1 scope
The technology is applicable to the roof
using synthetic polymer waterproofing volume material waterproof layer paving
construction.
2 construction preparation
2.1 materials and requirements:
2.1.1 synthetic polymer membrane:
2.1.1.1 a butyl rubber EPDM waterproofing
membrane
Specifications: thickness l.2mm, 1.5mm,
20m, wide 1M;
Technical performance: see table 10-9
Butyl rubber EPDM waterproofing membrane
properties table 10-9
Project performance indicators
Tensile strength (MPa) ≥ 7
Breaking elongation (%) More than 450
Heat retention of elongation (%) ≥ 70
(80 ± 2 ℃, 168H)
tensile strength (%) ≥ 80
Cold brittle at low temperature and humidity
(℃)-40 ℃
Watertightness (MPaxmin) ≥ 0.3x30
2.1.1.2 chlorinated polyethylene-rubber
blended waterproof coiled material.
Specifications: thickness l.2mm, 1.5mm,
20m, wide-LM, 2m;
Technical performance: see table 10-10.
Waterproofing properties of chlorinated
polyethylene rubber temperature table 10-10
Project performance adhesives
Tensile strength (MPa) ≥ 7.36
Elongation (%) More than 450
Low temperature (℃)-30 deg
Watertightness (MPaxmin) 0.3x30
2.1.1.3 polyethylene chloride waterproofing
roll-roofing
Size: l.2mm thickness, long, volume
20m/wide 0.9m;
Technical performance: see table 10-11.
Table 10-11 of polyethylene chloride
waterproofing roll-roofing
Project performance indicators
Tensile strength (MPa ≥ 9.8
Elongation (%) ≥ 10
Watertightness (MPaxh) 0.3x2
Thermal aging (c XH) 100 ° c x720h decline
in strength
Resistance to low temperature (℃)-30 ℃ around 10MM
no crack
Note: the synthesis of polymer membrane
shall conform to GB 12952-92, GB 12953-91, HG 2402-92 standard. And meet the
design requirements, factory, qualified second interview information.
2.1.2 synthetic polymer waterproofing
roll-roofing materials selection is shown in table 10-12.
Synthetic waterproofing membrane supporting
material selection table l0-12
Supporting material EPDM anti-
Water coil use of chlorinated
polyethylene-rubber
Blended waterproof coiled material using
chlorinated polyethylene
Waterproofing membrane
1. primary treatment agent for
polyurethane, group b xylene thinner polyurethane paint diluted or emulsion
paint spraying diluted ethyl acetate binder: petrol (1:1)
2. primary adhesive CX-404 adhesive CX-404
adhesive, glue or adhesive 409 LYX-603-3, light yellow transparent viscous
liquid and Peel strength ≥ 20N/2.5cm
3. the roll seam adhesive butyl rubber
adhesive a and b components, or a single component, butyl rubber adhesive of
neoprene adhesive
CX-404 glue
CX-401 rubber LYX-603-2 rubber, gray
viscous liquid and Peel strength 25N/2.5cm
4. enhancing polyurethane caulk sealant (a
and b groups) polyurethane caulk with polyurethane caulk
5. the colorants used for roof stain
(silver gray) paint color paint (Silver) colored paint (silver-grey)
6. Since the curing tape butyl rubber tape
or other adhesive tapes
2.2 the main tools:
2.2.1 electric mixer, high-voltage hair
dryers.
2.2.2 iron rolls, hand rolls, son of
pressure, small shovel, bucket, gas torches, scissors, tape, broom, small line,
with colored powder, chalk.
2.3 operating conditions:
2.3.1 review drawings before construction,
preparation of roof waterproof construction programmes, and technical
clarification. Roof waterproofing must be certified by professional
construction teams.
2.3.2 waterproof layer paving construction
of grass-roots must be completed, and after curing, drying, waterproof layer
construction the base surface should be clean, while grass-roots acceptance,
qualified before the waterproof layer construction.
2.3.3 primary slope should comply with the
design requirements, without hollowing, defects such as cracks, sanding,
stripping; grass-roots water content should not exceed 9%.
2.3.4 waterproof layer construction as
designed, ready to roll and supporting materials, storage and operations should
be kept away from sources of ignition and prevent the occurrence of accidents.
3 operational processes
3.1 process:
Grass-roots cleanup brushing primary
treatment agent → additional → construction → coil with grass surface coating
Coil → coil charge paving
bond →
→ → coil
connector seal water test cover
3.2 cleaning the grass-roots: before
acceptance of the grass-roots construction waterproofing surfaces clean.
Without affecting the quality of waterproof layer defects such as dust, debris.
3.3 primary brushing treatment agent:
coating of polyurethane adhesive.
3.3.1 preparation of polyurethane adhesive:
polyurethane material: ethyl =1:3 (weight ratio) percentage of match, mixing
evenly coated construction; can also be made of polyurethane materials
according to a: b: share cooperation of xylene =1:1.5:1.5, construction of
coating mix.
3.3.2 brushing polyurethane Primer: large
area before brushing, use paint brush the adhesive at the corner of yin and
Yang, onion, water fall mouth detail of complex parts even paint over
polyurethane adhesive. Then longer in large part paint brush. Xu brushed rubber
(oil equivalent of cold base) thickness should be consistent, there shall be no
leakage brush, gray, and so on.
3.4 additional construction: Yin and Yang
Kok, onion, water falls and other parts must be done before additional layers,
self-adhesive sealant can be used or a polyurethane coating, can also spread a
layer of synthetic polymer waterproofing treatment. Should be determined
according to the design requirements.
3.5 coils and the grassroots grain surface
coating:
3.5. surface coating 1 volume: volume
material spread on a clean base, with long brush roll CX-404 roller coating
evenly. Should stay out of the overlapped parts glue, side head parts vacated
by 100mm.
Brushing adhesive thickness to uniform,
shall not has leak end of or condensed block class material exists; volume
material coated rubber Hou 10~20min static reset dry, dang refers to touch not
stick hand Shi, with original volume material tube will brush rubber oriented
outside volume up, volume Shi sweet head flat, volume effort consistent,
diameter shall not a big, a small, and to prevent involvement sand grain and
debris, keep clean.
3.5.2 primary surface coating: coating the
adhesive dried, brush on the surface CX-404, with long brush roll CX-404, not a
repeated brushing, preventing the sticky adhesive or condensation may be
formed, uniform details using a brush brush, rest for dry tiling membrane.
3.6 coil paving: coil and base coating of
glue drying (hand touch the non-stick, 20min), you can carry out to pave and
stick coil construction. Coil layer, thickness should comply with the design
requirements.
3.6.1 from cornice at the roof of the coil
should be parallel to the laying, bi-directional flow gradient coil take a
get-along the flow direction, lap width of the long edges and ends, such as
when the empty shop, stick, stick, are 100mm; method of 80mm, and the end of
the answer to stagger 250mm.
3.6.2 coil from a water slope downhill
start, coil specification pop-up baseline paving and longer perpendicular to
the flow direction of the coil. Pay attention to the coil should be prepared to
reduce corner joints of yin and Yang.
3.6.3 tiling plane and vertical face
connection of coils should be from the bottom up, so roll close to the corner
of yin and Yang, spreading to the coil is not pulled too tight, and without
folds, and hollowing phenomenon.
3.6.6.2 synthesis polymer volume material
take seams with butyl adhesive a,, and b two a group copies, by 1:1 of
proportion tie mixing uniform, with paint brush uniform brushing in opened of
volume material joint of two a bond surface Shang, static reset dry 20min, can
from end began bonded, operation Shi with hand from in to outside side pressure
collection, side excluded air, and handheld small iron pressure roll pressure
real, edge with polyurethane embedded sewing cream closed.
3.7 water test of waterproofing layer:
coiled material waterproof layer construction, acceptance of concealed work,
confirm that is in line with the design requirements and should do water
testing, confirmation is not leaking water, before construction of waterproof
layer.
3.8 coating construction: the coil paving
is complete, occult test, storage testing, confirmed cases of leakage-free,
non-Crown roofing brush evenly with a long brush stain protective coating;
master roof block in accordance with design requirements, and other rigid
protective layer.
4 quality criteria
4.1 project:
4.1.1 synthetic polymer membrane and the
mixture ratio of cemented material variety, grade and must comply with the
design requirements and the provisions of the relevant technical
specifications, standards.
4.1.2 waterproofing layer and its
deformation joints, eaves, flashing, water fall mouth, embedded parts such as
detailed practices must comply with the design requirements and technical code
for roof engineering requirements.
4.1.3 roofing coiled material waterproof
layer non-leaking.
4.2 Basic project:
4.2.1 tiling waterproofing layer of
grass-roots, the drainage requirements, and clean, free from sand, empty the
drum and loosening, Yin and Yang corners should be rounded or obtuse angle; no
ponding phenomenon of waterproofing layer.
4.2.2 added to polyurethane adhesive,
polyurethane coating waterproofing agent coating evenly, there shall be no
leakage defects such as pitting and brush.
4.2.3 paving and waterproofing layer lap,
collecting heads, should comply with the design requirements and technical code
for roof engineering requirements, and should be bonding, cracks, damage-free,
slip, Homburg, foaming, folds and other defects.
4.2.4 coil protective coating: coating
should be firmly attached, cover evenly, the same color, there shall be no end
of leaking and peeling defects; paving block layer should conform to the
quality checking and evaluation standards.
5 finished product protection
5.1 has paved the waterproofing layer, protective
measures should be timely, injury prevention tool and construction job.
5.2 construction of roofing waterproofing
layer may not be through the roof, wall deflection tube root injury.
5.3 slot before, at Shui Guan Kou
waterproof layer construction, there shall be a temporary block, after
completion of the waterproofing layer should be cleared to ensure smooth within
the tube, sew, meet function.
5.4 waterproof layer construction complete,
protective layer should be ready in time.
5.5 no pollution during construction of
finished product.
6 quality problems to be noticed
6.1 volume material waterproof layer
hollowing: occurs between the screed and coil, especially coil seams; reason is
basic level without drying, gas excluded is not complete, coil binding is not
strong, false; should control the process of acceptance.
6.2 volume material waterproof layer
leakage: strengthening the detailed operation, onion, water fall spout.
Expansion joints and lap at coil, should do your bonding, protecting the Cha in
the construction, caulking should be cleaned, clean Cha's faces stuck to ensure
construction quality, serious water test.
6.3 water: roofing, gutters flashing slopes
do not, enough slope, flatness deviation of roof. Construction of grass-roots
screed flashing slope should meet the requirements.
7 quality records
This standard shall meet the following
quality records:
7.1 synthetic polymer membrane and
cementitious materials product certificate, and retest before use.
7.2 mix information and bond test of cementing
material preparation.
7.3 hidden inspection data and quality
inspection and evaluation of data.
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