During the construction of waterstop steel plate, the temperature of welding slag generated by welding operation is extremely high. Once it contacts the waterproof structure, it is easy to burn through the waterproof layer or damage the waterproof coating, seriously affecting the waterproof performance of the project. Therefore, taking effective measures to prevent welding slag from damaging the waterproof structure is a key link to ensure the quality of construction.
First of all, reasonable planning of construction sequence is an important means to prevent welding slag hazards. Before welding the waterstop steel plate, try to avoid laying waterproof membranes or applying waterproof coatings in advance. You can first carry out concrete structure construction, and then carry out waterproofing operations after the welding of the waterstop steel plate is completed and accepted. This step-by-step construction method can reduce the risk of direct contact between welding slag and waterproof structure from the root, and ensure that the waterproof layer works in an undamaged state.
Effective protection of the welding area is an essential operation. High-temperature resistant protective materials, such as asbestos cloth and fire blankets, can be laid on the surface of the waterproof structure below and around the waterstop steel plate. These materials can not only withstand the high temperature of welding slag, but also have a certain buffering effect to prevent welding slag from directly impacting the waterproof structure. At the same time, the coverage of the protective material should exceed a certain distance from the welding area to ensure that the splashing welding slag will not affect any part of the waterproof structure.
Optimizing the welding process is also an effective way to reduce the harm of welding slag. Using welding methods with low spatter rates, such as gas shielded welding instead of ordinary arc welding, can reduce the amount of welding slag generated. During the welding process, the welder needs to accurately control the welding parameters, maintain the appropriate welding current and speed, and avoid a large amount of welding slag splashing due to excessive current and too fast welding speed. In addition, choosing high-quality welding rods or welding wires can also help reduce the formation of welding slag.
Timely cleaning of welding slag is an important measure to prevent its accumulation and damage. During the welding process, the welder should carry special cleaning tools with him to clean up the fallen welding slag at any time. Especially after the welding is completed, the entire construction area needs to be thoroughly and carefully inspected to ensure that there is no residual high-temperature welding slag. Once welding slag is found attached to the surface of the waterproof structure, it should be carefully removed with appropriate tools immediately to avoid long-term heat damage to the waterproof structure due to residual welding slag.
Strict training of operators to improve their safety awareness and operating skills is also the key to avoid welding slag damage to waterproof structures. Before construction, welders should be given detailed instructions, emphasizing the hazards of welding slag to waterproof structures and preventive measures. They should be required to maintain high concentration during welding, control the welding direction and angle, and try to make the welding slag splash away from the waterproof structure. At the same time, welders should be organized to conduct practical exercises regularly to improve their welding technology level and reduce the problem of welding slag splashing caused by improper operation.
Establish a complete quality inspection system to supervise the whole process of waterstop steel plate welding and waterproof structure protection. Construction management personnel need to conduct inspections during the welding process, correct irregular operating behaviors in time, and check whether the protective measures are in place. After welding is completed, the surface of the waterproof structure should be carefully inspected. If damage is found, remedial measures should be taken immediately, such as repairing the waterproof layer or replacing the damaged parts, to ensure the integrity and effectiveness of the waterproof structure. Through the synergistic effect of the above measures, the damage to the waterproof structure caused by welding slag can be avoided to the greatest extent, and the waterproof quality and service life of the project can be guaranteed.
