The additional annual average doses, which are caused by γ radiation and potential alpha rays of 222 Rn in the bone coal cinder brick house indoors and outdoors of the five provinces, are 1 mSv and 3 mSv, respectively. 居住在碳化砖房内居民,因室内、外γ照射和吸入氡子体所致的人均年附加剂量分别约为1mSv和3mSv;
Analysis and avoidance of wall cracks of the hollow backfilling coal cinder brick 煤渣空心砖填充墙体裂缝分析与预防
The cinder brick is a new type building materials which is made from cinder and cement. 炉渣砖是以炉渣、水泥为主要原料生产的一种新型建筑材料。