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UsageFor injection of wet cracks in all types of structural concrete elements, masonry, and brickwork. Quickmast 110 is used in conjunction with Quickmast 120 for permanent and effective sealing of live cracks. Quickmast 120 is flexible resin with unique physical properties such as: 60 - 80 % elastic properties and 2 MPa tensile strength.
Materials SuppliedQuickmast 110 is available in 1 and 5 l packs
Storage/ Shelf Life
Quickmast 110 has a shelf life of 12 months from date of manufacture if stored at temperatures between 10 and 30oC in dry conditions and original sealed containers.
If these conditions are exceeded, DCP Technical Department should be contacted for advise. StandardQuickmast 110 is suitable for use in contact with potable water when tested in accordance to BS 6920. |
Technical Information
The technical data are specified at 25 ° C. Application InformationDepending on crack width, depth, location, and thickness of the structural element that needs to be injected, many injection techniques requiring different injection tools and equipment may be used. The method of injection given in this Technical Data Sheet is based on most common situation. For more details, DCP Technical Department should be consulted for assessments and advice. SUBSTRATE PREPARATION
The surface of the cracks
should be cleaned from dust, oil, plaster, grease, curing compound and corrosion
deposits. All cracks to be repaired should be cleaned with compressed air. This
should be carried out after drilling of injection holes. Injection Holes Drilling & Fixing Using high quality rotary
hummer drill, and depending on packer diameter used, a suitable drill pit used,
usually 13 mm or 16 mm diameter
mechanical packers are used. The angle which drilling
should be is 45⁰C or less to the surface and toward the crack. Depth of the
drill holes intersecting the crack should be somewhat close to middle of
structure, if possible. Holes
greater than 45 cm are not required even if the concrete being repaired is more
than 90 cm thick. Holes should always be staggered from one side of the cracks
to the other. Spacing: distance between drilled holes usually varies from approximately 15 – 50 cm according to width of the cracks (30 cm is commonly used). Yet the wider the cracks, the further apart are drill holes. Note: If concrete thickness 15 cm or less, do not attempt
angle drilling. Also to minimize concrete spalling, packers will be set into
the face of the crack. Fixing of
Injection Mechanical Packers (Nipples) Packers shall be placed in
drill holes so that top of the rubber sleeve is below concrete surface. Tight
the packer with wrench as much as you can. Mix Quickmast 110, resin
and accelerator using mechanical slow speed drill. Load
the mixed resin and charge the pump, hose and gun. When
injecting into a defined crack, the crack surfaces between two mechanical
packers exhibits immediate free flow of resin while working the first packer,
pause for few minutes, in most cases the foam of Quickmast 110 will react fast
enough with water and expand rapidly to close these cracks, and the cured
Quickmast 110 will heal the crack and provide surface seal to contain the
material to flow. After 2 - 3 min , start pumping again. If the crack between the packers did not heal, then apply Setplug a fast cure water plug. Begin injection at point of highest resistance to ensure good penetration and minimal loss of materials. The injection is usually starts at the lowest point on vertical crack and at the narrowest area on horizontal surface.Injection
process will continue until the mixed
resins (Quickmast 110) travelled to next packer. Disconnect and move to next
packer. After
completing two packers, return to first packer and inject again. Continue with
this fashion until crack is completely filled. Immediately and after water flow stoppage, inject the crack/ honeycombing with a mixed (part A & B) resin using Quickmast 120 to permanently seal the crack/ honeycombing. |
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