在建筑工地经常要打灰土。有人认为不就是白灰加上土吗?没有什么。其实不然,内中大有文章。灰上是我国一项传统的建筑技术。早在1000多年前,我国劳动人民就把灰土广泛应用于建筑、墓、桥梁、坝等工程中,并在清朝雍正14年,对灰土的使用列入了《工程做法则例》中,因此,它是我国宝贵的历史遗产。 Dust often hits the construction site. Does anyone think that it is not white dust plus soil? There is nothing. In actual fact, there is an article in the university. Ash is a traditional building technology in China. As early as more than 1,000 years ago, the working people of our country had widely used lime soil in construction, tombs, bridges, and dams. In the 14th year of Yongzheng of the Qing Dynasty, the use of lime soil was included in the “Engineering Practices Ordinance”. Therefore, It is a valuable historical heritage of our country.