Background technology
Asphalt, as a kind of heat-sink material, reaches 0.85~0.95 to sunlight heat specific absorption, and bituminous pavement is the major cause that causes bituminous pavement excess Temperature to the high-absorbility of sunlight.Due to China most areas, the highest temperature in summer can reach 35 ℃~40 ℃, and under sunlight prolonged exposure, amount of heat is absorbed by bituminous pavement and accumulates in bituminous pavement, the temperature of bituminous pavement can reach 63 ℃~68 ℃, and makes bituminous pavement produce rut.High temperature is the most direct inducement that rut produces: high temperature makes the rheological property of pitch transform from visco-elasticity to plasticity, and stiffness modulus declines to a great extent, and its non-deformability sharply reduces, and just occurs serious rut under the effect of vehicular load.Pavement material circle extensively adopts modifying asphalt, uses high-quality to gather materials, adopt extruded aggregate grating, adds the high-temperature behavior that the measures such as anti-rut agent improve bituminous pavement at present, but due to the thermally sensitive intrinsic propesties of bituminous material, these measures fundamentally do not solve bituminous pavement high temperature rut problem yet.
Meanwhile, China's urban road form of mating formation mainly be take bituminous pavement as main, and the amount of heat that bituminous pavement is accumulated has seriously aggravated " tropical island effect " in city.And in the general measure that solves city " tropical island effect ", be to improve urban forest cover rate and expand meadow, water ground area at present, to change the state of city underlying surface, but city is a region that building height is intensive, road height is densely covered, the forest coverage in city etc. are difficult raising extremely.
And China's pavement of road mostly is grey or black, grey and black have calm effect to people's neural system, but watching for a long time dull grey road surface attentively can make officer's attention slow up, bring out fatigue, even drowsy, the danger that traffic accident occurs is increased.
Therefore, for Bituminous Pavement Wheel Rut Question, the single dull problem of " tropical island effect " in city and pavement of road color, be necessary to develop a kind of heat reflectivity that possesses, can reduce the caloric receptivity of bituminous pavement, greatly reduce bituminous pavement temperature, reduce asphalt pavement rut disease, alleviate city " tropical island effect ", beautify road landscape, improve the high-molecular compounded and modified color asphalt of heat reflection type of traffic safety, itself and certain compound heat reflection type chromatic bitumen mixture of making of graded aggregate are paved in road surface, play reflection, radiation solar heat, reduce bituminous pavement temperature, prevent asphalt pavement rut injury, reduce to a certain extent the effect of urban heat land effect simultaneously.
Summary of the invention
The object of the invention is to overcome above-mentioned shortcoming, a kind of high-molecular compounded and modified color emulsified asphalt of heat reflection type that can significantly reduce bituminous pavement temperature, minimizing asphalt pavement rut disease, alleviate city " tropical island effect " and beautify road landscape, improve traffic safety is provided.
Another object of the present invention is to provide the high-molecular compounded and modified color emulsified asphalt compound of a kind of heat reflection type.
For reaching the object of the invention, the present invention adopts following technical scheme: the high-molecular compounded and modified color emulsified asphalt of a kind of heat reflection type, it is characterized in that: the raw material that it comprises following weight part: 35~75 parts of light colour resin emulsions, 15~45 parts of resin aqueous emulsions, 1~5 part of near-infrared reflection pigment, 1~3.5 part of sericite in powder, 1~3.5 part, nano-far-infrared radiation powder, 2~10 parts, 0.4~0.5 part of dispersion agent and water, according to above-mentioned weight part, weigh various starting material, first to stirring tank, be added into light colour resin emulsion, resin aqueous emulsion and dispersion agent and water, open and stir, stir 3 minutes, then to stirring tank, add near-infrared reflection pigment (IR pigment), sericite in powder, far-infrared powder, stir 5 minutes, stirring velocity is 1000rad/min, last testing product uniformity coefficient and stability, stop stirring.
The above-mentioned high-molecular compounded and modified color emulsified asphalt of heat reflection type, is characterized in that: described light colour resin emulsion is made by the light colour Resin adhesive ramming material emulsification that possesses asphalt performance, is divided into cationic and anionic.
The above-mentioned high-molecular compounded and modified color emulsified asphalt of heat reflection type, is characterized in that: described resin aqueous emulsion is the macromolecule resin emulsion with light colour resin emulsion compatibility.
The above-mentioned high-molecular compounded and modified color emulsified asphalt of heat reflection type, it is characterized in that: described near-infrared reflection pigment adopts U.S. Xue Te (Shepherd) company, Jiangsu good fortune Lu (Ferro) company or Japanese many agates to obtain the near-infrared reflection serial pigment of (Tomatec) company, has another name called cold pigment.Described near-infrared reflection pigment is mixed by 1000 ℃ of above high-temperature calcinations by Multimetal oxide, raw material solid itself starts to react, metal ion and oxonium ion in raw material rearrange, form more stable spinel structure or the rutile-type structure of being similar to, make the pigment forming in infrared region, have larger reflection potential, to accounting for 50% near infrared ray in solar radiation, there is higher reflectivity, solar radiant heat directly can be reflected away, reduce the thermal absorption of brea bed, reduce the injury of high temperature to pitch.
The above-mentioned high-molecular compounded and modified color emulsified asphalt of heat reflection type, it is characterized in that: described sericite in powder has high radius-thickness ratio (up to more than 80), high temperature resistant, acid-proof alkaline, maskable uv-radiation, has excellent weather resistance, and can promote the resistance of aging of bituminous material.
The above-mentioned high-molecular compounded and modified color emulsified asphalt of heat reflection type, it is characterized in that: the infrared emittance under described nano-far-infrared radiation powder normal temperature within the scope of wavelength 2-18 μ m is up to more than 92%, the solar radiation that bituminous pavement can be absorbed exhales, reduce pavement temperature, reduce high temperature to the solarization of pitch and rut phenomenon; Preferred Shandong Origine Nanomaterial Engineering Co., Ltd., Shanghai Huzheng Nano-Tech Co., Ltd. and Shanghai nanotechnology and the nano-far-infrared powder of applying National Engineering Research Centre company limited.
The above-mentioned high-molecular compounded and modified color emulsified asphalt of heat reflection type, is characterized in that: described dispersion agent is to make color stuffing be dispersed in the auxiliary agent in water, and the dispersion agent of preferred water resistant type, as Nopcosant K, SN5040 and BYK190.
The high-molecular compounded and modified color emulsified asphalt compound of a kind of heat reflection type, it is characterized in that: the raw material that it comprises following weight part: 25~45 parts of the high-molecular compounded and modified color emulsified asphalts of heat reflection type, 0.08 part of pH adjusting agent, 0.10~0.30 part of thickening material, 5 parts, 50~70 parts of grating building stones and water, according to above-mentioned weight part, weigh various starting material, first in stirring tank, add the high-molecular compounded and modified emulsified bitumen of heat reflection type and pH adjusting agent, open and stir, stir 3 minutes, stirring velocity is 600rad/min, system pH is surveyed in sampling, hierarchy of control pH value is 12.50 ± 1.00, then to stirring tank, add thickening material, stir 5 minutes, system pH is surveyed in sampling, and hierarchy of control pH value is 12.00 ± 1.00, to stirring tank, add grating building stones again, stir 3 minutes, system pH is surveyed in sampling, and the pH value of the hierarchy of control is 11.00 ± 1.00, finally stop stirring, package encapsulation stores.
The high-molecular compounded and modified color emulsified asphalt compound of above-mentioned heat reflection type, is characterized in that: described pH adjusting agent is to make system present alkaline auxiliary agent, as NaOH, KOH and AMP-95 etc., and the pH adjusting agent of preferred water tolerance.
The high-molecular compounded and modified color emulsified asphalt compound of above-mentioned heat reflection type, is characterized in that: described thickening material is the auxiliary agent that can make system maintenance storage and the required viscosity of constructing, as alkali swelling type thickening material TT-935, TH-300A and A600.
Compared with prior art, the present invention possesses following beneficial effect:
(1) the high-molecular compounded and modified color emulsified asphalt mixture pavement of heat reflection type of the present invention can reduce bituminous pavement surface temperature more than 7 ℃ in summer under the highest temperature.
(2) high temperature makes pitch deliquescing, causes the supporting capacity of bituminous concrete to decline.Data shows, road table temperature is lower than in the situation of 55 ℃, and rut can be limited in the scope of several millimeters.When road table temperature is in the scope of 55~65 ℃, rut will be with the speed development of centimetre-sized.Pitch is along with temperature raises, and particularly, when pavement temperature reaches 50 ℃ of left and right, dynamic stability sharply declines.China most areas generally can reach 36~38 ℃ at the highest temperature in summer, bituminous pavement in this section of high-temperature time is very easy to produce rut, there is source investigation to show 5 ℃ of the every risings of temperature, dynamic stability will reduce 800~1000 times/mm, the present invention at least improves 1350~1650 times/mm of dynamic stability of asphalt, significantly improves the high-temperature stability of bituminous pavement and reduces asphalt pavement rut harm.
(3) the present invention is down to 0.25 to sunlight heat specific absorption from 0.9 bituminous pavement, according to .Pomerantz
Deng people, study knownly, this measure can reduce by 1.5 ℃ of urban atmosphere temperature.From above-mentioned data, can find out, the present invention reduces urban atmosphere temperature, alleviates city " tropical island effect " effect obviously.
(4) the heat reflection type Colorful Asphalt Pavement of making of the present invention has beautified road landscape, alleviated officer eye strain, improved Road safety performance, the traffic capacity of guide and instruct management traffic flow, increase road, red heat reflection type bituminous pavement can remind that officer is careful, enhancing your vigilance property, green heat reflection type bituminous pavement represents peace and quiet, can remind officer to put the light machine sound loudspeaker that do not ring.
(5) the antiskid pendulum value on the high-molecular compounded and modified color emulsified asphalt of heat reflection type of the present invention road surface is greater than 5BPN, and the frictional behaviour impact of road pavement is less.
In sum, bituminous pavement high temperature rut disease can be significantly reduced on the high-molecular compounded and modified color emulsified asphalt of heat reflection type of the present invention road surface, extend bituminous pavement work-ing life, alleviate city " tropical island effect ", beautify road landscape, improve Road safety performance, comprehensive cost is low simultaneously, formula is simple, production, easy construction.
Embodiment
1, the embodiment of the high-molecular compounded and modified emulsified bitumen of heat reflection type of the present invention
The formula table of the high-molecular compounded and modified emulsified bitumen embodiment of table 1 heat reflection type of the present invention (unit, kg)
The preparation method of the high-molecular compounded and modified color emulsified asphalt embodiment of above-mentioned heat reflection type:
(1) according to above-described embodiment formulating of recipe, require to weigh various starting material;
(2) under normal temperature, to stirring tank, be added into light colour resin emulsion, resin aqueous emulsion and dispersion agent and water, open and stir, stir 3 minutes;
(3) to stirring tank, add near-infrared reflection pigment (IR pigment), sericite in powder, far-infrared powder, stir 5 minutes, stirring velocity is 1000rad/min;
(4) testing product uniformity coefficient and stability, stop stirring.
2, the embodiment of the high-molecular compounded and modified Emulsified Asphalt Mixture of heat reflection type of the present invention
The formula table of the high-molecular compounded and modified Emulsified Asphalt Mixture embodiment of table 2 heat reflection type of the present invention (unit, kg)
The preparation method of the high-molecular compounded and modified color emulsified asphalt compound of above-mentioned heat reflection type embodiment:
(1) according to above-described embodiment formulating of recipe, weigh various starting material;
(2) under normal temperature, in stirring tank, add the high-molecular compounded and modified emulsified bitumen of heat reflection type and pH adjusting agent, open and stir, stir 3 minutes, stirring velocity is 600rad/min, and system pH is surveyed in sampling, and hierarchy of control pH value is 12.50 ± 1.00;
(3) to stirring tank, add thickening material, stir 5 minutes, system pH is surveyed in sampling, and hierarchy of control pH value is 12.00 ± 1.00;
(4) to stirring tank, add graded aggregate, stir 3 minutes, system pH is surveyed in sampling, and the pH value of the hierarchy of control is 11.00 ± 1.00;
(5) stop stirring, package encapsulation stores, and cleans stirring tank.