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近两年来,混凝土早强剂的使用在国内各地和我局各单位引起了普遍重视。试验和使用实践表明,采用早强剂、活化剂等化学附加剂,施工简便,效果显著,不仅能够提高混凝土的早期强度,加速施工进度,有利于冬季施工,而且有可能为节约水泥和配制高标号混凝土开辟新的途径,因而对于落实毛主席关于“抓革命,促生产,促工作,促战备”的伟大方针,多快好省地完成基本建设任务具有重大意义。现将我局和兄弟单位有关试验和使用早强剂的部分资料汇编于后,供我局各基层单位学习参考。要求我局科研和施工单位,结合北京地区具体情况,在实践过程中,加强试验研究,加强科学管理,注意积累资料,认真总结经验,为进一步推广采用早强剂创造条件。
In the past two years, the use of concrete early strength agents has attracted widespread attention throughout the country and in various units of the Bureau. Tests and use practices have shown that the use of early-strength agents, activators and other chemical additives, construction is simple, significant results, not only can improve the early strength of concrete, speed up the construction progress, is conducive to winter construction, and may be to save cement and high preparation The marking of concrete has opened up new avenues. Therefore, it is of great significance for Chairman Mao to implement the great principle of “grasping the revolution, promoting production, promoting work, and preparing for war” and accomplishing the basic construction tasks more quickly and efficiently. The relevant information on the trial and use of the early strength agent in our bureau and the fraternal unit is now compiled for reference by the grassroots units of the Bureau. Requested the Bureau’s scientific research and construction units to combine the specific conditions of the Beijing area, strengthen experimental research in the course of practice, strengthen scientific management, pay attention to accumulating data, and earnestly sum up experience in order to further promote the use of early strength agents to create conditions.