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1、GB1257390Sampling method of cement1 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 ,2.8 ,;,2.9 1/10,2.10 3 3.1 3.1.1 B1,3.1.2 a.:B2 b.:B3 3.2 a.()b.c.:3.3 3.3.1 3.3.2 a.1/10 6kg b.1/10 5min 6kg 3.4 3.4.1 :3.1.1,3.4.2 :B2 20,3.4.3 :2m,B3,3.5 3.5.1 ,3.5.2 0.9mm,3.5.3 10 0.9mm A,:3.6 3.6.1 ,3.6.2 ,3.6.3 ,3.6.4 3.7 ,A()
2、A1 A2 A2.1 A2.2 A2.3 A2.4 ,28 6%,;,6%,A2.5 ,A2.2,A2.6 ,A3 A3.1 X=101iXi101X.(A1):Xi,MPa A3.2 S S(A2):()110XXiS101i2=.(A2)A3.3 Cv Cv(%)(A3):%100XSCV=.(A3)A1,MPa3 28 130.151.3217.741.8325.846.5426.348.8523.342.0623.342.1727.447.6821.341.7926.648.51019.641.9A4 A4.1 1 425 A1 28X()9.415.487.416.471.420.4
3、28.485.468.413.51101=X28+)MPa(2.45=S28:()()()()()()()()()()2222222222282.459.412.455.482.457.412.456.472.451.422.450.422.458.482.455.462.458.412.453.5191S+=3.70(MPa)Cv(%):19.81002.4570.3100XSC2828V=28 6%,B()B1 ,B1.1 B1 B1 1;2;3;4;5;6 B1.2 B1.2.1 :A 500mm 225mm,B 300mm 150mm B1.2.2 :A 15kg,B 5kg(28g/cm3)B1.2.3 :120W B1.2.4 ,0 8kg/h B1.2.5 B1.2.6,B2 B2 B2 1 2 B3 B3 B3 L=10002000: