Bridge expansion joint rapid repair material and preparation method thereof

• Main Authors: DONG HAIYANG, WANG XU, YANG SIBIN, JIA DONGWEI, WANG LIKUN, LIANG ZHITONG, JIN YUCHUAN, DOU WENBIAO
• Format: Patent
• Language: Chinese; English
• Published: 25.08.2020
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention relates to a bridge expansion joint rapid repair material and a preparation method thereof. The material is mainly composed of magnesium oxide, ammonium dihydrogen phosphate, red mud, rubber particles, emulsified asphalt, a coupling agent, fibers, polymer powder and the like, industrial waste red mud is thermally activated to participate in the reaction through the reaction of ammonium dihydrogen phosphate and magnesium oxide, strength is rapidly generated to serve as a cementing material, and the deformation capacity and bonding strength of the repairing material are improved byintroducing the rubber particles, the composite emulsified asphalt and the coupling agent. Compared with the prior art, the bridge expansion joint rapid repair material prepared by the method has theadvantages of full utilization of waste tires and industrial waste red mud, reduction of environmental pollution, low cost and the like, and the repaired expansion joint can rapidly open the traffic,and has the advantages of