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萘系减水剂是一种由甲醛与萘合成的高效能混凝土外加剂。六十年代在国内外得到了广泛的应用,有良好的技术效果。但是由于甲醛和萘都是化学工业的重要原料,且价格较贵,从而提高了混凝土制品的成本。为了降低萘系减水剂的成本,扩大其原材料的来源,太钢施工技术处试验室利用煤矿瓦斯制造的瓦斯甲醛代替甲醛,用炼焦废渣-萘代替工业萘或精萘合成了混凝土减水剂。其配合比(克分子比) 为工业硫酸:萘:瓦斯甲醛=1.3:1:0.7。两年多以来,该减水剂已被太钢、临钢、山西省
Naphthalene water reducer is a high performance concrete admixture synthesized from formaldehyde and naphthalene. In the 1960s, it has been widely used at home and abroad, and has good technical results. However, since formaldehyde and naphthalene are important raw materials for the chemical industry, and the price is relatively expensive, the cost of concrete products is increased. In order to reduce the cost of naphthalene water reducer and expand the source of raw materials, the laboratory of TISCO used the gas formaldehyde produced from coal mine gas instead of formaldehyde, and synthetic concrete water reducer was replaced by coke cinder naphthalene instead of industrial naphthalene or refined naphthalene. . Its compounding ratio (molar ratio) is industrial sulfuric acid:naphthalene:gas formaldehyde=1.3:1:0.7. For more than two years, the water reducing agent has been Taigang, Linfen, Shanxi Province