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An Analysis of external wall insulation system

Fiberglass mesh cloth as a protective layer of soft crack lost the key to reinforcing material into the outer wall insulation technology to the rapid development of applications, on the one hand it can effectively increase the tensile strength of the protective layer, on the other hand the effective dispersion stress, which could be generated shall be distributed into many smaller cracks cracks to form the concrete cracking. As the outer layer of protective insulation for the alkaline mortar cracking, alkali-resistant fiberglass mesh fabric of the long cracks to have a decisive fight against the (continued on page 121) 117 2007, technology exchange plant 2 to lift 35m enough, and the price will 200 - 400 yuan. Consumption of electricity a day for the 0.75x1 ~]. 75 degrees, and now Beijing is a construction for water use is 6.1 yuan, t, price of 0.88 yuan, degrees, so if a site using this recycled water, then flush the toilet, the water a day can save money for: 1.3x6.1-0.75x0.88 = 7.93-0.66 = 7.27 yuan. ② If - a squatting toilet set 10, then - a site of water a day can save money, 72.7 million, then - a site to consider the duration by 1 year, you can save water money 72.7x365 = 26535.5 元, 2o a stool water tank could save 53,071 yuan a year. A construction site toilet flushing can be seen from the above water conservation, the main and the number of times a day flushing toilets, washing every time, set the number of squatting, of the duration of such a relationship, we can refer to different construction sites accounted for above. Successful examples such as Xinkangjiayuan 12 #; t ~ T-way, is the use of this, the site workers squatting toilet set 15, from the start to save water now lOx30x15x7.27 = 32715 yuan. In fact, the site a lot of recycled water available, such as to collect rain water collection bath water, wash water, etc. to collect workers, after a simple washing treatment can be used as toilet flushing, concrete tank,[link widoczny dla zalogowanych], water spray dust suppression, water the flowers, etc. These all can be accounted for. Above reference for colleagues, in fact, how to conserve water at a construction site need to considering the characteristics of the project. Water conservation is a social problem, often the site of education on the need to increase staff awareness of water conservation and all the workers at any time to close all faucets, non-run,[link widoczny dla zalogowanych], run, drip, drain phenomenon, the data here refer to a stunning, if a little water stop dripping lh , one day drop of 3.6kg, - a month to drop 2. 6t, the water enough to make a life for six months. In the construction market is so competitive today, water conservation has a double meaning: First, reduce costs, and second, energy conservation, so we all act together to protect water resources. (Continued from page 117) meaning. From the durability analysis, the high-alkali fiber mesh grid than E mesh fabric and the durability of alkali is much better, at least 25 years to meet the requirements, therefore, enhance the choice of network recommended the use of high alkali mesh. ③ protective layer material selection because the cement mortar strength, shrink large, flexible deformation is not enough, directly outside of the insulation layer, poor weather, while the bow l from the crack. To solve this problem,[link widoczny dla zalogowanych], must be supplemented by a dedicated and rational cracking mortar enhanced network, and in the mortar by adding an appropriate amount of fiber and cracking mortar off the pressure is less than 3. Such as external finishes to brick, mortar crack in the cement can also add light sheet steel wire, steel wire mesh pitch should not be too small, nor too that the short side of tile should be at least two to cover the hole on the Internet, corrosion of steel wire should be hot dip galvanized steel mesh well. ④ no cavity structure to improve stability of the system for the use of polystyrene board insulation design, the insulation layer is mainly exposed to the gravity and wind pressure,[link widoczny dla zalogowanych], due to limited strength of polystyrene board, so that the insulation layer cracking, or even fall off. In order to improve the strength of insulation board should be to maximize the bonding area, cavity-free, failure to meet the requirements of wind pressure. Conclusion: The new building's exterior wall construction methods in recent years, due to the insulation, thermal insulation and other methods mixed defects in the design, the proposed use of external insulation, and in accordance with the gradient layer by layer, the release of stress the principle of flexibility, choice of materials and construction methods to achieve thermal insulation, cracking purposes. The external wall insulation system is an organic whole, composed of not only the relevant requirements of the flexible layer of synergy gradient, and should have a certain degree of compatibility, interoperability, to form a composite whole. Therefore, the external wall insulation system should be vinyl material suppliers by the quality system certification and system performance test system for testing materials and after passing the complete supply of materials to ensure that the matching system and the implementation of anti-cracking technology roadmap, and is useful in wall insulation system suppliers responsible for the quality of external thermal insulation. 121
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