Avoiding risks - Analysis of common problems with asphalt waterproof coils

Each roll of waterproof coils before the factory, have gone through lean production and strict quality control, but in the process of late use, due to transport storage, construction applications caused by improper product construction failed to achieve the desired results, this paper on the waterproof coils in the daily application of common problems caused by solutions and precautions for later use to avoid risks.
, the material into the sampling thickness is not enough
cause analysis
supervision or test personnel did not choose the correct thickness measurement equipment.
Wrong Measurement Thickness Tool (only for rigid material thickness measurement)
Solution
Based on GB/T 328.4-2007 building waterproof coil test method, the measurement should be carried out using the standard required thickness gauge, not the cursor caliper or the kilometer ruler for measurement .
Note
read immediately after contact with the hot melt coil thickness test, and immediately after the self-stick coil thickness test drops lightly.
II, hot-melt modified asphalt coils after construction surface cracking
cause analysis
1, coil surface aging, PE isolation film and asphalt coating material shrinkage ratio is not consistent resulting in

material surface "cracking"
resolving measures
1, material surface "cracking" problem, because polyethylene film is only the surface anti-stick material is not resistant to ultraviolet aging, should be done as soon as possible protective layer
;
3. Sliding after the construction of the vertical wall, shedding
(i) hot melt coil
cause analysis
1, product hot melt process did not melt state;
2, the top of the coil did not use metal pressure strip for fixing;
3, did not do wall building protection, did not fill back as required (barbaric backfill).
solution measures
1, according to GB 50345-2012 roof engineering technical specifications and GB 50108-2008 underground engineering waterproof technical specifications, hot-melt coils should be hot melt full, asphalt oil even, and the grass-roots to achieve full stickiness;
2, the top of the coil must be fixed with a metal bar;
3, according to GB 50108-2008 underground engineering waterproofing technical specifications, before backfilling should take protective measures against waterproof materials and then backfill (such as the use of insulation board, brick wall or other material isolation protection); backfilling should be batched, segmented, layered backfilling.
Sulation plate isolation protection
masonry wall protection
(ii) self-adhesive coil bonding slip, shedding
cause analysis
1, grass-roots flatness, cleanness, humidity can not meet the construction conditions;
2, the adaptability of the temperature (here temperature refers to the temperature of the material and the grass-roots contact rather than the ambient temperature; temperature directly affects the initial stickiness of the self-sticking product, the quality of the initial stickiness determines the initial bonding effect of the construction);
3, the construction site: different construction sites have different effects, in the depression, bulge or yin and yang angle, due to the stress is too large lead to the product's edge or bonding is not secure, there are tire self-bonding products prone to such problems.
Resolved edge problem
solution measures
1, according to GB 50345-2012 roofing engineering technical specifications and GB 50108-2008 underground engineering waterproofing technical specifications, waterproof layer construction must be on the grass-roots dust, sand, gravel, debris, debris and The mortar protrusions should be cleaned and dry, the waterproof base surface should be clean and dry, there should be no bright water or too humid, otherwise the moisture evaporation will cause the coils to bulge;
2, when the temperature is lower than 5 degrees C, must be bonded with the help of hot melt or hot air device, when the temperature is below 15 degrees C, it is recommended to increase the hot melt or hot air auxiliary;
3, the corner should be in accordance with the requirements of the radius of 50mm arc angle, when laying the coil should be kept loose and moderate; Therefore, some parts must be used hot melt auxiliary construction, in order to achieve a full sticky effect.
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