The Cumulative Sum (CUSUM) System for Quality Control of Ready- Mixed Concrete: Fundamentals and Application

سال انتشار: 1388
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 2,437

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شناسه ملی سند علمی:

ICCT01_171

تاریخ نمایه سازی: 19 شهریور 1388

چکیده مقاله:

In this paper, cumulative sum (cusum) system is presented for quality control and monitoring of ready-mixed concrete plants. Two examples are presented to investigate the application of this method. In the first example, the production of ready-mixed concrete is simulated with data intentionally varied mean and standard deviations, generated with normal distributions. These generated data, as concrete compressive strength, is monitored with pair of cumulative sums where the first is for detecting mean increases (SHi) and the second is for detecting mean decreases (SLi). In the second example, the teal data from a ready-mixed concrete is controlled by the cusum system. To simplify the controlling system, a transparent V-mask designed and used to identify the small change in the production system.

نویسندگان

J Sobhani

Building and Housing Research Centre, Department of Concrete Technology Bonyad Boton-e Iran Co. Ltd.

A.R Pourkhorshidi

Building and Housing Research Centre, Department of Concrete Technology Bonyad Boton-e Iran Co. Ltd.

M Najimi

Building and Housing Research Centre, Department of Concrete Technology Bonyad Boton-e Iran Co. Ltd.

M.M Kalantari

Building and Housing Research Centre, Department of Concrete Technology Bonyad Boton-e Iran Co. Ltd.

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