Shandong Jining asphalt pavement maintenance agent Description

Asphalt Pavement Maintenance agents - activating repair, comprehensive care, so that the road instantly Hull, extend the pavement life a product introduction 1, the product uses asphalt pavement maintenance agent, it is a high-tech way of preventive maintenance of new materials. mainly in asphalt pavement "sub-healthy" state of preventive maintenance, spraying asphalt concrete surface, infiltration, activation, repair, restore aging asphalt, restore the original performance enhancement, stop aging asphalt, play a comprehensive preventive maintenance, to avoid the further spread of the disease highway, extend road life, while having beautifying cosmetic renovation of roads and fast results, so the road is "fundamentally changed overnight." 2. Physical and chemical characteristics Physical state: viscous oily dark brown liquid, flammable. Stability: long-term storage and under normal conditions of transport. Risk phrases: Do not swallow and inhale, gets into the eyes, rinse immediately with plenty of water and taken to hospital. Do not use open flame, petroleum products for allergy sufferers do not touch. Storage: Do not store in high temperature or direct exposure to the sun, away from fire and sealed storage. Shelf life: 12 months 2 Product performance 1, infiltration of activated repair restore aged asphalt asphalt pavement maintenance agent containing a polymer activating substance, can fully penetrate the pores and tiny cracks of asphalt concrete, asphalt aging of infiltration, activation, repair and reduction, increase bituminous, asphalt restore the original performance, prevent aging asphalt pavement, thus extending the life of the road. 2, bridge the rift stable aggregate asphalt road aging, due to asphalt pavement oil becomes rough and altogether lost, accompanied by some minor surface cracks will appear, at this time the road surface becomes loose aggregate, permeability coefficient is too large, anti- disease is low, if not in time to jump off and soon chunks of crack. After the asphalt pavement maintenance agent, can complement and glial activation asphalt, a graft copolymer produced by infiltration of asphalt concrete, cross-linking, make plasticity and enhanced flexibility, so that the original surface of loose aggregate rejoin become firm; by infiltration and sealing, cracks have appeared in the bridge again, to enhance its water resistance, the infiltration reaction usually within 2 days to achieve the best results. 3, waterproof corrosion UV bridging the rift formed while the face layer waterproof layer, greatly enhancing the waterproof performance of asphalt pavement, the use of permeability coefficient can be maintained for a long period of time is "0"; curing agent to acid, alkali, salt and other chemical etching medium has a strong resistance and UV resistance, it can be effective against a variety of fuels, solvents and other substances of asphalt pavement deicing salt corrosion and UV damage to asphalt pavement, maintain long-lasting pavement softness and durability . 4, beautification road timeless curing agent, can be very long time to maintain asphalt dark, oily, improve whitening will appear after the asphalt road aging, dry phenomenon, greatly improved aesthetics, for a large celebration of the city quick cosmetic tourism road renovation, so the road is "fundamentally changed overnight." At the same time play a comprehensive preventive maintenance, effectively alleviate premature oxidation, cracking, shrinking and separation and loose pavement diseases; to avoid further spread of the disease highway; reduce small repair, overhaul delay, integrated to improve the life of the asphalt road. 5, a large number of simple and reliable performance proved that no negative impact on construction depth, the friction coefficient of the road and other roads index after curing agents may be suitable for highway, municipal roads and road maintenance each grade; within two hours after construction Traffic can be restored, no long closed to traffic, mechanical or manual construction can scratch, without complex technical limitations and operating procedures, is a mature, efficient, reliable, viable path preventive maintenance technology. III. Technical indicators asphalt pavement in order to study the practical effect of the curing agent technology, our joint and conditional use of units commissioned research institutes and industry, on the part of sections of track conservation research and assessment. Take an intuitive visual method and test comparative law, according to the "asphalt pavement design specifications" (JTG D50-2006), "asphalt pavement construction specifications" (JTG F40-2004) and "Asphalt Pavement Technical Specifications" (JTJ073. 2-2001) provides that, combined with the technical characteristics of asphalt pavement maintenance agent selected asphalt index, the friction coefficient, permeability coefficient, aging factor and disease assessment and other indicators, in a period of time before the effects conservation and contrast after curing as a conservation effect Evaluation. Analysis and evaluation of these indicators is an important part of the asphalt pavement maintenance agent product and technology research, as upgrade products, improve construction programs to improve the adaptability and maneuverability of an important basis. 1, before and after the pavement of a highway Conservation Monitoring Results Monitoring Project comparison before curing curing friction coefficient (BPN) 71 65 texture depth (mm) 0.48 0.44 permeability coefficient (ml / min) 27.2 0 2, Northwest conservation of a country road 24 months after the monitoring program to assess the situation before and after curing curing 24 months after the conservation area monitoring is not the same road Asphalt penetration index (dmm) 36.4 39.3 34.8 22.9 10 ℃ ductility sampling / cm 3.2 5.6 2.9 1.0 sampling softening point / ℃ 51.5 50.0 55.5 57.5 description of sampling diseases asphalt pavement has serious aging, crack, loose and other diseases, and the rapid spread of the trend. Aesthetics and performance has been greatly improved road, the road becomes oily, soft. Conservation has been no trace of rut parts, but not the conservation area and there are significant differences compared. Locally broken, cracks are more loose surface, color white, half the parts should dig bu overhaul. Observations pavement index permeability coefficient (ml / min) 35 0 35.2 43.6 field coefficient of friction (BPN) 50 47 47 44 site structure depth (mm) 0.8 0.7 0.7 0.7 3. Northwest province Road site protection 12 months after the assessment Monitoring of the project before and after curing curing 12 months after the conservation area monitoring is not the same road Asphalt indicators penetration (25 ℃ / 0.1mm) 55 71 60 52 sampling ductility (25 ℃ / cm) 37 39 29 20 Softening Point sampling / ℃ 45 44 45 47 Disease sampling has been described in the road crack, loose and other diseases, the color washed out. Aesthetics of the road, the road to bridge the rift. Compared to the conservation area and not obvious oily pavement. Cracks more loose surface, color white, need conservation. Observations pavement index permeability coefficient (ml / min) 27 0 25.0 30.0 field coefficient of friction (BPN) 69 65 64 64 site structure depth (mm) 0.48 0.44 0.44 0.45 4. Beijing-Tianjin-site for a comparative study of high-speed sampling asphalt monitoring project Conservation area asphalt bitumen shoulder part of monitoring methods penetration (dmm) 56.4 32.9 29 samples sent to the inspection station 25 ℃ ductility / cm 33.2 10.8 29 testing stations sampling send softening point / ℃ 55.5 57.5 29 send sample inspection station permeability coefficient (ml / min) 15.2 43.6 Self Test site friction coefficient (BPN) 74 75 construction site POST depth (mm) 0.7 0.7 POST scene summary indicators from asphalt, bitumen conservation sites was significantly better than the shoulder portion of the asphalt road surface friction coefficient and their two index data structure are basically the same, but there is significant improvement in permeability coefficient, indicating that this conservation can improve asphalt indicators, effective anti-aging asphalt to prevent water damage and disease spread, to the road surface friction coefficient and texture depth not significantly improved, but no negative impact. 5. The test section of an airport in December after a road test monitoring project indicators Ministry of Transportation test data 10 months after the tracking data Remarks spraying before spraying permeability coefficient (ml / min) 0 0 3.6 HZS-1 type friction coefficient (BPN) 65.2 64.6 65.0 HZS-1 type structure depth (mm) 0.65 0.67 0.65 HZS-1 summarizes the data display type, texture depth through technical improvements, after a slight increase in conservation, but 10 months later basically back to its original state, do not drop Large (because there is no trace data area is not conservation, can not come to the depth of the curing agent for construction contrast 10 months later, after tracking the focus of this data), but can be concluded that the depth of curing agents for road construction no negative impact. Friction coefficient decreases slightly after curing, but the decline is less than 1% can be ignored, even increased slightly more than 10 months after curing, for this reason it is just after spraying curing agent, a sharp point on the road has been covered aggregate , resulting in slightly lower coefficient of friction, opening a period of time after the sharp point exposed aggregate friction coefficient increased, still concluded curing agent for asphalt pavement friction coefficient no negative impact 6. Conclusions comprehensive index on the conservation section tracking and evaluation of asphalt pavement maintenance agent can be effective on the road asphalt infiltration, activation, repair, bridge the rift, waterproof, anti-corrosion, anti-UV, anti-aging, stable road aggregate, improve pavement performance, inhibiting the proliferation of the disease and prolong asphalt pavement life, on the road friction coefficient, texture depth no negative impact, but there is absolutely waterproof coefficient optimization role. In support of this new road maintenance technology is mature and feasible, there is a strong economic and social significance, it is a worthy application techniques. IV. Dosage 1, the basic requirements 1.1 material used asphalt pavement maintenance agent can be sprayed around 3㎡ per kilogram. 1.2 Preventive Maintenance section of the sub-health state best, if damaged, potholes, cracks and other diseases, to be treated and then using the product after curing. 1.3 Construction conditions: temperature should be at -30 ℃ - between + 50 ℃, rain and snow can not construction. 1.4 construction workers before construction understand the use of this material. 1.5 Construction machinery: mixer or hand mixing tool (hand drill modification), high pressure blowing apparatus, the bottom surface of cleaning tool, asphalt or bitumen sprayer sprinkle cars, the case of hand-scratch paint brush several construction need to. 2, the first pre-curing before processing site conservation pavement surface dust and other debris cleared out work surface, with high pressure hair dryer blowing clean, if loose parts together to clean up, do not work with water, if water should be first suck out water and dry before construction. 3, before the use of the material was stirred by mechanical or stir stick, special attention precipitate drums stir up the bottom of all, the case of winter construction, the mixing process can increase the flow of material, easier construction. 4, the construction method the stirred material or asphalt sprayer sprinkle portion car sprayed asphalt pavement construction case handmade knife, pour the material directly on the road, with roll-brush paint brush evenly, coating thickness Visualization road conditions may be, so as not to undermine its structure depth and friction coefficient appropriate. 5, health and traffic control temperature at -15 ℃ -20 ℃, the two to three hours to open traffic, drying time outside of this temperature range will be extended, but no more than four hours, before the surface of the unseasoned need completely closed to traffic, if conditions allow try to extend the opening time traffic helps improve material properties. V. Benefit Analysis of Asphalt Pavement due to the impact on the environment, climate, traffic load and other factors, there will be less elastic asphalt, aggregate exposure, slight cracks and other phenomena, on the surface seems to be is the good way, but actually has entered the "Asian healthy "state and the timely preventive maintenance, will make the asphalt pavement reply to a healthy state. At this point can often do not pay attention, and soon inevitably a variety of diseases, the need to carry out more large-scale maintenance and repair. In the tradition of Asphalt Pavement Maintenance and Repair process, commonly used to dig and fill resurfacing or milling process, a lot of old asphalt was abandoned, on the other hand, due to the large number of new materials, mining, processing, transport and other sectors will lead serious environmental damage and waste of resources. During the construction period, long lane maintenance time and increasing traffic demand has had a conflict, and some can not be guaranteed because of maintenance time, no time to deal with the disease, leading to more and more diseases, creating a vicious cycle. According to the US Surface authorities on preventive maintenance every dollar invested, you can save other conservation and renovation costs of $ 6--10. In the future highway maintenance, will gradually shift focus from maintenance for preventive maintenance, the use of cost-effective new technology of asphalt pavement preventive maintenance, the new product will be the benefits the country and beneficial move.