德国一些建筑公司近年来采用了一种新式建房法:砌墙时不用预制砖和石块,而是用装有水泥混合物的口袋。口袋用密度不大的合成纤维材料制成,混合物是10∶1的水泥和沙子。口袋装满混合物后,浸泡在水里一会儿,然后象砌墙砖一样垛起来,口袋一个压一个,这样一部分水泥就会从口袋的细孔里渗 In recent years, some German construction companies have adopted a new construction method: Instead of using prefabricated bricks and stones, walls are built with cement mix pockets. The pockets are made of a low density synthetic fibre material and the mixture is 10:1 cement and sand. After filling the pocket with the mixture, soak it in the water for a while, and then pick it up like a brick wall and press one of the pockets. This part of the cement will seep through the pores of the pocket.