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GB11818-89《混凝土钻孔取芯机技术条件》业经国家技术监督局批准发布,自1990年7月1日起实施。下面对该标准作一简要介绍。一、制定标准的必要性钻孔取芯机是对混凝土路面抗折强度测定的必要设备,它广泛地应用于公路建设、机场建设、建筑施工、室内安装等各个领域。应用该机取得混凝土试件,通过测定试
GB11818-89 “Concrete Drilling Coring machine technical conditions” by the State Bureau of Technical Supervision approved the release, since July 1, 1990 come into operation. The following is a brief introduction to the standard. First, the need to develop standards Drilling core machine is the necessary equipment for measuring the flexural strength of concrete pavement, it is widely used in highway construction, airport construction, construction, indoor installation and other fields. Application of the machine to obtain concrete specimens, through the test test