曹俊峰,徐利剑,戴国强.钻芯法检测农田水利工程预制薄壁构件混凝土强度探讨[J].江西水利科技,2019,(6): |
钻芯法检测农田水利工程预制薄壁构件混凝土强度探讨 |
Study on core-drilling test concrete strength of the precast thin-walled members in irrigation and drainage engineering |
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DOI: |
中文关键词: 钻芯法 粒径 农田水利 薄壁构件 |
英文关键词: Core drilling method Diameter Farmland water conservancy Thin-walled members |
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中文摘要: |
钻芯法检测混凝土强度时,骨料粒径决定了芯样的直径,芯样直径最少要为2倍以上骨料粒径.以农田水利工程薄壁构件为例,研究20mm细石粒径骨料的预制构件混凝土实体强度检测方法,在尽量减少骨料粒径因素的前提下,研究了40mm芯样直径与28d龄期150mm试块强度的关系,并推定了该直径芯样的对数函数关系式及相应曲线.可为混凝土预制构件小直径芯样强度检测方法提供一定的借鉴. |
英文摘要: |
Aggregate size determines core sample diameter in the concrete strength inspection by core drilling method,and the core sample diameter is 2 times higher than the aggregate size.Taking the thin-walled member of irrigation and drainage engineering as an example,this paper has studied the test methods of concrete strength of the precast element which composed of fine aggregate with a diameter of 20mm.In addition,the relation between the core sample with a diameter of 40mm and the strength of 28d cube specimens with a dimension of 150 mm has been studied.The logarithmic function relation and corresponding curves of the core sample with a diameter of 40mm have been put forward.It provides reference for the test methods of concrete strength of small diameter precast element. |
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