螺螺纹纹钢钢筋筋截截面面面面积积及及钢钢筋筋重重量量直径（mm）钢筋外径（mm）钢筋面积（cm2）钢筋重量（kg/m）2.50.04930.07140.12650.19666.750.2830.222890.5030.3951011.30.7850.6171213.51.130.8881415.51.541.20816182.011.57818202.541.99820223.142.46622243.82.98425274.913.8532830.56.164.834307.075.5493234.58.046.313349.087.1273639.510.187.994043.512.569.865圆圆钢钢钢钢筋筋参参数数钢筋直径（mm）钢筋重量（kg/m）80.395100.617120.888141.210161.580182.000202.460硅硅酸酸盐盐水水泥泥各各龄龄期期强强度度要要求求（GB175-92）标号抗压强度（Mpa）抗折强度（Mpa）3d28d3d28d32512.032.52.55.542516.042.53.56.5425R22.042.54.06.552523.052.54.07.0525R27.052.55.07.062528.062.55.08.0625R32.062.55.58.0725R37.072.56.08.5注：R为早强型
