Corporate News

In recent years, rapid concrete repair materials have become more and more popular in application, and their application scope has been expanding. Where are they used? What is the difference between the initial setting time of quick repair materials and ordinary cement? What is the compressive strength of the pavement after using quick repair materials? Emergency repair treasure will let you know the use and characteristics of quick repair materials. The quick repair material can reduce the curing time and its compressive strength is 5 times that of ordinary cement, which varies according to the performance of the disease. 1、 Disease category of concrete surface disease: sanding, dusting, pitting, peeling, exposed gravel Pavement characteristics: concrete pavement within 3-5 mm

2022/09/16 16:36:16

In the golden autumn of each year, the peak period of road maintenance will be ushered in. Chongqing municipal administration, expressway and highway maintenance have all taken action to repair and maintain the K87500 bridge under their jurisdiction, strengthen the monitoring and management of maintenance quality, strictly implement the operating procedures for minor repair and maintenance of the ring expressway, and strengthen the dynamic monitoring and control of the bridge. Chongqing road maintenance has been using emergency repair materials for emergency repair all the time, so we are familiar with the construction process and mix ratio of emergency repair materials. The RT-2 super early strength mortar of emergency repair materials is used in the construction of bridge expansion joint damage, replacement of expansion joints, concrete cracking of bridge deck pavement and other diseases. It has the characteristics of quick setting and quick access

2022/09/07 19:40:48

In order to solve the situation that there are many functional departments involved in the management and maintenance of the road section within the jurisdiction, communication is not smooth or the emergency event processing is delayed, Guilin Highway and the local transportation bureau discuss, and the counties in the daily emergency maintenance reach a consensus to use rapid concrete repair materials for road emergency repair. Up to now, several county-level road maintenance units subordinate to Guilin Highway have carried out rush repair construction for various damages of bridge expansion joint concrete, as well as pavement pit and hole damages. The road maintenance effect is not only rapid, but also very ideal after repair. According to the maintenance personnel, it is possible to finish the first 30 minutes after the pouring of the RT-2 quick repair mortar

2022/08/26 20:29:45

The expansion joint at K1011860 of Xitong Expressway was damaged, which had a serious impact. Then, the concrete at this expansion joint was repaired quickly to ensure smooth high-speed driving in this section. The specific construction process of expansion joint emergency repair: 1) lineation - select the area to be repaired, arrange the traffic isolation facilities, and divide the repair area, including the damaged extension area (the damaged part extends outward about 2-3), into regular rectangular or square shapes. 2) Cutting - use a cutting machine to cut according to the line, the cutting height is about 3cm, and the reinforcement installed at the expansion joint cannot be cut.) 3) Chiseling - chisel the cement concrete in the cutting area with an air pick

2022/08/23 10:33:38

The diseases of cement concrete pavement, such as broken slab, subsidence and slab staggering, are common in road maintenance. The causes and diseases are as follows: 1) High temperature is not avoided in summer construction: continuous plate breaking; 2) Shrinkage crack: resulting in surface or irregular plate fracture; 3) Cold shrinkage cracking: it causes tensile deformation cracking, and the heat released during the hardening process of concrete is very large. The temperature rises by 1 degree, and the expansion per meter is 0.01mm. The temperature deformation is adverse to large areas of plates; 4) The seam is not cut in time. There are many other factors causing improper treatment of pavement base, so special attention shall be paid to road construction. How to repair the broken slab of cement concrete pavement? If you have produced

2022/08/19 19:05:17

"The paper has to come to the end of the shallow, absolutely know this matter to practice.". In order to better popularize and publicize the relevant knowledge of high-speed bridge maintenance, leaders of Nanchang Highway Maintenance came to the site of Yuganxin River Bridge to observe the rapid repair and maintenance of bridge and road diseases on the spot, and deeply understand the performance characteristics of the quick repair material of the emergency repair treasure. The daily maintenance of the bridge is mainly the diseases of the bridge deck pavement, such as pit, hole, broken plate, and the concrete pit, hole, and hole in the anchorage zone of the bridge expansion joint. These small diseases will not have much impact on the structure at first, but will have certain hidden dangers to the driving vehicles. Therefore, the daily small diseases of the bridge road are suitable for construction with fast materials

2022/08/17 17:44:47

Water damage is the main factor that causes pavement potholes. Water damage refers to the pitted surface, looseness, potholes, cracks and other pavement diseases of asphalt concrete or cement concrete pavement caused by water stripping and scouring. The joints of cement concrete pavement panels are generally set with reserved joints. Although the joints will be filled with joint materials, with the passage of time and the impact of the natural environment, especially this continuous heavy rain in Guangxi, the rain goes deep into the base with the joints. Under the effect of vehicle rolling, the gap between the base and the surface layer forms at the bottom of the plate, and under the effect of external forces, edge gnawing Cracks and other diseases continue

2022/08/10 11:32:16

Guangxi highway maintenance called, asked about the details of special materials for bridge maintenance, introduced the loose concrete in the anchorage area of the bridge expansion joint under the jurisdiction of Guangxi highway maintenance, asked which material is suitable for emergency repair treasure, and how long the logistics can arrive. "We send you the pictures and provide you with the data to help you calculate the amount of underflow". At the same time, we inquired about the construction process and mix proportion of the expansion joint repair material of the Emergency Repair Treasure, and learned that it is the concrete repair mortar recommended by Guangxi road maintenance peers. Emergency Repair Treasure RT-2 expansion joint quick repair material is composed of special cement, functional additives, high fiber and selected aggregates. Because the bridge resonance

2022/07/29 22:36:36

Lu'an, located in the west of Anhui Province, has a nickname of "Gaocheng", which is named because it is the cemetery of Gaotao, one of the four saints in ancient times. The anchorage concrete of bridge expansion joints is damaged due to the increase of overloaded vehicles. The maintenance of Liu'an Highway in Anhui Province attaches great importance to the existing problems of bridge expansion joints. The actual investigation and measurement of bridge expansion joints have been carried out, and a maintenance and repair plan has been made. The key to maintenance and repair is to find suitable repair materials for maintenance and repair. After investigation and weighing, it was decided to use repair treasure RT-2 rapid repair mortar. There are several reasons for the damage of bridge expansion joint anchorage concrete: 1) The bridge

2022/07/25 23:56:59

Linyi North Link Line is a convenient exit for the up and down Changshen Expressway in the north of the urban area. It is an important link line connecting Beijing Shanghai Expressway, Changshen Expressway and Tongsan Expressway. Since it was completed and opened to traffic in 2013, the daily traffic volume has been very high, resulting in high frequency of road and bridge damage and difficult maintenance. Under the condition of overload operation every day for the bridge that has served for nearly ten years, the maintenance personnel found that there were many 160 bridge expansion joints, the anchor concrete was damaged, and the steel beam was shaking during the patrol inspection last year. Since the conditions for long-term road sealing maintenance were not available, the maintenance personnel used asphalt cold patching to carry out the damaged parts

2022/07/24 21:42:29