![]() ![]() Agencies that meet the criteria of Practice D 3740 are generally considered capable of competent and objective testing, sampling/inspection/etc. Note 2-The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. This test may be used to determine the relative effects of this and other such materials on the viscosity of a slurry. Inert suspended solids such as fine sands and additives affect the viscosity of slurries. The Marsh Funnel Viscosity has been widely used in drilling soil and rock for water wells, oil, gas, soil stabilization, and the application of hydraulic barriers. Slurry viscosity is also directly related to filter cake permeability. In slurry wall construction and other applications, the viscosity of a slurry must be maintained at a level high enough to assist in stabilizing the trench walls. ![]() Marsh of Los Angeles who published the design and use of his funnel viscometer in 1931. Note 1-The development of the Marsh Funnel is credited to Hallan N. In this test, it is assumed that the apparent viscosity of a slurry is directly related to the flow duration through a specially shaped funnel (the Marsh Funnel). Relative changes in slurry viscosity can be identified using Marsh Funnel measurements and modifications can be made to mixing and handling procedures. The Marsh Funnel Viscosity test can be used for field quality control of slurries. Viscosity is a fundamental characteristic for slurries in construction applications. This test method allows for the assessment of an apparent viscosity of clay slurries in the laboratory and in the field. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |