Be bored with child layer craze has the following reasons, small make up give matched a plan, so that everybody judges craze reason roughly according to the circumstance of metope craze.
Construction reason
1, craft of make level of metope basic level closes nevertheless, the standard of the flatness that normally our basic standard needs to achieve relies on feet for two meters, after relying on a wall, the clearance that relies on feet and metope does not exceed 3mm, control as far as possible in 2mm less than, maintain metope to arrange smooth.
2, drive time limit for a project, take no account of circumstance of actual building site and weather, advanced a be bored with child the layer is returned a be bored with did not go up again below parched circumstance child pink. Be bored with child when construction, must wait for the first times dry after appearing, approve again blow below one, ability avoids craze, reduce repair trouble.
3, be bored with child batch blow too thick, incidental watch fights Libugan's case in process of dry, solidify, cause weather-shack. A string of 1 especially the be bored with of a wall child if approve,blow too thick, unripe straining of easy below gravitational action hair, sky is roused and craze. Because of this be bored with child scarcely can be odd batch blow heavy panel, should thin approve many times.
Normally the circumstance falls, suggest every are alled over batch blow ply to be less than 1.5mm, and approve again after get right on the job blow below one times (but the first approve with the 2nd blow time interval to should not be more than 3 days) , last be bored with child batch blow ply to not be less than 1mm.
4, agitate is inhomogenous, bring about be bored with of later period metope child bubbly craze.
Mix into enters other data
The eligible be bored with that regular brand produces child, each burden via layer upon layer experiment, test, won't appear commonly problem. Of course, if be when construction,the construction that does not press packet of mount coachs the method undertakes operating, mix into of do sth without authorization enters other data. Also can change be bored with child original function, probable influence be bored with child crack resistance, cause be bored with child layer craze.
Environmental reason
1, be bored with child batch after been blow, if ventilated too strong, bring about moisture to had elapsed fast, systole is inhomogenous, generation chap, blow especially thick with the autumn, below the circumstance with dry weather. Accordingly, blow be bored with child hind, should proper and ventilated, carry grime child the layer is natural dry, solidify.
2, in plum rains season or below the circumstance with damper weather, because air is medium moisture content is higher, be bored with of as a result child what need dry time longer, moisture is dry inhomogenous wait for a circumstance, bring about later period be bored with child become moldy more easily cottony, because this issues construction to had better use big wattage fluorescent lamp to undertake illumination drying in this circumstance, in order to prevent afore-mentioned situations.
3, wall body suffers rainwater to hit wet craze.
4, produce internal stress greatly too as a result of difference in temperature, be bored with child layer short time paragraph inside expand, systole also can bring about craze.
Product reason
Because of be bored with child the condition that quality causes craze does not see more, quality closes nevertheless more the problem of constant correspondence is desquamate, drop pink, is not chap. But the quality issue that also cannot remove material itself completely. Some be bored with child itself is fought split function difference oneself, return some be bored with child the ash that if should not be thick,approves calcium radical be bored with child, approve a little a bit thicker produce oneself craze easily also.
Other reason
Besides be bored with child reach be bored with child the be bored with that construction reason causes child layer craze, basic level sky is roused, the reason of other basic level such as craze of cement mortar layer, juncture place craze also can cause be bored with child layer craze. (fault type craze / empty craze bosomy type) among them the building personage processing that craze of sex of wall system structure must look for major, reason of other basic level is in be bored with child batch good examination, effective processing is done before blowing, control be bored with from fountainhead child layer craze.
Additional craze of sex of wall system structure, wall body because time is ages ago, long heavy master piece is used, suffer force to also all can not bring about wall body craze.
Note: Above picture originates network.
