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US20070294973A1 – Method of priming a concrete pump
The present invention is a method of priming a concrete placing system that provides improved coating and lubrication to the inner walls of a concrete placing system as it passes therethrough during priming. The method uses less water than conventional pump primers and can be used on all types of jobs, i.e., with line pumps, boom pumps, or high-rise pumping.Cited by: 1
Ultrafine cementitious grout(Patent) | DOE Patents
The present invention also includes a method of filling boreholes used for geothermal heat pump systems with the thermally conductive cement-sand grout. The cement-sand grout has improved thermal conductivity over neat cement and bentonite grouts, which allows shallower bore holes to be used to provide an equivalent heat transfer capacity.
Geo-Loop – 50-500 – Grout Pumps – Grout Pumps by Geo …
Geo-Loop – 50-500 – Grout Pumps by Geo-Loop Inc.. Fill, mix, and pump a batch of grout in just 90 seconds! Performance figures like that may sound impossible to achieve, but the Geo-Loop 50-500 grout system measures up. Remarkably designed, powerfull…
Progressive cavity pump – Wikipedia
A progressive cavity pump is a type of positive displacement pump and is also known as a progressing cavity pump, progg cavity pump, eccentric screw pump or cavity pump. It transfers fluid by means of the progress, through the pump, of a sequence of small, fixed shape, discrete cavities, as its rotor is turned.