1 scope
This technology is applicable for
industrial and civil construction underground polymer EPDM waterproofing
membrane underground waterproofing layer paving construction.
2 construction preparation
2.1 materials and requirements:
2.1.13 EPDM waterproofing membrane:
2.1.1.1 specifications: thickness
1.2mm,1.5mm; width: 1.0M; 20.0M.
2.1.1.2 main technical properties: tensile
strength ≥ 7MPa; elongation > 450%; low temperature embrittlement
temperature-40 ℃ below; watertightness (MPaxmin) >0.3x30.
2.1.2 end of polyurethane rubber used as
primary treatment agent (the equivalent of brushing cold oil), the material is
divided into two groups, as Brown colloid, b for black gel.
2.1.3 CX-404: used for coil with the base
paste is yellow cloudy gel.
2.1.4 butyl adhesive: used to roll joints,
points a and b groups, group a for yellow and turbid colloidal, b had a black
gel. When in use by the 1:1 mixing.
2.1.5 polyurethane coating material: used
for added to seal the seams, material divided into two groups, group a Brown
colloid, group b black gel.
2.1.6 polyurethane caulk used to roll your
head sealed.
2.1.7 other materials:
2.1.7.1 xylene: scrubbing tool used for
dipping.
2.1.7.2 ethyl acetate: for washing hands.
2.2 major appliances:
2.2.1 base treatment equipment: high
voltage hair dryers, flat spade, wire brushes, brooms.
2.2.2 material containers: drums.
2.2.3 line equipment: scale, small line,
color chalk bag.
2.2.4 cutting roll material: a pair of
scissors.
2.2.5 brushing tools: scroll brushes,
brush, roller, scraper.
2.3 operating conditions:
2.3.1 in high groundwater conditions spread
before pasting the waterproofing layer should be lowering of ground water
level, good drainage, reduce groundwater from the waterproof layer bottom level
300mm, and to protect the waterproof layer construction finished.
2.3.2 tile surface should be flat and
smooth waterproof layer of grass-roots, the grass-roots level must be foreign
body, sand bumps clean dust and other debris, without hollowing sugaring,
peeling, cracking and other defects.
2.3.3 primary should be kept dry, the
moisture content should be less than 9%, corners should be rounded arc of yin
and Yang.
2.3.4 waterproofing materials used are
flammable materials, storage and operation should be cut off from the source of
fire, fire prevention work.
3 operational processes
3.1 process:
Grass-roots cleanup →
polyurethane coat of polyurethane adhesive preparation → primer → special
parts add (additional) →
Sheet paste surface coating surface coating
of grass-roots → tiling waterproofing roll-roofing
Protective layer
3.2 basic cleanup: unqualified acceptance
of the base before construction debris, dust clean.
3.3 polyurethane adhesive preparation:
polyurethane material: ethyl =1:3 (weight ratio) percentage of match, mixing
evenly coat construction.
3.4 coat of polyurethane adhesive: prior to
the construction of large area coating, Yin Kok, onion and other complex parts
even brushing it again then use a long order large brush brush, brush the
adhesive thickness uniform, not threadbare. Brushing adhesive 4H dry, when you
touch the non-stick, can be carried out the next working procedure.
3.5 special added to site:
3.5.1 supplements coating: polyurethane
coating waterproofing material divided into two components, a: b =1:1.5 to
weight ratio combined with mix, onion in the floors, walls, expansion joints,
corner of yin and Yang, even brushing a layer of polyurethane coating, as
additional layer of waterproof weak parts, coating curing immediately after the
next process.
3.5.2 additional construction: design
requirements of special parts, such as yin and Yang angle, tube, use EPDM
membrane paving layer.
3.6 paving EPDM waterproofing layer
3.6.1 before paving at the grassroots on
the FT line, as criteria for master tile line, make it lay flat.
3.6. Paste the 2 coil coating: coil spread
on a clean base, with long brush roll CX-404 evenly, should stay out of the
overlapped parts glue. Basic drying drying glue to glue sticky hands.
3.6.3 primary surface coating: Primer
dried, cleaned primary surface, uniform with long brush roll CX-404 brushing,
brushing should not be too large, then drying glue.
3.6.4 volume material paste: in grass-roots
surface and the volume material paste surface has brushing good CX-404 rubber
of premise Xia, will volume material with φ 30mm, and long 1.5M of Center rod
(round wood, and or plastic pipe) volume good, by two people lift to laying end
head, note with line control, location to right, bond fixed end head, then
along play good of standard line to another end Pu posted, operation Shi volume
material don't pulled too tight, and note direction along standard line for, to
guarantee volume material take received width.
3.6.4.1 coil must not be in corner joint of
yin and Yang, the joints should be staggered.
3.6.4.2 operation exhaust: each spread a
sheet should immediately with a clean brush horizontal force starting from one
end of the coil rolling again in order to air out.
3.6.4.3 rolling: excluding air, in order
for the coil bonding, rubber-coated iron roller rolling again.
3.6.4.4 joint processing: volume material
take received of long side and end head of short side 100mm range, with butyl
adhesive bond; will methyl, and b group copies material, by 1:1 weight than tie
mixing uniform, with hair brush dipped butyl adhesive, coated Yu take received
volume material of two a surface, stay its dry 15~30min can for pressure
collection, extrusion air, no has wrinkle folding, then with iron roll rolling
a again
Intercepting coil overlapping three-tier
parts must be sealed with polyurethane caulk to fill properly.
3.6.4.5 received treatment: waterproof
polyurethane caulking around, and brush on a layer of polyurethane coating.
3.7 protection layer: waterproof layer
finished, according to the design requirements to cover general plane for
cement mortar, or fine-stone concrete cover; elevation for a masonry wall or
cement mortar layer, waterproof the outside protective layer can be affixed
with a certain thickness of the plate.
Mortar layer when roll-roofing tile,
surface brushing polyurethane coated thin sub ballast, to facilitate the
protection mortar adhesive.
Waterproof layer construction shall not be
carried out in rain, wind, weather, construction environment temperature shall
not be less than 5.
4 quality criteria
4.1 project:
4.1.1 membrane and materials must comply
with the design and specification for construction and acceptance of rules.
Check technical performance indicators for information on product
certification, testing, field sampling test.
4.1.2 waterproofing layers and deformation
joints, special parts of onion embedded detail practice shall be subject to
acceptance, to comply with the design requirements and specification for
construction and acceptance of rules.
4.2 Basic project:
4.2.1 grass-roots of the waterproofing
layer should be solid. Flat, corners are rounded or obtuse angle between yin
and Yang, surface clean uniform coat of primer, no missing coating, and
through. Check cover engineering acceptance record.
4.2.2 waterproofing layer paving
construction lap, received head and paste firmly tight and no damage, defects
such as hollow.
4.2.3 protective layer of waterproofing
layer should comply with the design requirements of the practice.
5 finished product protection
5.1 laying good volume material waterproof
layer, strengthened protection measures, guarantees from management are not
damaged.
5.2 onion through the walls, not collision
modification in the construction.
5.3 waterproof layer construction complete,
timely protection layer, protective walls.
6 quality problems to be noticed
6.1 joint at volume material take received
bad: joint take received form and long side, and short side of take received
width partial small, joint at of bond not dense, and empty drum, and received
Cha damaged; operation should by program, and play standard line, makes and
volume material specifications match, construction in the align line Pu posted,
makes volume material take received long side not is less than 100mm, short
side not is less than 150mm.
6.2 empty drums to pave and stick coil
primary wet, uneven, not clean, primary and coil into empty drum roll laying
air exclusion is not completely, or hollow between the coils. Pay attention to
the construction of the base should be fully dry, coil layer cannot nest to
live air.
When the wind is not suitable for
construction, cold glue sticky sand and dust caused by the empty drum.
6.3 at the root of poor waterproofing
paste: in this operation, clean carefully with the construction should be
clean, paving coil without mouth, Homburg, wrinkles and so on.
6.4 water leakage in the corner: the corner
of unwieldy, large. Cha place construction note, protect Cha coil, so lap meets
specified width.
7 quality records
This standard shall meet the following
quality records:
7.1 waterproofing product certification,
field sampling of the second interview information.
7.2 product certification, use of cement
materials Proportioning material.
7.3 hidden project check and acceptance and
quality inspection and evaluation of information.
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