Performance Test on Shielding Concrete
-
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。Abstract: 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 γ 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.
-
Key words:
- Shielding concrete /
- Performance test /
- Influencing factor /
- Rule
-
计量
- 文章访问数: 4
- HTML全文浏览量: 1
- PDF下载量: 0
- 被引次数: 0