1 scope
This technology is applicable to
underground masonry basement, pool engineering of waterproof layer and
waterproofing of concrete structures, such as additional waterproof layer, is a
rigid waterproofing construction technology of under moist conditions.
2 construction preparation
Requirements 2.1 materials and equipment:
2.1.1 cement: appropriate uses over No. 325
of ordinary Portland cement, slag Portland cement, when there is a corrosive
medium, should be selected according to the design requirements.
2.1.2 sand: sand, shall not contain debris.
Clay content may not exceed 3%, must be 3~5mm before use sieve of aperture.
2.1.3 admixtures: waterproofing powder,
waterproof oil, or Silicone water repellent, metal salts chloride waterproofing
agent. Shall be according to the product instructions correct use.
2.1.4 main machinery: grey Board, angle
iron trowel, Yin and Yang, large half barrels, wire brush, soft brush, eight-foot,
hammer, chisels sharp, twisting a chisel, shovel, broom, wood trowel, scraper
bars, and so on.
2.2 operating conditions:
2.2.1 structure of acceptance, has run the
acceptance procedures.
2.2.2 during construction of underground
waterproof and drainage, waterproofing works completed so far. Measures should
be implemented according to the construction plan of drainage and
precipitation.
2.2.3 the basement door window, reserve
holes, pipe detail such as import and export process.
3 operational processes
3.1 process:
Pigment cement slurry wall, ground base
treatment → brush bottom brush effect of cement slurry mortar → → → → plastering mortar
Brush cement mortar → maintenance
3.2 base treatment:
3.2.1 if cellular concrete wall surface and
loose concrete, scrape flush clean then use 1:3 cement mortar trowel or 1:2 of
hydraulic cement mortar-twisted reality. Surface application of 10% caustic
soda solution cleaned oil, cutting hair on the surface of the concrete.
3.2.2 brick wall waterproofing layer must
be in the brick seam depth of 10~12mm. Wall-embedded pipe showing the
grass-roots level, around the tick 20~30mm wide, 50~60mm deep grooves, twist
real 1:2 hydraulic cement mortar. Pipe through the wall should be according to
the design requirements of water, and the hidden procedures.
3.3 concrete wall cement mortar waterproof
layer
3.3.1 brush effect of cement slurry: a mix
of cement, water and waterproof oil =1:0.8:0.025 (by weight), cement mixed with
water first, then add the waterproofing oil mix, use a soft brush at the
grass-roots brush evenly on the surface, then wipe bottom waterproof mortar.
3.3.2 lower mortar, 1:2.5 cement mortar,
and waterproofing powder on cement 3%~5%, w/c to 0.6~0.65, to a consistency
7~8cm. First waterproof powder, sand and cement mix, add water, mix again. Mix
plaster operation, ash plastering 5~10MM thick, in ash solidified with a broom
before sweeping hair. To mix with the use of mortar. Time should not be more
than 60min mix, using mortar, prohibited the use of overnight mortar.
3.3.3 brush effect of cement slurry: bottom
ash after the lapse of 1d at room temperature, brush effect of cement slurry,
mix proportion and practices with the first layer.
3.3.4 plastering mortar: brush pigment
paste, followed by surface layers, mix with lower mortar, plaster thickness at
around 5~10MM, coagulation to use wood trowel before rubbing with iron trowel
calender.
3.3.5 brush effect of cement slurry:
surface layer after the 1d brush effect of cement slurry, mix cement, water and
waterproof oil =1:1:0.03 (by weight), the practice and the first layer of the
same.
3.4 wall cement mortar waterproof layer
3.4.1 water the grass-roots moist:
plastering the day before with a hose to soak your brick walls, plastering the
next day when the sprinkler wet brick wall.
3.4.2 the underlying mortar: mix cement:
sand =1:2.5, added 3%-waterproofing powder. Thin iron trowel scraping a first
layer, and then use wood trowel on ash, Cha, compacted surfaces and Niki.
Thickness of the plaster is about 6~10MM.
3.4.3 grain cement slurry: after the 1~2D
at the bottom, water wetting the surface, then put waterproof pigment cement
slurry, cement 3%-waterproofing powder. First waterproof cement and flour mix,
then add the water and mix with iron trowel thin layer, the thickness of 1mm.
3.4.4 plastering mortar: after you put the
pigment cement slurry and then plastering mortar, mix with the same bottom, use
a wooden float rub, with an iron trowel after compaction, and light. Plaster
thickness between 6~8mm.
3.4.5 brush effect of cement slurry: after
surface plastering 1d, brush effect of cement slurry, mix cement, water and
waterproof oil =1:1:0.03 (by weight), is the first cement and water mix, joined
the waterproofing oil and then stir the surface evenly with a soft hair brush
brushing again.
3.5 the ground cement mortar waterproof
layer:
3.5.1 clearing the grass-roots: cushion
loose concrete, mortar and other clean, protruding bulge out.
3.5.2 brush effect of cement slurry: mix
cement: dubbing =1:0.03 (by weight), coupled with the right amount of water
mixed with synthetic porridge-like, casting on the ground, even with brooms
sweep again.
3.5.3 the underlying mortar: bottom of 1:3
cement mortar, mixed with waterproofing powder on cement 3%~5%. Mix the mortar
fell on the ground, with the Poles feet scraping wood trowel Niki, iron trowel
all over again.
3.5.4 brush effect of cement slurry: normal
temperature interval 1d brush effect of cement slurry, mix cement: dubbing
=1:0.03 (by weight) plus adequate water.
3.5.5 plastering mortar: brush pigment
slurry of cement and plastering mortar, mix proportion and practices
underlying.
3.5.6 brush effect of cement slurry:
surface mortar initial brush after last time grain pulp (not too thin in order
to meet the requirements of wear-resistant), mix cement: dubbing =1:0.01 (by
weight), add the right amount of water, making it closely together with the
surface layer of mortar, and calendering, pressing.
3.5.7 maintenance: when the ground has a
certain value, sacks or watering the grass bag frequently cover the surface
moist curing time according to the weather conditions, generally 7d, slag
Portland cement shall not be less than 14d, this period shall not be subject to
hydrostatic pressure effects. Conservation of the environment temperature
should not be lower than + 5 ° c in winter.
3.6 program in plastering, Cha Yin-Yang
point and practice program in plastering, generally vertical walls before they
are ground. Cha should not be left at the corner of yin and Yang, each layer
plaster Cha on the child cannot remain in a line, between the underlying and
surface Ta Cha 15~20cm, Cha, to brush the waterproofing effect of cement
slurry. All the internal corner of the wall to do fillet of RADIUS 50mm, 10MM
round the corner radius. Internal corner to make 50mm on the ground round, Yin
corner trowel, compacting.
3.7 total control of five practices at
20mm. Multi-layer approach suitable for continuous construction, each layer
tightly, do not remain or not less than construction joints, such as the need
to ladder should be retained when Cha, Cha in accordance with the hierarchical
order, layers overlap closely, Cha locations are required to leave the internal
corner 200mm.
4 quality criteria
4.1 project:
4.1.1 raw materials (cement, sand),
admixtures, mix and its practice, provisions must comply with the design
requirements and specifications.
4.1.2 cement mortar waterproof layer and
the grass-roots level must be combined with solid, non-empty drums.
4.2 Basic project:
4.2.1 appearance: the surface smooth,
dense, crack, sand, pock marks and other defects. Yin and Yang is arc angle,
size meets the requirements.
4.2.2 Cha is correctly positioned,
hierarchical order, put layer upon layer tightly.
5 finished product protection
5.1 plaster to leave the shelf wall 15cm.
Removal shall not smash mouth and Wall shelves.
5.2 floor dust in time to clean up, do live
out feet clear.
5.3 the ground people too early.
6 quality problems to be noticed
6.1 hollowing and cracks: grass-roots have
not been working well, not cutting hair brush before the pigment slurry
concrete surface, gray base for oil is not cleaned, and resulted in the
hollowing and cracks. In addition, poor conservation, conservation period is not
enough, is one of the reasons.
6.2 leak: the floor plaster master, with
tight, flow occurs. Grain dry so fast that seepage caused by plastering mortar
adhesive is not strong. Cha, through-wall tubes and other details is bad, cause
leakage. Required careful operation.
7 quality records
This standard shall meet the following
quality records:
7.1 raw materials (cement, sand, additives
and other) factory certificate, the test report.
7.2 hidden inspection records.
7.3 quality inspection and assessment of
the project.
7.4 design change and record of
negotiation.
7.5 other technical documents.
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