一、前言在伟大领袖毛主席“备战、备荒、为人民”和“提高警惕,保卫祖国”的伟大战略方针指引下,海岛和临海地区的国防工程将大量兴建;随着我国对外贸易和海洋捕捞渔业的飞速发展,沿海商港和渔港也将不断建设。这些工程,在许多情况下淡水来源缺乏,(甚至生活用水都感到不足)但由于海水对混凝土和钢筋混凝土的耐久性有危害,一向禁止使用海水拌 I. Foreword Under the great strategic guideline of “preparing for war, preparing for waste, for the people” and “vigilance and defending the motherland” of Chairman Mao, the island and the coastal areas will have a large number of national defense projects to be built. As China’s foreign trade and marine fishing The rapid development of fisheries, coastal commercial ports and fishing ports will continue to build. These projects, in many cases, have a shortage of fresh water sources (even domestic water is inadequate). However, since seawater is harmful to the durability of concrete and reinforced concrete, it is forbidden to use seawater