一、前言人们的大部分时间是在建筑物室内度过的。随着科学的发展和人们对幅射防护认识水平的提高,建材产品的放射性问题,已引起人们的关注,并直接影响了它的生产和销售。本来,放射现象在自然界中从来就有,而且广泛存在。整个生物界,包括人类,就是在这个普遍存在着放射性物质的环境中发生、发展和进化的。然而,由于科学的发展,发现高剂量的放射性照射对人体健康带来危害,特别 I. INTRODUCTION People spend most of their time in building interiors. With the development of science and people’s increasing awareness of radiation protection, the radioactive problem of building materials products has aroused people’s attention and directly affected its production and sales. Originally, radiological phenomena have always existed in nature and are widespread. The entire biological community, including human beings, occurs, develops, and evolves in this ubiquitous environment of radioactive material. However, due to the development of science, it has been found that high-dose radioactive radiation is harmful to human health, especially