期刊论文

RESEARCH ON THE EFFECT OF LEAD-ZINC TAILINGS SAND ON THE SHIELDING PERFORMANCE OF CONCRETE TO GAMMA RAY

中文

工业建筑

1000-8993

2019

49

12

133-137

10.13204/j.gyjz201912023

国家自然科学基金项目（51678286,51479098）； 湖南省自然科学基金项目（2016JJ2107）； 湖南省教育厅科研项目（14C0971）；

本校为第一机构

按0%、20%、40%、60%、80%、100%的比例以铅锌尾矿砂替代普通河砂,制备铅锌尾矿砂混凝土。对铅锌尾矿砂混凝土进行伽马射线屏蔽性能测试以及坍落度、抗压强度等试验,并与普通混凝土进行比较。试验结果表明:随着尾矿砂掺量的增加,伽马射线吸收系数μ逐渐增大,屏蔽性能更好,而坍落度有所下降,掺量增加到80%、100%时,坍落度的变化较大;同普通混凝土相比,用铅锌尾矿砂制备的混凝土强度会随着尾矿砂掺量的增加而降低,且幅度较大。

The lead-zinc tailings sand was replaced by ordinary proportion of 0%,20%,40%,60%,80% and 100% of the total mass of concrete fine aggregate to pour concrete specimens for testing γ-ray shielding performance,slump and compressive strength.The test results showed that with the increase of tailings sand content,the gamma ray absorption coefficient μ gradually increased,the better the shielding performance,and the slump decreased.When the displacement ratio increased to 80%,100%,the decrease of slump was more obviouse;compared with ordinary concr...