 below.

66637 11 o f— in in o · * · *

f- ® t- ~ O r-l C \ J ΓΛ rH H

·· σ \

+ O C \ J

m Oh ^

Oh O CM O CM O f—

<0 Oh σ \ σ \ MD fn Ή CM

Oh CM CM CM CM rH

O

CM '-' rt rH O · Η f- Ό incQ ·· o c in crv rH σ% σ \ c ~ - e · - md

O CT \ O rH

+ m CM ft

"B

ω ^

Oh -P

Φ E - 'o CM ^ >>

rH O X

·· LO> i m. = R pQ .. ολ! md m - = r oo r— o ct \ c— o σιΟ m m m m k \ m cm cm o + in cm -p X '- w x «o

3 Oh X

rH

d c rt a)

Eh ω o. * CO r-v d

O -P

m cQ in o · η o m h - = t r ° »m m cm. · crNEMDE ^ -c ^ inintninin

+ o CM S

m o W'- 'd

Oh «rt p xti • Γ-j o. ^ T-vomin ^ -a-mm cm i c- c— ιη · = τ ^ Γ · = 3 · ιη? Ηιη

H CM i — I i — I i — I rH rH i — I rH i — I

Oh rt

-P

xo

• ra O Ln CM CM CO CM CT \ CM CO

i — i i <o \ in cm * i o oo cx> t> -

M CM rH i — li — I 1 I —I

Oh

I I

I I I I I -P -P -P

r + 34Jp> -p-pddd cO'- 'dddddddd o ao rtd ^ dddccc

·· Eo e c G G G -h -h -H

ö KÖ · Η · Η · γΗ · η · γΗ · η Ε Ε Ε rt rHrtrtE EEES rt G rtrHrt rt rt rt rt rtortortort o -HO · Η o O · Η o · Η O · Η O · Η O · Η CM -H LO-H OO · Η

Ja- <fc <i .p tart rH P CM -P m .p MD -P ΟΛ -P rH -p rH p HO

12 66637

It can be clearly seen from the measurement results shown in Table 3 above that the polyolefin material undergoes cleavage of the molecules during the homogenizing heat treatment, which manifests itself as a decrease in viscosity. This cleavage of the molecules then leads to a longer decrease in the viscosity of the polyolefin-bituminous mixtures over time during homogenizing heat treatment, in addition to the chemical reactions that occur in the polyolefin-bituminous mixtures as a result of the molecular cleavage of the polyolefin material with the bitumen. In polyolefin-bituminous mixtures, the increase in viscosity often observed at the beginning of the test is mainly due to the fact that the polyolefin material has not yet dissolved in the bitumen at the beginning of the test and the meter substantially determines the viscosity of the bitumen and only after some time the polyolefin material has dissolved in the bitumen.

Thus, the process for preparing a bituminous binder according to the invention, as shown in the examples of this example group 3 for polyolefin-bituminous mixtures, shows a substantially low viscosity of the bituminous binders thus formed after homogenizing heat treatment, making it possible to prepare asphalt mixtures for bituminous building materials. mineral fillers.

Example group 4:

In a field experiment, polyethylene strips with ordinary road construction bitumen B 120 were homogenized in a hot mixer designed for the treatment of Trinidad asphalt at an operating temperature rising above 240 ° C for about 3 hours. A 50:50 mixture of polyethylene and bitumen was formed, and further hot bitumen was then added to this mixture to give a bitumen content of 15, 18, 20 and 25% »and then these polyethylene-bitumen mixtures were sprayed into a conventional mixer (Wibau) where was a stone additive heated to 230 ° C, and asphalt mixtures were prepared. A total of about 600 meters long and 5 meters wide pavement for the average traffic load was prepared from the 15, 18 and 25% polyethylene blends and the non-active bitumen-bound building material used for comparison. The pavement was made 66637 13 then with a mechanical paver, and the material fitted with these devices was then compacted with a rubber wheel roller and two double rollers. In this case, it could be seen that the paving material prepared using a binder containing 25% polyethylene was also perfectly machinable with a machine paver, i.e. its rigidity was such that a normal working method could be used for the bituminous material. Nevertheless, subsequent studies with specimens made partly of the mixture were partly formed by so-called drill cores, i.e. drills, taken from the finished pavement, that improvements in bitumen were observed regardless of the presence of molecules in the polyolefin material. it was also found in part that the properties improved in direct proportion to the simple addition of the active ingredient in the bitumen, with no cleavage of the molecules.

It can also be pointed out here that the determination of the cracking rate at 20 ° C with Marshall bodies showed that the tensile fracture with bodies (bound with non-active bitumen passes between separate crushed stone granules in the binder, while Marshall bodies made of mixtures K III, K IV). in pieces, i.e. in bodies bound with bituminous binders obtained according to the invention, the fracture passes evenly and diagonally through the crushed stone granules and the binder, which speaks for excellent adhesion between the bituminous binder and the crushed stone granules, and is explained by the formation of polyolefin-naphthalene .

Furthermore, the measurements of the slip coefficient performed with the RRL pendulum according to British Standard 812: 1967 and SNV 6 * 10511 on the pavement showed somewhat better grip (average of a large number of measurements SRT 63) on the binder-bound trips according to the invention than on trips without bits. 120 as a binder, which was 7% (average of a large number of measurements SRT 61).

Tables 4 and 5 below show the measurement results obtained in the studies of Marshall bodies and drills. In this case, the measurement results obtained with Marshall-14 66637 pieces made using bitumen without active substance are marked with the symbol AB 0/12, the measurement values obtained with Marshall pieces made with a material with a mineral additive content are marked with AB 0 / 12K was the same as in paragraphs AB 0/12, wherein the binder of the Marshall pieces AB 0/12 K was a polyethylene-bitumen mixture containing 20% polyethylene. The binder content of the Marshall bodies AB 0 / 12K was also 7% · Table 5 shows the measurement results obtained with the Marshall bodies and drills marked KI, K III and KV, whereby the Marshall bodies were always made of one of the three bitumen-bound coatings used as test pavement. with the same mineral addition in all three cases, and separately KI means results for non-active bituminous binder-bound material K III results for 25% polyethylene-bound bituminous binder material and KV results for 15% polyethylene-bound bituminous binder material. The binder content of these substances was then 6.5% in all cases. Marshall bodies and drills for materials with a bituminous binder made in accordance with the invention also showed much better durability with such building materials than with non-active bitumen-bound building materials in studies simulating extreme climatic effects.

In addition, relevant studies were performed on Marshall specimens made from the three above-mentioned materials used in the above-mentioned test periods. In the first of these studies, the specimen underwent five cycles: a) storage in saturated saline at 20-22 ° C for 15 hours, b) storage in air at 20-22 ° C for 9 hours, c) storage at -20 ° C. (air conditioning mode) for 15 hours, d) storage in air at 20-22 ° C for 9 hours.

Immediately after the last cold air treatment, the compressive strength was determined using a 50 cm steel punch with broken edges using a compression speed of 25 mm / min. The following values were obtained: 15 66637. p

Substance Compressive strength 50 cm Compressive strength per surface K I more than 10,000 kp more than 200 kp / cm2 K III more than 10,000 kp more than 200 kp / cm2 K V more than 10,000 kp more than 200 kp / cm2

In the following experiment, after the above cycle, storage was carried out for seven hours at room temperature to give the following values:

• P

Material Compressive strength 50 cm Compressive strength per surface K I 4000 pcs approx. 80 pcs / cm2 K III 6150 pcs approx. 123 pcs / cm2 K V 6350 pcs approx. 127 pcs / cm2

In another study, Marshall bodies were subjected to a circulation five times, comprising the following steps: storage in air at -20 ° C for 15 hours and subsequent storage in air at 20-22 ° C for more than 33 hours. After the last quench air treatment, Marshall bodies were kept at a temperature of 20-22 ° C and then the compressive strength was measured. The following values were obtained:

Material Compressive strength 50 cm2 Compressive strength per surface K I 3800 kp approx. 76 kp / cm2 K III 6350 kp approx. 127 kp / cm2 K V 6400 kp approx. 128 kp / cm2

Finally, a compressive strength measurement was performed on 5 cm diameter curves with a height of 5 cm after 12 cycles of 12 hours storage at 60 ° C followed by 6 hours storage - At 20 ° C, when the piece bound with bitumen containing 15% polyethylene showed a compressive strength of 1250 kp when loaded with a punch with a cross-section of 50 cm2, and for curves with 25% polyethylene-containing bitumen as binder, the compressive strength was 1500 kp. The drills bound with normal bitumen had already broken in the temperature-varying grooves due to their own weight.

66637 16 o • H CO ro% s.

«E E ι

GftEftEEEEoOrH ft g

J Λ H Ä E E E E ^ '-.- h JX E

E bO bO P

-B

Q, 0.0 o

i — I ^ H HI ^ H i— || ι — I

H OO ΙΟ b- OOOLOCT \ b ~ -r0.3-.a- O b- 6 ^ c \ j- = j-voiHi-hc \ ic \ j «» «md st

03 LO "» ·> (M C \ l LO

LH iH O O O | | | T-I

en i I i I i i I ro ι i ocMLocTiioroocMLO o en 3 is cm o Oi — to ^ r ^ a · md ro \ OO K * \ *> ** * 0i «\

rH O O O C \ | CM rH

«

CM I — I

oc ^ r ^ r - ^ - ^ rMDMDK ^^ o-i m lo <9 t- ^ <C r — 1 O rH CM v £)

G I — I CM I — I sr MD

CD * 1 * \ Λ Λ Λ

G O rH CO CM o o OCMCMr — I O rO

• H O (O CO ι — I ιΗ ^ Γ

E ι X σ \ -3 · LO

• H rH rH

X

-P

3

·· -P

ST

G

O 0)

X Ό X -H 3 CD r-H iH

3 Cd ro - = r

CÖ ft M3 rH

EH ft ΓΟ -3- LO O ro

Ctf O CM CM - = 3 "sr« ·> rH LO

.X VL LO LO · = Γ IO LO Λ CM CM CM

I lO rH CM n Olli rH

H LO rH O Ή I 03 CO I I

h ct \ ι ι ι ι ι m en in m o cm cd orOrHO- = r0rH- = r ^ r f- sr £ 1 3 CM - = T C— CM O · ΐ “3 ·> *> *> o

CO rH "Cd O CM CM rH

G H O, C

cd CM

S rH CD

\ rH

o Cd. m. M3 G Loinrorovo ft ro "w 1 m> OQ ft 10

<Cd rH MD

en X rH MD o cm (D ro - = r LO oo · »O ** ·> ** · * O [- O C— b * - ι — I O w O CM CM rH - = T sr

sT ST O CM H

IX CM H rH

rH

X -G, G II

I-H CQ O G · Η rH 3rH.rHi — I t> «H CCd cd 3 G O cd ft

Ä I-H · ι-ϊ ·> «·> Cd-Pto G

Cl] rl 3 CM CM CM CQ CO CQ O "H

Gcd rHEEE 3cd ·· cx3 G

Cd .C CQ O O O CQ P G O G

S CQ CQ · Η> i -H cd O O -H xd

G 3 E LO LO LO CD E> o P O CQ

O Cd 3 Cd CQ CQ CQ il GM3 CQ P CQ

> S * oCD >> '>>> *'> s * »· Η OG * H CQ Φ G 3 .X> ιϋ>» 0> iO 43 3d 3 cd G 3 cd T>

3 O rH il> O> 0> 0 CD G rixj CQ CD H G CD

en> en o> ιθ>, o>, oe * d i-hcd icd> 3 G * rt H CQ MD CQ M3 CQ -3- · Η Äd rH Xd, Χ rH> • P cd E ι cd cd cd edE γ-h> H xd i-ι e

• hocooE ^ E ^ E ^ cqio cd-Hadca cd G cd E P <D P 3M3M3bO>) CiH XJXd-rjtQ .G CD CD

CD G CQ X CQ G X G X G J * <D X CD COft CD CQCQ ^ cJ

G O · Η £ 1 · Η -H · Η · Η G Cd P G I Cd G -H rH

• h 3 30 3cdocdiocdLO * HcdG cd o · η <d cd xd xd <«GGiGfGiOftb- ftb-EHKO S oo β> S> -o 66637 17

Table 5:

Exploring Marshall songs and drills

Subject K I K III KV

The average density of Ilarsball bodies was 2.405 2.298 2.350 g / cm 2

The average density of the curves is 2 437 2.303 2.364 g / cm 2

The average density of the raw material is 2.504 2.461 2.490 g / cm 2

Marshall cavities 4.0 6.6 5.6% by volume

Cavernous cavities 2.7 6.4 5.0% by volume

Degree of tightness 101 100 101%

Marshall load value 840 1830 1750 pcs

Marshall slip value 21 16 17 ^ mm

Cracking strength at 20 ° C 830 1780 1520 kp

Slip value of cracking strength 29 22 2 2 y0 mm

Axial compression test 20 ° C, 50 mm / min 6730 9850> 10600 pcs

Claims (7)

18 6663 7 A process for preparing a bituminous binder for building materials which contains as an additive separate solids which are mainly inorganic, such as crushed stone or sand, and which are used in particular in compression and casting coatings, homogenizing bitumen and polyethylene and / or polypropylene characterized in that the polyethylene and / or polypropylene and the bitumen are mixed or homogenized in a hot mixer until the viscosity of the pulp has decreased by 10-20% of the value it had immediately after the polyolefin substance dissolved in the bitumen. Process according to Claim 1, characterized in that the polyolefin substance is added to the bitumen in an amount of at least 10% of the amount of bitumen. Method according to Claim 1 or 2, characterized in that a polyolefin substance is added to the bitumen for molecular cleavage homogenization in an amount of between 30 and 100% of the amount of bitumen. Process according to Claim 1, characterized in that further bitumen is added to the homogenized bitumen-polyolefin pulp. Process according to Claim 4, characterized in that the additional bitumen is added to the homogenized bitumen-polyolefin mixture after storage. 1. Fertilizers for the production of bituminous binders in the form of consumables, in which case the materials used are separated from the organic material, in the form of a plastic splitter and a bond, and in the case of special compression fittings, / or homogenizers of polypropylenes and of various forms of polyethylene, including polyethylenes and polyethylenes