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Hollow glass beads grout
Hollow glass beads slurry mainly cement, hollow glass microspheres, reinforcing and supporting the additive composition, according to cementing needs, choose a different additive system, the design of different density slurry formulations.
In addition to the strength of the grout and cement and cement formulations label the outside, depending on the size of the water-cement ratio of cement. Select the appropriate water-cement ratio, it can be grout with good flow properties, while other properties are easy to adjust. Whether water-cement ratio is too large or too small, for slurry properties are unfavorable. Too large, floating glass beads, Strength grout; too small, poor water slurry rheological properties, not easy to pumping operations.
Hollow glass beads formulated low-density slurry, poured into the conservation atmospheric consistometer 20min at 45 ℃ condition, and then six-speed rotational viscometer rheological properties, it can be seen, hollow glass beads grout good rheological properties, rheology power-law model in line, show the grout can form a stable royal space structure, to ensure the stability of slurry.
Hollow glass beads low density, high compressive strength, good compatibility with cement additive performance, which can effectively reduce the slurry density; hollow glass slurry system performance and stability, good rheological properties meet the coalbed methane wells cementing security; hollow glass beads slurry filtration system is small, coal-bed methane wells can play a good protection.