钢筋 Rebar
（重定向自Concrete reinforcing bar）
钢筋（又称缧纹钢），是一种钢制的条状物，是建筑材料的一种。例如在钢筋混凝土之中，用于支撑结构的骨架。钢筋抗拉不抗压，混凝土抗压不抗拉，两者结合后有很好的机械强度，而且钢筋与混凝土有着近似相同的热膨胀系数，因此成为现代建筑的理想材料。多数钢筋表面有凸起的纹路，以增强和混凝土的结合力。
Concrete reinforcing bar
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英语百科
Rebar 钢筋
（重定向自Concrete reinforcing bar）
Rebar (short for reinforcing bar), also known as reinforcing steel, reinforcement steel, is a steel bar or mesh of steel wires used as a tension device in reinforced concrete and reinforced masonry structures to strengthen and hold the concrete in tension. Rebar's surface is often patterned to form a better bond with the concrete.
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