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SPREADING MODEL OF GROUTING IN ROCK MASS FISSURES BASED ON TIME-DEPENDENT BEHAVIOR OF VISCOSITY OF CEMENT-BASED GROUTS
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Abstract Experimental results indicate that the viscosity of cement-based grouts is time-dependent，and the law conforms to an exponential function where the shear shows no apparent law，i. e.， ，the shear of certain cement-based grout at time t，is nearly equal to its initial value . Based on time-dependent behavior of grouts，a grouting spreading model suitable for rock mass fissures is presented and a programme to predict the grouts spreading with VC++ language is developed. The application of the spreading model in two projects has proved to be successful in practice.
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Received: 18 February 2004
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