LT5820B - Adhesion component for asphalt mixtures - Google Patents

Abstract

The present invention relates to the ecologic, thermally stable and long-acting adhesion component for bitumen materials and the method of production thereof. Specifically the invention relates to the production of bitumen component, consisting frommixtures of amphipatic compounds, comprising lipophilic and hidrophilic compounds, oil mixtures and/or mineral mixtures and/or vegetable mixtures and/or animal preparations and/or synthetic mixtures and mixtures of aromatic and aliphatic hydrocarbons. Using this component, asphalt mixtures becomes thermally stable, ecologic and long-acting.@

Description

Technical field

The present invention relates to an eco-friendly, thermally durable and long-acting adhesive component for bituminous coatings and to a process for obtaining it. More particularly, the present invention relates to the manufacture of a bituminous component comprising mixtures of amphipathic compounds comprising lipophiles and hydrophils, mixtures of oils and / or mineral and / or vegetable and / or animal and / or synthetic mixtures and mixtures of aromatic and aliphatic hydrocarbons.

State of the art

So far, the preparation of asphalt mass from a mixture of lipophilic (hydrophilic) asphalt and hydrophilic mineral has been the main problem: poor adhesion of components, which makes the road surface unstable.

One of the main reasons for this deterioration of the road surface is that the rubble and the asphalt mix lose their bonding properties. There are several reasons for the separation of broken grains from asphalt:

(a) water entering invisible cracks in asphalt and rubble,

(b) the movement of water between the asphalt and the rubble,

(c) water, which forms a spontaneous emulsion with asphalt and reduces adhesion between the chippings and the mixture,

(d) water which penetrates and increases the capillary pressure in the voids,

(e) Effect of tire pressure on car tires, which results in cyclical loading and hydrostatic pressure leading to water penetration into empty cavities.

Various additives are used to increase the adhesion properties of asphalt mixtures to rubble. Increasing the adhesion of the aggregate to the crushed stone is very important during production as well as during mineral-asphalt paving, where well-aggregated aggregate, for example, reduces asphalt concrete wear, accelerates the aggregate, facilitates coating and compacting of asphalt layers. All of the listed benefits of using an adhesive component allow you to save material, energy and lastly money and prevent adverse effects on the natural environment.

Many publications describe ways to improve the performance of bituminous mixtures. To implement these techniques, new technologies have been developed to improve the basic properties of materials for the production of mineral asphalt mixtures using various additives.

One such additive is an adhesive, which increases the adhesion of asphalt to crushed stone. Commonly used compounds are amines, amino acid salts, fatty amines, polyamides, alkoxides, and alkylamines. The second group of compounds used to improve this property are various silanes and their derivatives. Hydrated lime is often used as a mineral to increase adhesion.

Polish patent no. No. 184043, which utilizes an adhesive additive consisting of high boiling oils, polyoxyethylene alkyl amines, SBS thermoplastic polymers, and polyamides of alkyl amides.

U.S. Pat. No. 1,840,443, which describes an adhesive obtained by reacting epoxy compounds with phosphoric acid or partially from phosphoric acid esters, is known. Using this solution, an additive was found which gives the rubble good coverage of the asphalt.

There is a known US patent US3714109, which describes silanes as an asphalt adhesion enhancing material. However, the adhesive properties of this material are lower than those of the component of the present invention.

There is a known US patent US4743304 which uses the following additives: amine derivatives, polyamides, amide amines and cement additives. Portland cement is added to the aggregate to improve the performance of the mineral asphalt mix and mix with the asphalt by adding an adhesive additive. However, the method of manufacturing this additive is quite complex and expensive.

Polish patent no. 165031, which discloses as a coupling additive the reaction product of fatty diamines and methyl chloride, wherein the ratio of diamines to methyl chloride is 1: 2-4.

All patents mentioned above use chemicals. The main difference of the present invention is that natural mineral, vegetable, animal materials are used and therefore the adhesive component of the present invention has ecological properties.

The essence of the invention

An environmentally friendly, thermally durable and long lasting adhesive for bitumen coatings has been developed. The adhesive component is intended to improve the adhesion of the asphalt used in mineral asphalt mix (MMA) to the mineral aggregate and thereby increase the durability of the road surface. Mineral asphalt mix is made from mineral material 92-97% by weight and asphalt mass. Additives that improve the adhesion of the asphalt to the asphalt are used to keep the aggregate well covered with asphalt. Asphalt with adhesive component increases the durability and durability of the road surface.

It was unexpectedly found that asphalt additive with very good properties can be obtained using amphipathic materials.

The adhesion component consists of a mixture of amphipathic compounds (60-100%), a mixture of oils (10-40%) and a mixture of aromatic and aliphatic hydrocarbons (1-20%).

The structure of the amphipathic compounds contains lipophils which are very well asphaltic and hydrophilic which binds well to mineral aggregates, which are mainly contained in the mineral asphalt mixture.

The blend of oil fractions and the mixture of aromatic and aliphatic carbohydrates allow the whole combination to be stabilized.

The lifetime of the road surface covered by the adhesive component is very important. The use of an adhesive in a mineral asphalt mixture increases the resistance to water and frost, as the chips are less moisture absorbent.

The adhesive component used in the production of asphalt is an amphipathic compound consisting of the residues of alcoholic compounds, phosphoric acid residues and fatty acid residues.

The adhesive component is characterized by the combination of amphipathic compounds having an alcohol class of compounds. Most preferred of these is trihydroxyl alcohol, preferably glycerol or glycerol.

The adhesion component is characterized by a combination of amphipathic compounds having a structure of bound unsaturated and / or saturated aliphatic fatty acids (Cs to C36). Preferred of these are surištosios unsaturated and / or saturated aliphatic fatty acids (C12 to Cl _8).

The adhesive component is characterized by the combination of amphipathic compounds, which structure contains phosphoric acid compounds linked to an ester compound and another polar compound. Most preferred of these are ethanolamine, choline, serine, inositol.

Preferred implementation

The boiling method was used to determine passive adhesion. Add 0.8 g of asphalt to the porcelain evaporator and heat to 140 ° C while heating 30 g of crushed stone. Once removed from the dryer, the chippings are poured into an evaporator and mixed with a rod until all the grains are covered with asphalt. Transfer the wrapped chippings to a test tube and leave to cool. Subsequently, distilled water is added to the sample and heated to boiling point for 10 minutes. Boil the water slowly boil for 3 minutes. The water is then drained and the sample transferred from the tube to the paper. After the sample has dried, it is evaluated visually. The amount of asphalt remaining (not washed from the rubble) is estimated as a percentage.

Examples of obtaining the adhesion component

1,2,3 examples

Add 90 g of amphipathic compound and 10 g of heavy hydrocarbon fraction to reactor J. The reactor contents are heated to 130 ° C and heated with stirring for about 0.5 hours until the sample is homogenized. The properties of the adhesion component thus obtained are given in Table 1.

table. Percent adhesion test results,% adhesion.

Comparative asphalt {without adhesion materials) 0.3% by weight adhesion component Example 1 0.4% by weight adhesion component Example 2 0.5% by weight adhesion component Example 3 Basalt 45 75 85 100 granite 20th 70 85 98 Porphyry 5 55 85 95 The limestone 55 80 90 98

Examples 4, 5, 6, 7

The reactor was charged with 90 g of amphipathic compound and 10 g of hydrocarbon fraction containing C25 carbon atoms. The reactor contents are heated to 130 ° C and heated with stirring for about 0.5 hours until the sample is homogenized. The properties of the adhesion component thus obtained are given in Table 2.

table. Chip adhesion test results showing good thermal stability of adhesion component,% adhesion.

Comparative asphalt {without adhesion materials) 0.3% by weight adhesion component Example 4 0.3% by weight adhesion component Example 5 0.5% by weight adhesion component Example 6 0.5% by weight adhesion component Example 7 Basalt 45 90 98 100 70 granite 20th 80 80 90 70 Porphyry 5 95 80 90 75 The limestone 55 98 98 90 90 After RTFOT After 72h at 180 ° C

8, Example 9

The reactor was charged with 72.9 g of amphipathic compound, 18.2 g of light hydrocarbon fraction up to C10 and 9.1 g of heavy hydrocarbon fraction. The reactor contents are heated to 140 ° C and heated under stirring for about 0.5 hours until the sample is homogenized. The properties of the adhesion component thus obtained are given in Table 3.

table. Percent adhesion test results,% adhesion.

Comparative asphalt {without adhesion component) 0.4% by weight adhesion component Example 8 0.7% by weight adhesion component 9 example Basalt 45 80 100 granite 20th 50 95-98 Porphyry 5 40 95-98 The limestone 55 85 100

In order to illustrate and describe the present invention, descriptions of preferred embodiments are set forth above. It is not an exhaustive or limiting invention to determine the exact form or embodiment. The description above should be viewed as an illustration rather than a limitation. Obviously, many modifications and variations may be apparent to those skilled in the art. Embodiments are selected and described so that those skilled in the art will best understand the principles of the invention and their best practical application for different embodiments with different modifications suitable for a particular application or application. The scope of the invention is intended to be defined by the appended definition and its equivalents, in which all the foregoing terms have the widest possible meaning, unless otherwise stated. It will be appreciated that the embodiments described by those skilled in the art can make changes within the scope of the present invention as defined in the following definition.

Claims (10)

DEFINITION OF INVENTION An adhesive component for asphalt, characterized in that it consists of amphipathic compounds, i.e. mixtures of lipophilic and hydrophilic substances, mixtures of oils and / or of mineral and / or vegetable and / or animal and / or synthetic origin and mixtures of aromatic and aliphatic hydrocarbons. 2. The adhesive component of asphalt according to claim 1, characterized in that it is an amphipathic mixture having in its structure an alcohol residue, a phosphorus residue and a fatty acid residue. 3. The adhesive component of asphalt according to claim 2, wherein the alcohol in the amphipathic mixture is trihydroxyl alcohol; the phosphorus residue is a compound of phosphoric acid; the balance of fatty acids are unsaturated and / or saturated aliphatic fatty acids (C ₈ to C 3 _6). 4. The adhesive component of asphalt according to claim 2 or 3, wherein the alcohol in the amphipathic mixture is a trihydroxyl alcohol, preferably glycerol or glycerol; the phosphorus residue is a phosphoric acid compound, preferably ethanolamine, choline, serine, inositol; the balance of fatty acids are unsaturated and / or saturated aliphatic fatty acids (C ₈ to C 3 _8), preferably an unsaturated and / or saturated aliphatic fatty acids (C12 to Cl _8). 5. The adhesive component of asphalt according to claim 1, characterized in that it consists of amphipathic compounds, i. Mixtures of lipophilic and hydrophilic compounds, mixtures of oils and / or mineral and / or vegetable and / or animal and / or synthetic mixtures and mixtures of aromatic and aliphatic hydrocarbons with a content of 0,1 to 10% by weight, based on the total weight of the asphalt. 6. The adhesive component of asphalt according to claim 5, characterized in that it consists of amphipathic compounds, i.e. mixtures of lipophilic and hydrophilic compounds, mixtures of oils and / or mineral and / or vegetable and / or animal and / or synthetic mixtures and mixtures of aromatic and aliphatic hydrocarbons with a content of 0,1 to 10% by weight, preferably 0,5 -1% by weight of the total weight of the asphalt. 7. The adhesion component of asphalt according to claims 1-6, characterized in that it comprises 60-100% by weight of the amphipathic mixture, 10-40% by weight of the oil mixture and 1-10% by weight of the aromatic and aliphatic hydrocarbon mixture by weight. Adhesive component for asphalt as claimed in any one of the preceding claims, characterized in that it comprises 60-100% by weight, preferably 80-100% by weight, of the amphipathic compound mixture based on the total weight of the asphalt. Adhesive component for asphalt according to any one of the preceding claims, characterized in that it comprises 10-40% by weight, preferably 10-20% by weight, of the oil mixture based on the total weight of the asphalt. Adhesive component for asphalt as claimed in any one of the preceding claims, characterized in that it comprises 1-10% by weight, preferably 5-10% by weight, of the mixture of aromatic and aliphatic hydrocarbons, based on the total weight of the asphalt.