Doosan DBC 130 II, Installation Manual

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DBC 130II DBC130II ISE41
6. Second Round of Grout Injection
※
When the temporary installation is completed, inject grout into the column bed, table bed
and the foundation holes of ATC base before curing the surface. This process is very
important because it affects the accuracy, strength and lifecycle of the machine and
more. For this reason, suitable grout materials and a correct, well-ordered workflow are
required for each process.
Uncertified grout and/or a faulty installation of the machine may cause serious problems
such as a delay and inaccurate precision work that may incur extra costs.
6.1 Checkpoints before injecting grout
1) Is the concrete surface of each foundation hole rough? (Chipping)
▪
If the foundation surface is smooth, then it is necessary to make it rough in order to
reinforce the adhesiveness between concrete wall that was constructed in the primary
foundation work, and secondary grout.
2) Has foreign matter inside of each foundation hole been completely removed?
▪
Rid the hole of any concrete debris or bits of flexible tubes used in making the
foundation hole.
3) Has each foundation hole been soaked in water?
▪
This is very important because it is to improve the adhesiveness and fluidity of grout
and to prevent it from drying too quickly. Fill the holes with water 12 hours before
grouting, and drain the water right before grouting.
6.2 Selection of Grout
High-quality grouting material contributes to seamless contact on the leveling block with
improved strength, forming a sound foundation for the machine.
1) Secondary grout requirements: 1.5
㎥
(3.6 tons)
120 sacks or so (Grout: 25 Kg)
2) Required compression strength of the secondary grout: 400 Kg/
㎠
or higher
3) Recommendation Grout
▪
Ssangyong Cement :
쌍용 바스콘
Plus
▪
Union : Grout GM
▪
Henkel : Ceresit CX11