摘要
采用普通硅酸盐水泥及我国生产的粗、细骨料配制屏蔽混凝土试样,用正交设计试验方法和回归分析方法,研究用水量、砂率、水灰比对屏蔽混凝土性能的影响,以及与普通混凝土性能差异。试验表明,抗压强度随水灰比的增大而减小,呈现线性关系,影响最显著;其次是骨料的种类;龄期对屏蔽混凝土密度值影响不明显。各影响因素对屏蔽γ射线的屏蔽混凝土的密度、坍落度和抗压强度的影响及其变化规律,与对屏蔽中子射线的有相似之处。屏蔽混凝土与普通混凝土的力学性能变化规律相同。
The cylinder of the shielding concrete is made from common Portland cement and home-made coarse or fine aggregates. Orthogonal design experiment and regression analysis are adopted. to study the effects of the water content, sand percentage and water-cement ratio on the property of shielding concrete and the difference between them. The test shows that the tensile strength is in inverse proportion with water-cement ratio, and the influence is quite significant. Another factor is the type of aggregates. The effect of the age on its density is not obvious. Similarly, the concrete shielding 3＇ rays shares the same influencing factors with that shielding neutron rays on density, slump and tensile strength. And both have the same change rules regarding to mechanical property.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2009年第3期141-144,共4页
Nuclear Power Engineering
基金
国防基础科研项目(k0203040201)
关键词
屏蔽混凝土
性能试验
影响因素
规律
Shielding concrete, Performance test, Influencing factor, Rule
