摘要
随着新一代核电技术的发展,反应堆屏蔽层在防护X、γ射线的同时仍需防护中子射线.含硼防辐射混凝土是一种集合了辐射屏蔽功能和力学性能的辐射屏蔽材料,具有良好的适用性和经济优势.相较于传统防辐射混凝土,如何在添加含硼材料的应用条件下保证防辐射混凝土良好的工作性能、力学性能和耐久性是目前需要解决的问题.从原材料优选、配合比设计和性能表征等方面着手,以硼玻璃砂、碳化硼作为含硼材料,研究影响含硼高性能防辐射混凝土的关键技术要点,得到坍落度大于200 mm、强度高于40 MPa、表观密度大于3 350 kg/m3的含硼高性能防辐射混凝土,该结果可为含硼防辐射混凝土的广泛应用提供一定参考.
Abstract
In nuclear power technology,the shielding layer of the reactor is critical to protect against X、γ and neutron radiation.Anti-radiation concrete containing boron is a material that combines radiation shielding and mechanical properties,having effective applicability and economic advantages.Compared to conventional anti-radiation concrete,ensuring the working performance,mechanical properties,and durability of anti-radiation concrete under the application of adding boron materials can be an urgent issue to be solved.This paper started from the aspects of raw material selection,mix design,performance characterization,etc.,using boron glass sand and boron carbide as boron-containing materials,and studied the key technical points that affect boron-containing anti-radiation concrete.A boron-containing high-performance anti-radiation concrete with a slump larger than 200 mm,compressive strength greater than 40 MPa,and a bulk density greater than 3 350 kg/m3 was achieved,which gives a useful reference for the widespread application of boron-containing anti-radiation concrete.
NETL
NSTL
万方数据