دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a group of two or more particles held together by strong forces. Aggregates are stable with normal stirring, shaking, or handling;they may be broken by treatment such as ball milling a powder or shearing a suspension.

n: A group of two or more individual particles held together by strong forces. Aggregates are stable to normal stirring, shaking or handling as powder or a suspension. They may be broken by drastic treatment such as ball milling a powder or by shearing a sus

an essentially inert mixture of particles of a particular size range.

n: organisation that sets guidelines for the testing and use of equipment and materials. Its publications are ASTM Standardisation News, Book of Standards, Cement and Concrete Aggregates Journal, Composites Technology & Research, Geo technical Testing Journal, Journal of Forensic Science, and Journal of Testing and Evaluation. Address: 100 Barr Harbor;West Conshohocken, PA 19428;(610) 832-9500.

a formation that comes apart or disaggregates or separation of grains.

n: a suspension of extremely fine particles in a liquid (such as colloids in a colloidal solution).

n: Subdivision of aggregates. Dispersion increases the specific surface of the particle, which results in an increase in viscosity and gel strength.

a mixture of a internal phase of solids, droplets or bubbles that stay relatively suspended in a continuous fluid.

n: a hardened aggregate of different minerals. Rocks are divided into three groups on the basis of their mode of origin: igneous, metamorphic, and sedimentary.