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新的民用建筑热工设计规程的颁发,对于砖混建筑而言,若想以增加其墙体厚度来增加热阻达到节能的目的,在当今是无法实现的。如在哈尔滨、牡丹江等地,墙体要增加到2.5B厚才能满足建筑热工的基本要求,就是多排孔浮石粉煤灰小型空心砌块(下称小砌块)也要在40～50cm厚度,才能达到低限热阻值指标。要想满足经济热阻,势必还要增加厚度,同样会带来材料耗量大,地基荷载增加,相应使用面积减少等,是很不经济的。因此采用多排孔小砌块再复合高效保温材料其保温、节能效果就突出了。
The issuance of new thermal engineering design rules for civil buildings is not achievable today for brick-concrete buildings if it is to increase the wall thickness to increase the thermal resistance and save energy. Such as in Harbin, Mudanjiang and other places, the wall should be increased to 2.5B thick to meet the basic requirements of building thermal engineering, that is, multiple rows of holes pumice fly ash small hollow blocks (hereinafter referred to as small blocks) also in 40 ~ 50cm The thickness can reach the lower limit thermal resistance index. To meet the economical thermal resistance, it is bound to increase the thickness. It will also bring about large material consumption, increased ground load, and a corresponding reduction in the use of area, which is very uneconomical. Therefore, the use of multiple rows of small blocks and composite high-efficiency insulation materials, the heat preservation, energy-saving effect is outstanding.