Problemau gyda allanol wal inswleiddio
After y asesiad, we can gwybod bod y allanol wal inswleiddio systemau defnyddio yn yn fy gwlad's adeiladu marchnad bennaf cynnwys y canlynol mathau: polystyren bwrdd plastr inswleiddio system, system, gwifren grid inswleiddio system, polystyren inswleiddio system. Er hyn math o allanol wal inswleiddio systemau wedi eu manteision a nodweddion, maen nhw i gyd anfanteision o gwahanol graddau, yn bennaf fel dilyn.
1. Thin plastro o polystyren bwrdd.
�% a0Limited gan y cryfder o y EPS bwrdd, bydd yn wedi'i ddifrodi a wedi cracio pan mae'n nid plastr.
�% a1 Mae yn ceudod a mae'n hawdd i syrthio i ffwrdd.
�% a2 Mae'n nid cyfateb y bywyd o yr adeilad.
�% a3 Heavy gorffeniadau yn cyfyngedig.
2. Rwber powdwr polystyren gronynnau.
�% a0 Y trwch o y inswleiddio haen yw anwastad% 2c sydd yn effeithio y inswleiddio effaith.
�% a1The rwber powdr wedi gwael dŵr ymwrthedd a tywydd ymwrthedd. Pan y rwber powdr sment morter yn bondio i'r polystyren bwrdd, y cychwynnol bondio grym yn yn cymharol mawr. gyda y darn amser% 2c y gludiog cryfder o y rwber powdr yn raddol dissipates a yw nid gwydn.
③ Dau-gydran ar y safle swp adeiladu, y operability yw not good, a y inswleiddio thermol cyfernod yn yn anodd gwarant.
3. Steel wire mesh frame.
�% a0It does nid have good operability.
�% a2 Gwydnwch yn amheuol.
4. polywrethan.
�% A0 Y fformiwla a cymhareb o inswleiddio thermol byrddau yn anhrefnus a ansefydlog, yn arwain mewn gwael sefydlogrwydd corfforol o y byrddau a gwael thermol inswleiddio effeithiau.
�% A1 Y adeiladu o chwistrellu nid wedi wedi wedi'i ddatrys, a mae'n anodd gwarant y ansawdd y y prosiect.
5. Extruded polystyrene board.
�% a1Allanol teils syrthio oddi yn gyflymach a mwy o ddifrif.
�% a2The athreiddedd is poor, a cyddwysiad yn yn anochel.
Based on the above analysis, it is not difficult to find that the most prominent and critical problems of the several types of external wall insulation systems commonly used in the construction market in my country are easy to crack, easy to fall off, poor durability, insufficient thermal insulation performance, poor permeability, and poor construction operation. The method is not determined, the control method is not in place, etc. Especially for the widely used polystyrene board thin plaster and extruded polystyrene board insulation system, the hidden danger of falling off has become an unexpected real disaster. Mr. Chen Fuguang, deputy director of the Science and Education Committee of the China Building Materials Industry Association, has already reminded everyone that he clearly and firmly pointed out: "Practices at home and abroad have proved that if the quality of this external thermal insulation method cannot be guaranteed, it is very prone to the disadvantages of mortar cracking and grid cloth falling off. The lifespan is the same as that of buildings, especially buildings with high-rise frame and frame-shear structures, once this phenomenon occurs, it is difficult to remedy and repair, and there will be endless troubles."
Rhesymau a Gwrthfesurau
1. There are hidden dangers of cracks during the treatment of the base and the pasting and fixing of the insulation layer on the base. The main reasons are: the flatness of the surface of the base does not meet the quality requirements of the allowable deviation items of the external insulation project for the base, and the deviation of the flatness is too large. The surface of the base layer contains substances that hinder pasting, and no interface treatment has been performed on it. The adhesive used does not meet the quality and performance requirements of the external thermal insulation technology, or the embedding depth and number of anchors do not meet the requirements of the design specifications when mechanical fixation is adopted.
2. Cracks on the wall surface caused by the external thermal insulation construction of the paint finish. Due to construction factors, the reasons for the cracking of the external thermal insulation wall surface of the paint finish are: the grid cloth is drily lapped or the lap is not enough, and cracks are formed at the lap joint; the position of the mesh cloth is close to the thermal insulation layer, which cannot Anti-cracking effect, the plastering mortar layer is prone to cracks. Construction in winter is prone to cracking, hollowing, and falling off. Grinding is used for leveling. This method damages the dense structure of the polystyrene board surface, affects the bonding with the plastering mortar, and also reduces the thermal insulation effect of the thermal insulation layer when the grinding thickness is too large. When constructing the surface layer, if the layer is exposed to the sun or under high-temperature weather, the water retention performance of the layer is insufficient, which will cause the surface layer to lose water too quickly and cause cracking.
