DE2247110A1 - BITUMINOESE EMULSION - Google Patents

Description

The invention relates to an improved bituminous emulsion for paving or. Flooring, in particular on a homogeneous bituminous emulsion with added synthetic. Styrene type resin.

It is known that a soil fragrant mixture, which only contains a bituminous emulsion as a binder, the aggregate composition being more than 50% of coarse aggregates such as gravel, Ballast, etc. (where the particle size is more than 2.5 mm) and less than 10% fine particles such as soil, sand, stone powder etc. (which pass through a sieve of 74 µ (JIS)), gives satisfactory results "However those Ga ..." mix what is more than 50% soil, sand, etc. with a

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Contain particle sizes of less than 2.5 mm * in particular those mixtures which have more than 10% particles that pass through the JIS (Japanese Industrial Standard) -74 µ sieve can have a variety of disadvantages. For example, if the bituminous emulsion mixture has a short hardening time, they are unstable and require a long hardening time, and a normal case during hardening leads to the destruction of the product. The main aim of the invention is to avoid and eliminate those disadvantages which accompany a known bituminous emulsion mixture used for a surface base course, sub-base course, etc., and insufficient stability in the earlier stage of hardening and occurrence of softening flow, deformation and washout at high temperature (in summer or at a time, being applied with the high temperature asphalt mixture layer) which scwie to provide an improved new bituminous Q mixture.

According to the invention, a novel bituminous mixture can be used can be obtained by making such an emulsion an emulsion or solution of synthetic resin of the styrene type «is added. ι

The product obtained according to the invention switches such ' previous disadvantages, i.e. the improved bituminous emulsion mixture has remarkable stability during of the earlier stage and all subsequent stages, it

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deforms less at high temperature, has improved Water resistance properties and has desirable flow properties,

Floor covering asphalt emulsions, paving an emulsion , - which contains ordinary and blown asphalt, tar emulsions and asphalt tar emulsions, can be used for the bituminous emulsions according to the invention.

Any type of bituminous emulsion such as cationic type, non-ionic type, anionic type, immersion type (immersion type), Mixed type or coating type can be used in the present invention. Polystyrene (crystalline and non-crystalline), with rubber compatible polystyrene, styrene-butadiene copolymer, Styrene methacrylate, acrylonitrile butadiene styrene copolymer etc »or their solutions in toluene, xylene, petroleum naphtha, etc., or emulsions of the above-mentioned compounds in toluene, Xylene, petroleum naphtha, etc. can be added.

Any type of detergent, cationic, anionic or nonionic detergents (cleaning agents) can be used for emulsifying the synthetic styrene type resins according to the invention be used. The synthetic styrenic resin can be swollen, dissolved or fluidized in any desired Solvents such as toluene, xylene, petroleum naphtha, trichlorethylene, for the synthetic styrene resin solution crenfiss der

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Invention can be used.

Foamed synthetic styrofoam can also be used from discarded molded articles for the emulsions can also be used, resulting in remarkably inexpensive products.

Mixing can be done at atmospheric temperatures door effect. However, if the viscosity of the to be mixed Emulsions are too high for mixing, so you can effect mixing easily at elevated temperature.

The synthetic Styrölharζlösung is formed in the bituminous emulsion by heating, which increases the viscosity is lowered to any desired level.

For mixing with the granulated aggregate, it is most preferable to prepare a homogeneous mixture. By first making an emulsion or a solution of the styrene type synthetic resin into a bituminous emulsion added, although these emulsions can first be mixed with the aggregates separately, and that both mixed together to form a homogenized mass.

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The amounts of styrene-type resins, Which lead to a bituminous emulsion added can vary. A preferred composition is 97 to 20% by weight bitumen and 3 to 80% by weight of the styrene type synthetic resin, respectively on the basis of the solid residues. A resin content of less than 3% is not effective and a resin content above 80% gives increased stability (strength) but inferior Binding property, inferior flexibility and causes increased manufacturing costs. For practical Implementation of the invention can be used hitherto known methods, which for covering, with a bituminous Emulsion were applied, with conventional units in a stationary central plant system or in a locally movable plant system are mixed «, according to the invention one uses a bituminous emulsion, to which certain amounts of synthetic resin emulsion or solution of the styrene type can be added to obtain an improved bituminous emulsion mixture.

The mixture thus obtained is compressed and sealed according to a conventional method, for example by means of a roller system, which creates an excellent substrate or surface layer is generated, which could not be achieved according to the prior art.

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The invention is illustrated by the following exemplary embodiments explained in more detail

example 1

For the bituminous emulsion, emulsified asphalt emulsion is used in accordance with JISK 2208 cationic petroleum asphalt emu Is ion MK-3 (asphalt residue 601, penetration 150). '''■' ■. ^: '' ^{λ :} '-''^{; V:} ■ ■■■ ^: '''" ^{! ::}

Styrene-butadiene copolymer emulsion (residual resin 40%) Used for the styrene type synthetic resin emulsion, which is prepared by making styrene-butadiene copolymer dissolved in toluene and then emulsified with an emulsion which contains a cationic detergent and a protective colloid.

The two liquids are mixed together to produce 6 samples according to the invention. Table I. illustrates the samples thus obtained, in which the mixing ratios of asphalt to resin in tests 2, 3, 4, 5, 6 and 7, 97i3, 95i5, 80t2, 60:40, 40:60 and 20:80, respectively on the basis of the solid residues, i.e. the mill ratio from asphalt emulsion to resin emulsion are 162 kg / 7.5 kg, 158 kg / 25 kg, 133 kg / 50 kg, 100 kg / 100 kg, 67 kg to 150 kg or 33 kg to 200 kg. 5 kg (calculated as a fixed Residues) of the improved asphalt emulsion thus obtained

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of Test No. 2 of Table I are added to 100 kg of mined granite (water content 5%) as illustrated in Table II and mixed in a beater mill for about 30 seconds to produce about 108 kg of a mixture according to the invention. Similarly, the other 5 samples of tests # 3, # 4, # 5, # 6, and # 39; 7, in the amount of 5 kg each, mixed with 100 kg of mined granite, so that 5 further samples with different mixing ratios are obtained. The thus obtained 6 samples of the invention are leweils subjected to the Marshall test, the corresponding mixtures in water at 30 ⁰ C for 30 min., 3 days, 7 days and 21 days are dipped after release from the molds in a room. Tests no. 1 and 8 are not mixtures, but are 100% asphalt without resin content, or 100% resin without asphalt. They are only known for the sake of comparison with. Asphalt emulsions described.

The results obtained are in a Marshal test column shown in Table III. Table II shows the properties of the mined granite and Table IV shows the properties of the aggregate.

To explain the invention in more detail, two samples are prepared for the Marshal test, one of which Sample is a mixture of mined granite and emulsion

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(Test no * 4 of the Tahäle I) passes, and is prepared by the improved asphalt emulsion according to the invention as Binder of the quarried granite used. The composition of the asphalt emulsion is 80% asphalt and 20% styrene * Butadiene copolymer, calculated on the basis of the solid residue, and another sample is a mixture which consists of mined granite and asphalt emulsion, prepares μη-ter Use only a conventional asphalt emulsion.

These are then subjected to the Marshal test, whereby they are immersed in water at 60 ° C. for 30 minutes for 3 days, 7 days and To be immersed 21 days after release from the molds. The results obtained are shown in Table V.

Two more mixed samples are used for the Marshal test prepares. One of these is an asphalt emulsion mixture which is similar to Test No. 9 of Table III, and the other is an asphalt emulsion mixture which prepares was made using only the simple asphaltene emulsion alf binder instead of the asphalt emulsion mixed with Polystyrene solution of Test No. 9 (lent No. 12 of Table VI). They will be at 60 ° C for 30 min. 3 days, 7 days or 21 Immersed in water days after release from the troughs. The results obtained are shown in Table VI.

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Example 2

The asphalt emulsion used in Example 1 is used for the bitumen emulsion, and polystyrene dissolved in the same amount of xylene as in toluene in Example 1 is used as the styrene type synthetic resin solution. 150 kg of the asphalt emulsion, which are at 60 ° C., are mixed with 20 kg of the "polystyrene solution, which is heated to 80 ° C., whereby the mixing ratio of the asphalt emulsion to the polystyrene solution is 90% by weight of asphalt to 10% by weight of resin, calculated on the basis of the solid residues, is, The 170 kg improved asphalt emulsion thus obtained is cooled to room temperature and 3 kg (calculated as fast residues) of the emulsion thus obtained are each mixed with 100 kg of 3 structural silicate aggregates., as in Table IV illustrates about 30 seconds of mixing (or adjusted to maintain optimally sealed water content at 4%) by means of a mixer, obtaining about 105 kg each of the corresponding three mixtures, the pressures of which are illustrated in Table III ( . tests Hr 9 _S 10 or HK These are submitted to the Marshal test, while at 30 C 3O MIn _0-3 days, 7 days or "2.1 days jiaeh release from the molds immersed in water are ₉ he obtained results are illustrated in Table III »

In dan Marshal-Testa der Tabsila l _{s shown} in Table III, 3 0 9 0 17/070 ·; ' -

Table V and Table VI mean stability (kg) corrosion minimizing strength the sample which was subjected to the tests. Flow value (1/100 cm) means the flow displacement of the samples, which the stability factors xinterjected, at the point of Destruction. Immersion or immersion stability (%) means the percentage of the stability of the; 48 hours in water

immersed samples to the samples which are not immersed in Walser.

Tables I and ITI illustrate that 'or the floor covering, Depflafiterungsgemisch using the improved bituminous or ABphaltenulsion according to the invention as a binder, many advantages has when it is used as BelagmaterLaI such as faster stability tested at 30 ⁰ C , excellent immersion stability (higher percentage means improved water resistance property) with longer product life, etc.

Tables V and VI illustrate that dag coating mixture or by applying the bituminous invention AsphaitemuIslon, very different values indicates, when it is subjected at 60 ⁰ C the Marshal Te3t, compared to a conventional Belagsemulsionsgemlsch according to the prior art, and that it Sufficient stability at the highest street temperature ("tv / i 60 C in Japan) under natural atmospheres; jnhi" n HeiiHnijungtm bon 1 tit, and j was uncomfortable under drying

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as well as under wet conditions »

Further, the Marshal test of Table V illustrates that the flooring mixture of the present invention having an aggregate such as mined granite, etc., which contains more than 20% particles that pass through a 74µ sieve (JIS), has fully faster stability under both dry conditions as well as can be used under wet condition. Accordingly, the improved floor covering mixture according to the invention can be applied ^w ith many materials such as gravel, pit gravel, SHIRASU (volcanic ash), decomposed granite, volcanic gravel, etc. which can be used for any known nlclt flooring mixture.

The improved bituminous or asphalt emulsion mixture according to the invention has an excellent and remarkable effect on the flooring quality * Furthermore it can be made in situ using the cheapest raw materials.

The bituminous emulsion containing a given amount of the resin according to the invention can thus be applied effectively are applied to underground layers, foundations and surface layers etc. from airports, parking lots, station roads or factory platforms, school yards, light embankments, rail ballast, etc.

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Table I: Results of the Marshal Test of Mixtures with mined granite at 30 ° C

Test no. Hardening Asphalt (%) 1 I. 2 97
3 ; 3, 4th 80
20th 5 ' I.
6th 7th 20th
80 8th" Mixing ratio of
Asphalt resin emulsion
mix (calculated as 3 days Resin (%) 100
0 IOC
5 . .95
C.
J 100
5 60 ⁴⁰ y
60 · 100 ^: 0
100 Mixing ratio of zer
smaller granite to the Emul
sion mixture (emulsion
mixed calculated as T? i! r; teiHinrt » f paid
Granite (kq) 100
5 131 100
5 149 40 i
100 5 100
5 Hardening Emulsions
mixture (kg) 105 28 140 28 100
5 5 290 381 Stability (IcS 29 76 27 98 188 196 21 19th Marshai 7 days Flow value ^KX ^ i
0 332 85 466 25th 24 98 101 test Hardening Immersions
stability (%) 286
j 28 353 29 98 ' 99 903 1349 Stability (kg) 30: 85 28 99 683
1 791 20th 14th (30 C) 21 days Flow- (1/100
value cm) 43: 501 98 1068 24 100 98 Immersion
Stability (%> I.
405 29 550 25th 99 101 ^; 3001 ' 3803 Stability <ko) 89 28 101 1965 2275 ' 17 ' 10 TlIeB- (I / IOO
value cm) 66! 100 22nd 22 ' 103? 99 "Immersions
stability (%) 105 98 ί

S \ am ^ Ibt ^ mm ^ m - -

Note 1) Stability test samples are immersed in water for 30 minutes at 30 ° C. 2) Samples of the Iraraersionsstabilitätstests (immersion stability test) are immersed for 48 hours in water at 30 ⁰ C and the immersion or dipping stability as folot berechnett
constant stabilityJtSt% = stability of the sample, 48h. in water elnget-arffc

Stability of the sample not immersed in Steser ^{x ltx>}

3} O% immersion stability means that the test is due to degradation or decay a sample immersed in water cannot be effected.

Table Ils properties of mined granite

Test column

values

Particle size 20 mm 100 (passed 13 ram 99 Particles%) 5 mm 93 (percentage Ge 2.5 mm 78 weight ratio 0.6 mm 42 nis) 0 _f 3 mm 30th 0 f 13 mm 25th 0.074 mm 21 Consistency test Liquefaction
border 32 Plasticity index 12.5 sealed optimal Water content (%) 11

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Table III: Results of the Marshal Te ^ t of Mixtures with dismantled unit at 30 ° C

Test no.

CD CO OO

Type of aggregate

A-I

Mixture of asphalt-resin-asphalt (%) 9O

Emuisionsgemscn (calculated as

Residues) resin (%) 10

Miscn ratio reduced Aggregate to emulsion mixture (emulsion mixture calculated as residues)

degraded

t Cka) 100

Emulsion mixture (kq)

Marshai test (30 ° C)

10

A-2

90

10

100

Hardening Stability (kg) 262 276 280 3 days Flow value. 1> 28 29 Immersion
stability (%) 95 98 96 Stability (kg)
484 573 481 Hardening
7 days Flow value
(1/100 cm) 26 27 29 Innnersionsta-
bilitat (%) 98 101 99 Stability (ko) 626 630 563 Hardening
21 days Flow value
(1/100 cm) 26 25th 24 imme rsionssta-
bility ■ (%) '■ 1OO 99 103

Sermerkuncr: Stability and immersion stability tests are under the same Conditions effected as indicated in the note on Table I.

Table IV - Properties of the degraded aggregate

Type of aggregate Properties of the aggregate

A-I A-2 A-3 Lumps of silica

Particle size
(particles passed through, percentage weight ratio

25 well loo loo loo 2o 98 95 94 13th 89 77 69 5 69 52 37 2.5 · 55 39 25th o, 6 23 17th Io o, 3 14th Io 6th o, 15 Io 8th 4th o.c-74 8th 6th 3

sealed optimal water content (%)

6, 0

5, ο

4.8

Note: river sand is used for the test Pass particles through a 2.5 mm sieve.

Powdered limestone is used for the test, the particles of which pass through a 0.074 mm sieve go through

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- 91
309817 / Table V: Marshal test results of mixtures with asphalt
resin (t) (kg) abstxt see ΠΊ'λμίΙ ^ bed OI
-J Test no. Aggregate (kg)
Emulsifiers! Sch (kg) (l / loo cm)
(kg) 4th 1 • O Mix ratio of asphalt
Hara emulsion geraisch (be
calculates as arrears) stability (l / loo cm) 8o
2o loo
O Crushed mixing ratio
Aggregate to emulsion mixture
(Calculated emulsion mixture
as residues) Flow value
Immersions
stability
stability (%) loo
5 loo
5 Hardening Float value (kg) 129 unaogllch 3 days
Marshal test
Hardening Immersion
• tabl Uta t (l / loo cm) 2t
»5
257 ■
W.
B. (6o c)
*-' 7 days STAHLITY Ct) 27 B. Flow value t « m Hardening Immersion
stability 486 149 21 days 27 19th 96 73

Notice 1. Profeen of the immersion stability tests are carried out for 48 hours. Feel 60 ° C in

immersed. .

2. Impossible means that the marshal test is due to destruction

which 30 min. was immersed at 6O ° C in water, does not cause

can.

Table VI: Results of the Marshai test of mixtures with degraded aggregate at 60 ° C

test

of asphalt mixture as residues)

Ml * chv © rixältnis from aerkiei- smr & eea. ! Aggregate to Emu Is Ions- «psitsch (Smalslonsgesiisch calculated as residues)

§ £ & rten

■ '3 days

Karshai T & mt

Hardening 1 day ©

«Types 21

asphalt

Unit (A-I) (kg)

Emulsionsgemlsch C'sf)

etabllltäts

9o Io

stability (kg) 216 riiftfeiBBrt (1 / lQO CSIS 3o ISEaersioas-
stability (Si 32 stability (kg) 314 Fleeing value (1/1 oo ca; I 2? ImsJersions-
atabtlty (ft) '94 stability • Ckg} β27 Flow value. (l / loo. cm) 2G IlBSiersions-

loo .3

Note: 1. Samples of the insolvency stability tests are kept for 48 hours at € o C in

Immersed in water, 2 »" oniadglich '''Ibedsutet. The same as in Besagrkss & g 2nd d © r

The invention includes “bituminous ingredients Imiltionsgemieoh for flooring! welohea synthetic hard of the styrene type, homogeneously diluted, contains a synthetic hardener emulsion or solution of the styrene type bituminous emulsion added and the emulsion obtained is homogeneously mixed.

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Claims (3)

1. BlttifflifibB © tailsicm iftar Use ala Biader in flooring compounds »gekanaaeiehhöfc through an LBiung bsi?» an emulsion of a Harspolymföröii A @ s Sfcyroltyps> t # © leh © sti & ®r bituminous emulsion ls \ H @ ng @ n of 3 to 30ΰ _# bazof © »on the weights of the solid MteksfcänÖQihiasugesetgt. 2. Bituminous emulsion according to claim 1, characterized by a solution or an emulsion of a resin polymarene of the styrene type, wob © i daa polymer © polystyrene, rubber compatible polystyrene, styrene-butadiene copolymer, styrene-methacrylate or acrylonitrile-butadiene-styrene -Copolymer, and where the solution is added to the bituminous emulsion and mixed with it to produce a homogeneous binder, 3. Bituminous emulsion according to claim 1, gakennzaich »net by a solution or emulsion of a Harapolysitaren of the styrene type, which in at least one of the solvents toluene; Xylene or naphtha is dissolved, this solution being added to the bituminous emulsion and mixed with it to produce a homogeneous binder. 309817/070 7