西北水电
西北水電
서북수전
Northwest Water Power
2015年
5期
71-74
,共4页
查日扣水电站%混凝土配合比%骨料碱活性
查日釦水電站%混凝土配閤比%骨料堿活性
사일구수전참%혼응토배합비%골료감활성
Charikou Hydropower Project%concrete mix ratio%aggregate alkali activity
查日扣水电站地处高原寒冷地区，经试验天然砂为具有潜在碱－硅酸反应的活性骨料，天然砾石为不具有潜在碱－硅酸反应的非活性骨料，天然砂掺入不低于20％的粉煤灰可有效抑制碱－硅酸反应。经各标号混凝土配合比参数选择与混凝土性能试验研究，初选各标号混凝土拌和性能较好，抗压强度、抗冻、抗渗及极限拉伸值均满足规范要求。
查日釦水電站地處高原寒冷地區，經試驗天然砂為具有潛在堿－硅痠反應的活性骨料，天然礫石為不具有潛在堿－硅痠反應的非活性骨料，天然砂摻入不低于20％的粉煤灰可有效抑製堿－硅痠反應。經各標號混凝土配閤比參數選擇與混凝土性能試驗研究，初選各標號混凝土拌和性能較好，抗壓彊度、抗凍、抗滲及極限拉伸值均滿足規範要求。
사일구수전참지처고원한랭지구，경시험천연사위구유잠재감－규산반응적활성골료，천연력석위불구유잠재감－규산반응적비활성골료，천연사참입불저우20％적분매회가유효억제감－규산반응。경각표호혼응토배합비삼수선택여혼응토성능시험연구，초선각표호혼응토반화성능교호，항압강도、항동、항삼급겁한랍신치균만족규범요구。
Charikou Hydropower Project is located in the plateau and cold region.Approved by tests, the natural sand here is the active one with potential alkali-silicic acid reaction.The natural gravel is the non-active one without potential alkali-silicic acid reaction.The alkali-silicic acid reaction can be restrained by mixing 20% flyash in the natural sand.Through selection of concrete with different classes and study of the concrete performance tests.The selected concrete with different classes is with the expected mixing performance.Their compressive strength, freezing resistance, impermeability and ultimate extension all satisfy requirement.
