【正文】 ation technology is also increasing, especially in exterior wall insulation technology has made great progress, and bee an important building energy saving technology. At present, the building is often used in external wall insulation are mainly within the insulation, insulation and other methods, according to the development of new technologies, new energysaving materials should be developed and utilized, so as to really implement building energy conservation. [ Key words ] external wall insulation building materials energysaving building Building energy saving is the implementation of the national environmental protection and energy conservation policy is the main content, it is to carry out the sustainable development of the national economy important ponent. The national Ministry of construction in1995 promulgated the rules for the implementation of city building energy saving and other documents, the energy conservation design standard for residential buildings 39。s energysaving housing construction work unceasingly thorough, continuously improve the energy efficiency standards, the introduction of the development of many new energysaving technology and materials, vigorously promote the use of residential buildings. But our country39。 external insulation package in the main structure of the lateral, to protect the main structure, prolongs the service life of buildings。3) more than two kinds of fixed bination. This approach has the following advantages:1) because it is in Europe and the United States have been in use for nearly thirty years, in the United States have built high up to 44 layers, therefore. This technology already formed a system, the bonding layer, heatinsulating layer and facing layer supporting the use, more mature technical documents。5) the whole system has good weatherability, good waterproof and water vapor permeability。3) suitable for cold insulation on the special requirements of the building, and can also be used for exterior wall facing material for brick or stone building,4) as a result of extruded polystyrene and the base wall fixing mode of soil using mechanical fastener. In winter the normal construction. At present. In Beijing, the river runs and other regions have to use this material for outer wall external thermal insulation construction, such as the Beijing New Oriental Plaza, Bank of China and other large public buildings. But the extruded polystyrene price is on the high side, thus is suitable for higher grade of the building. The construction technology and node structure needs to be further perfected. The 3single side steel mesh polystyrene board with the exterior wall external insulation This is developed in recent years, used for castinplace concrete construction of external wall insulation system, a kind of liu. It has the following advantages:1) this system in the construction of. The steel mesh polystyrene board is arranged to pouring wall inside an external mold, external insulation board and the wall a survival, after stripping the insulation board and the wall be made one, thus saving manpower, time and cost of installation。2) thermal insulation mortar for exterior wall thermal insulation, the basic wall roughness requirement is not high, easy in the shape of the basal wall construction。 thermal conductivity than the metallic material。國家建設(shè)部在 1995 年頒布了《城市建筑節(jié)能實施細(xì)則》等文件 ,把《民用建筑節(jié)能設(shè)計標(biāo)準(zhǔn)〈采暖居住建筑部分〉》 JGJ2695 列為強制性標(biāo)準(zhǔn) ,同時建設(shè)部又于 2020 年 10 月 1 日發(fā)布了第 76 號令《民用建筑節(jié)能管理規(guī)定》 ,對不符合節(jié)能標(biāo)準(zhǔn)的項目 ,不得批準(zhǔn)建設(shè)。 一、外墻保溫技術(shù) 節(jié)能保溫墻體施工技術(shù)主要分為外墻內(nèi)保溫和外墻外保溫兩大類。內(nèi)保溫應(yīng)用時間較長 ,技術(shù)成熟 ,施工技術(shù)及檢驗標(biāo)準(zhǔn)是比較完善的。內(nèi)保溫在技術(shù)上的不合理性 ,決定了其必然要被外保溫所替代。外保溫技術(shù)不僅適用于新建的結(jié)構(gòu)工程 ,也適用于舊樓改造 ,適用于范圍廣 ,技術(shù)含量高 。 目前比較成熟的外墻保溫技術(shù)主要有以下幾種。這種外掛式的外保溫安裝費時 ,施工難度大 ,且施工占用主導(dǎo)工期 ,待主體驗收完后才可以進行施工。由于外墻主體與保溫層一次成活 ,工效提高 ,工期大大縮短 ,且施工人員的安全性得到了保證。這種做法有如下的優(yōu)越性： 1)由于它在歐洲及美國已沿用了近三十年，在美國已建成的建筑高達(dá) 44 層，因此。這種做法在北京、東北等地已得到廣泛的應(yīng)用，北京裕京花園、臥龍花園、建設(shè)部丙八、丙十樓的改造等許多工程，均采用了這種做法。這種材料的優(yōu)點在于： 1)擠塑聚苯乙烯具有致密的表層及閉孔結(jié)構(gòu)內(nèi)層。在冬季可照常施工。其施工工藝和節(jié)點構(gòu)造尚有待于進一步完善 。冬季可照常施工； 4)聚苯板外側(cè)掛有鋼絲網(wǎng)，外飾面可用面磚。 目前，北京地區(qū)已有多幢多層建筑外墻外保溫采用了保溫膏料，如現(xiàn)代文學(xué)館等。應(yīng)根據(jù)所設(shè)計的建筑的造價、地理位置等各方面的因素進行選擇 。隨著世界范圍內(nèi)能源的日趨緊張 ,絕熱材料在節(jié)能方面的意義日顯突出。 能。氣態(tài)物質(zhì)的導(dǎo)熱系數(shù)小于液態(tài)物質(zhì) ,液態(tài)物質(zhì)小于固體。 。巖棉不燃燒 ,價格較低 ,在滿足保溫隔熱性能的同時還能夠具有一定的隔聲效果。節(jié)能材料的發(fā)展又必須與外墻保溫技術(shù)相結(jié)合 ,才能真正發(fā)