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《Cement》 2009-01
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Monte Carlo simulation of sampling error of homogeneous test

ZHANG Da-kang Lafarge & Shui On (Beijing) Technical Service Co., Ltd. Chongqing Branch, Chongqing 400010, China  
The current sampling error of homogeneous test and the sampling error with extended samples capacity were numerically simulated by Monte Carlo Method. The result showed when the population standard deviation was 1.5MPa, the sample capacity was 10, and the corresponding 28d compressive strength of cement was 40MPa, 50MPa, 60MPa, the sampling error denoted by coefficient of variation was 1.7%, 1.4%, 1.1%. The error was so big to lead a wrong evaluation on cement homogeneous index. According to the Monte Carlo simulation of sampling error after the sample was extended, the modification suggestion was presented on sampling method for homogeneous test.
【CateGory Index】: TQ172.66
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