Can you tell me the difference between grouting and injection?
grouting machine and injection equipment ?
grouting materials and injection materials?
Answer:
injection is placement of epoxy materials under extremely high pressure and is used to seal small width cracks in water retention structures.
some grouting is not done under pressure typically. When grouting under column base plates, the grout may be placed by hand.
when grouting voids under slabs on grade, the grout is placed under some lower pressure to find and fill the voids and to prevent settlement.
the grout is usually cementitious in nature, i.e. contains cements as part of its matrix. It may also contain sand and water. Some grouts are premixed, all you add it water and a means to paddle mix the mixture into a slurry mixture.
epoxy injection is not cementitous, it is composed to usually a two part mixture of epoxy resin and other chemicals which are mixed on site and used quickly because the pot life (usable period during which the product may be used) is typically less than 30 minutes. Pot lif is ambient temperature dependent.
A good reference is sika products. do a search at
www.sikausa.com
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