When it comes to choosing the right rebar or round steel for water-stop Screws, the decision often hinges on the strength grade of the material itself. For most applications, particularly those involving concrete grades around C30, standard rebars or round steel work well. However, it’s important to prioritize using brand-new steel over recycled materials, as older steel tends to lose significant strength due to wear and tear. While some construction teams might prefer rebars, others may opt for round steel, depending on their specific needs. Ultimately, the critical factor isn’t the type of steel but its pressure resistance. Whether you’re working with rebars or round steel of the same diameter, their pressure resistance levels are comparable.
Understanding the Material of Water-Stop Screws
Water-stop screws are typically made from either round steel or rebar, both of which come in various grades of strength. Construction standards often favor Q235B and Q345B materials for these screws, especially in three-stage systems. Q235B is a popular choice due to its excellent pressure resistance, though materials lower than this grade may not suffice. Such distinctions are hard to detect visually; they require testing under tension to confirm. Other materials like No. 45 steel can also be used, depending on project specifications.
Shear wall water-stop screws, on the other hand, are fabricated by welding water-stop sheets onto steel bars with diameters exceeding 12mm. These screws provide waterproofing capabilities that ordinary steel bars lack. Common materials used include Q235B, Q345B, and 45 steel, all of which are customized based on shear wall design requirements. These materials are generally categorized as either round steel or rebar. Steel bars below these grades are less durable and cheaper, making them unsuitable for water-stop purposes. Standard water-stop screws usually measure over 12mm in diameter, with thicker bars having diameters larger than 22mm. Thinner bars fall between 6mm and 10mm.
In conclusion, the choice between round steel and rebar boils down to personal preference and project requirements. What truly matters is ensuring that the chosen material meets the necessary pressure resistance standards. Always consider sourcing new, high-quality steel to ensure reliability and longevity in your projects.
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