1.Highway seam sealant main component is a composite material
2.the main feature is a high elasticity
Sealant Pouring glue Introduction: 1.Highway seam sealant main component is a composite material, the main feature is a high elasticity in the low viscosity under high temperature and low temperature of the modified bitumen and the thermoplastic rubber. Based on the use of ambient air temperature, the product is divided into cold low temperature type, ordinary temperate, hot temperature type; according to the heating mode, the product can be divided into direct heating and indirect heating type. 2.Pouring glue select: Deal with the cracks in the asphalt pavement, select a suitable type of pouring glue is the key. According to different regions and different climatic conditions and cracks in the road characteristics, choose the pouring glue as a pavement crack repair material. 3.Highway irrigation seam glue Performance: The pouring gel as solid modified bitumen and thermoplastic rubber composite materials, hot melt quick, strong adhesion, and has a good resistance to deformation recovery properties. Pouring plastic compared with other types, the type having a low consistency, easily penetrate the various cracks and other characteristics. In the summer, the high-temperature softening point up to 96 °C; in winter, its resistance to low temperature of -23 ° C up to approximate and therefore more suitable for temperate environment span a large temperature difference 4.Seam glue mechanism: In a high temperature of 193 °C liquid pouring rubber with asphalt pavements permeation fusion, after cooling to produce high bond strength, and to rely on the strong elastic contraction and cracks up elastically deformed, to always maintain its sealing action.
Pouring glue construction: 1. the pre-construction preparations (1)calculate the amount of material As a rule of thumb, when pouring glue in the provisions of the construction temperature, 1kg sealant can seal a long 8m 1cm wide and deep 1cm cracks. Estimation method: width (cm) × depth (cm) x length (m) x 0.12 (kg) For example: a wide and deep are 2 cm longitudinal cracks of up to 15 m, pouring glue dosage of 2 × 2 × 15 × 0.12 = 7.2 kg (2) heat pouring glue Pouring glue in the heating of the thermal reactor compartment, the heating and melting, until it reaches the specified construction temperature of 193 ° C. Note: in the heating process of pouring glue, it is necessary to ensure uniform heating medium oil or hot air heating equipment recommended to avoid pouring glue charred phenomenon. Therefore, the when no similar thermal reactor to ensure that the material is heated evenly equipment, can not be used the heated asphalt wok or other open flames pouring glue direct heating equipment heating. 2.the construction process and requirements (1) closed to traffic To ensure construction safety, traffic control should be carried out in accordance with the provisions of the traffic control of road maintenance operations on road maintenance technical specifications, placing the tapered standard and mobile logo car and designated persons responsible for directing traffic and with the construction progress timely mobile construction signs. (2)slotted , Adjusting the width and depth of the good slotting machine in accordance with the notch size of the design, and then slotted job. Fracture changes in the construction process in a timely manner to adjust the notch size and meet the minimum design requirements. (3)Qing seam Dust and debris cleared within the range of the tank and on both sides of at least 5cm blowing with compressed air gun or forest fire extinguishers clean. (4)preheat Pouring the glue should be used when the road surface temperature exceeds 4 ° C. Low temperatures may reduce the stickiness too many cracks at the water gas, if less than 4 ° C, you can use the appropriate method of heating in order to guarantee the achievement of the minimum requirements limit. If required in the case of lower than 4 °C sealed, then must ensure crack sulfate, anhydrous, and debris. Pouring glue temperature should be maintained in a safe heating temperature. Pouring glue should be professionals inspection to ensure the stickiness. (5) pouring Calibrating the pressure with pouring terminal with pouring glue reached 193 °C nozzle pouring glue evenly poured into the tank. (6)conservation Pouring pouring glue, you can not immediately open to traffic, the traffic must be open in the case of pouring glue cooled sufficiently. The general cooling time of 15 minutes, the specific implementation, flexibility, according to the temperature conditions. 3, construction points to note (1) construction pouring glue temperature should reach 193 ° C, but can not exceed 204 degrees Celsius. (2) the notch size should meet the minimum design requirements, the width ≥ 1cm depth ≥ 1.3cm. (3) before pouring, holding tank and absolutely clean on both sides. (4) the construction of the road surface temperature should be maintained at 4 °C, otherwise it should be preheated. (5) open traffic before pouring glue should ensure sufficient cooling time.
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