Second order reactive waterproof coating bridge deck waterproof adhesive

Description :

　　The two bridges on Bailuzhou Road are more beautiful and comfortable than before. Recently, the north-south bridge of Bailuzhou Road (Shifu Avenue), which has a history of 23 years, has been repaired and upgraded, receiving praise from many citizens. Maintenance and upgrading include anti rust coating of beams and bridge piers, replacement of expansion joints, renovation of drainage systems, replacement of bridge pier light strips, etc. Among them, the most difficult task is to update and replace 48 bearings, which is equivalent to replacing the "joints" of the bridge and making it safer. This is still among the municipal bridges in Xiamen. During the surgery, the traffic on the bridge deck was not interrupted. How did the engineering personnel achieve this?

　　The support function serves as a load-bearing and pressure reducing function for human joints

　　What is a bridge bearing? It is reported that bearings are devices installed on bridge piers (abutments) to support the upper structure of the bridge on the top surface. Its function is to fix the upper structure to the bridge pier, bear various forces acting on the upper structure, and reliably transmit them to the bridge pier. Under the action of load, temperature, concrete shrinkage and creep, the support can adapt to the rotation and displacement of the upper structure, allowing the upper structure to deform freely without generating additional internal forces. Visually speaking, bearings are like the joints of a bridge, capable of bearing, buffering, and reducing pressure.

　　AMP-100Second-order reactive typeBridge deck waterproof coating

　　[Product Overview]

　　AMP-100 second-order reactive bridge deck waterproof coating is a revolutionary bridge deck waterproof coating that has been widely used in road and bridge waterproofing projects nationwide due to its excellent performance and mature technology. This product is a single component viscous liquid made by adding petroleum based reactive substances to a blend of natural asphalt and petroleum asphalt. Petroleum based reactive substances undergo copolymerization physical and chemical reactions when fully exposed to reactive gases such as O2 and SO2 in the air at a certain specific surface area, which is the first-order reaction stage of the product; At this stage, a certain strength of elastic adhesive material is generated, which can prevent construction vehicles and asphalt concrete paving equipment from damaging the waterproof bonding layer. During the process of laying hot asphalt concrete, the elastic gel waterproof bonding layer reacts at high temperatures, and the large aggregate is embedded in the elastic waterproof bonding layer to form shear bonds, playing a good role in bonding and shear resistance. After the paving is completed, the second-order reaction of the product is completed, forming a higher elastic-plastic waterproof bonding layer.

　　[Product Features]

　　(1) Reactive type: It has the unique one-stage and two-stage reaction process of AMP-100 second-order reactive bridge deck waterproof coating, which forms a highly elastic and plastic waterproof bonding layer after curing, and has excellent high and low temperature resistance performance;

　　(2) Excellent waterproof effect: After use, the product can play a waterproof role in stages during the first-order and second-order reaction processes.

　　(3) Curing effect: It can penetrate to a certain depth on the surface of cement concrete, fully react with alkali substances in cement concrete to form a nail effect.

　　(4) Strong bonding performance: The bonding and shear forces with cement concrete or asphalt concrete can reach over 1.0MPa, effectively preventing the occurrence of pavement delamination, displacement and other diseases.

　　(5) Construction simplicity: It can be sprayed or rolled, with simple construction, short construction period, and strong puncture resistance.

　　[Scope of Application]

　　Suitable for waterproofing projects such as highway bridges, urban overpasses, and culverts, it can prevent steel corrosion caused by water seepage on concrete bridge decks and improve the service life of beams.

　　Construction Technology

　　1. Base surface treatment before construction

　　Newly built concrete bridge decks should have a minimum of 7 days of curing period, and it is recommended to use sandblasting and roughening methods for treatment.

　　(1) Firstly, remove any harmful attachments on the road surface, such as sand particles and debris. Special treatment should be applied to areas with oil stains, which can be dissolved in solvents;

　　(2) After the road surface is cleaned, a sandblasting machine is used for sandblasting treatment, with the aim of removing floating slurry and some loosely attached debris from the road surface, while ensuring that the cleanliness and roughness of the road surface meet the requirements;

　　(3) You can use a hair dryer to completely blow and dry the interface.

　　2. Requirements for Base Surface Treatment

　　Cement concrete should have a dry and clean surface without any floating slurry or pollutants. The surface should not be loose, peeling, hollow or severely cracked, and the interface should be completely dry.

　　3. AMP-100 spreading

　　(1) Material dosage: 0.8kg-1.2kg/㎡ (manually coated twice).

　　(2) After the interface is cleaned and completely dried, the construction of AMP-100 can be carried out. Two methods can be used: manual coating and spraying.

　　Artificial coatingBefore construction, pour it into a container of appropriate size, stir gently for 3-5 minutes, and have the operator evenly apply it to the cement concrete or other treatment surface with a roller. It is generally recommended to use this method.

　　Spraying constructionWhen the area is not large, manual handheld spray gun construction can be carried out, and the operator can hold the spray gun and evenly apply it. When the area is relatively large, an asphalt distributor truck can also be used for spraying, but the spraying amount must be strictly controlled and the spraying must be uniform. Attention, when using spray construction, the pipes should be cleaned in a timely manner after spraying to avoid blockage. At the same time, when using large buckets, they must be stirred evenly to prevent air from pouring in.

　　Note:

　　To achieve good construction results, AMP-100 second-order reactive bridge deck waterproof coating needs to be implemented in two stages. The time interval between the next and second implementation at room temperature should be 4-8 hours. After AMP-100 construction, the asphalt layer can be constructed 12 hours later.

　　【 Precautions 】

　　(1) Construction is strictly prohibited in rainy and snowy weather;

　　(2) The waterproof layer construction can only be carried out after the new cement concrete is cured and qualified;

　　(3) After the waterproof layer is laid, it is strictly prohibited for vehicles to drive or personnel to step on it before it is fully cured. The waterproof layer should be protected to prevent moisture and pollution;

　　(4) Smoking and construction are strictly prohibited during periods of strong winds.

　　[Reference Dosage]

　　When the base surface is flat, the theoretical dosage is 1.2-1.5kg/㎡ (twice), and the specific dosage depends on the situation.

　　[Packaging Specifications]

　　50KG/barrel

　　[Execution Standards]

　　According to the requirements of JT/T535-2004 and JC/T975-2005 "Water based Asphalt Waterproof Coatings for Roads and Bridges" standards

　　Storage and transportation

　　1. This product is non-toxic and non flammable, and can be transported by general transportation methods;

　　2. The product has a storage period of 6 months and should be stored in a warehouse above 0 degrees Celsius. In summer, it should be avoided from direct sunlight.

AfterSalesService :

• Second order reactive waterproof coating