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日本是最早开发和应用混凝土膨胀剂的国家,迄今年用量仅维持在6-7万吨,本文作者认为现在日本的商品混凝土生产量逐年降低,混凝土价格也在降低,用膨胀剂会增加成本,另外膨胀剂的使用效果无法定量的显现,这些是影响膨胀剂广泛应用的因素。作者认为,目前膨胀剂效果的定量评价技术有很大的进步,并对此作了相应的介绍。文章认为,除了传统的补偿混凝土干燥收缩、大体积混凝土收缩外,在降低高强混凝土自收缩也有非常好的效果。这篇文章对我国混凝土膨胀剂行业的发展具有很好的借鉴作用。
Japan is the earliest country to develop and apply concrete expanders. As of this year, the quantity used only maintains between 60,000 and 70,000 tons. According to the author, the production volume of commercial concrete in Japan is declining year by year and the price of concrete is also decreasing. Expansion agents will increase costs, In addition the use of expansive agent can not be quantified, these are the factors that affect the extensive use of expansive agent. The author believes that the current quantitative evaluation of expansive agent technology has made great progress, and made a corresponding introduction. The article holds that, in addition to the traditional compensation of concrete drying shrinkage, shrinkage of mass concrete, in reducing high-strength concrete self-contraction also has very good results. This article has a good reference for the development of China's concrete expander industry.