MEKASTER has commenced manufacture/assembly of a range of Grouting Systems, under Licence from world renowned HANY AG*, Switzerland.

Grouting was for a long time considered to be an art rather than a science. Much of that had to do with little knowledge of the reaction of the grout in the ground and the lack of modern 'State of the Art' equipment. With the recent developments in both, equipment and materials grouting is now more and more accepted as an efficient method for the treatment of soil and rock formations. Hence, choosing the right equipment is of the utmost importance, which Mekaster is now providing.

Grout Pumps - Series ZMP 600/700/800

A full range of Hany ZMP grout pumps covers almost every grouting requirement. These low-wear plunger type pumps handle a wide variety of grout mixes from neat cement suspensions to backfill mortar with sand of up to 8 mm particle sizes. All pumps are equipped with the automatic pressure control system (APC). With this system, the maximum pumping pressure can be preset on the hydraulic power pack. Whenever the preset pressure is reached, the pump automatically adjusts its output according to the grout take of the ground. Whenever the grout take ceases, the pump stops and maintains the pressure. The pumping rate can also be adjusted to meet the requirements of the particular ground conditions. The ZMP 700 series can be equipped with different plunger units to cover a wide range of pumping pressures and capacities.

The HCM line of highshear (colloidal) mixers is recognized worldwide for its excellent mixing performance, efficiency and wear resistance. The HCM mixers will mix water with bentonite, cement, ultra-fine cement and other similar suspensions effectively. Sands up to 8 mm particle sizes can even be added on the smaller HCM 300. The mixers can be equipped with a weigh-batching system to automatically batch and mix up to three dry ingredients and three chemical additives with water.

The HRW agitators are used as holding tanks between the HCM batch mixers and the pump. In the slowly revolving agitator, the grout suspensions are homogenized and air bubbles are removed.

The INJECTO-COMPACT (IC) grout plants consist of an HCM mixer, an HRW agitator and a ZMP grout pump. All components are functionally arranged on a common base with a central lifting point. The use of the INJECTO-COMPACT grout plants reduce considerably the installation time on site and minimises operating personnel.

The INJECTO-COMPACT (IC) 310/325 are suitable for grouting tie-back anchors, rock bolts, soil nails, tension cables as well as for tube-à-manchette and rock grouting. In microtunnelling, these compact plants are used to mix and inject bentonite suspensions.