中文摘要：

基于MCNP5对含有不同比例的CRT的普通混凝土的屏蔽能力进行了研究。通过模拟137 CS源放出能量为0．662 MeV的γ射线穿过不同厚度的不同屏蔽体，得出γ射线穿过不同屏蔽体的透射光谱、线衰减系数和透射比。模拟分析结果表明：随着CRT部分比例的增加，出射光谱逐渐降低，线衰减系数逐渐增大，透射比逐渐减小，同时发现将CRT部分比例占到9％时制造出来的混凝土的屏蔽性能和纯CRT的屏蔽效果相同。研究结果为将报废CRT的回收提供了市场，也为制造抗辐射混凝土减小了代价，同时也为环境治理提供了一条途径。

英文摘要：

The ability of shielding of ordinary concrete containing different proportions of the CRT is based on MCNP5.By simulating what γ-ray of energy 0.662 MeV of 137 CS source go through different thickness and shielding , obtaining different γ-ray emission spectrum , line attenuation coefficient and transmittance of the shielding .Results of simulation show that the emission spectrum gradually reduce ,the line attenuation coeffi-cient is gradually increased , the transmittance gradually decreases with the CRT of the ratio of the part increas -ing, and found when some of the shielding performance ratio CRT manufactured accounted for 9%, ability of shielding of concrete is similar to the pure CRT .Not only will research results provide market of recycling scrap CRT, but also it reduce the price for the manufacture of concrete of anti -radiation, but also for environmental governance provides a way .