水运工程
水運工程
수운공정
Port & Waterway Engineering
2015年
8期
123-126
,共4页
配合比设计%矿物掺合料%粉煤灰%最佳砂率%骨料级配
配閤比設計%礦物摻閤料%粉煤灰%最佳砂率%骨料級配
배합비설계%광물참합료%분매회%최가사솔%골료급배
mix proportion design%mineral admixture%fly ash%optimal sand ratio%aggregate gradation
富春江船闸扩建改造工程混凝土浇筑方量大，结构复杂，耐久性要求高，混凝土裂缝控制要求严格。混凝土配合比设计通过骨料级配优化试验，选取最佳骨料级配；采用大掺量矿物合料技术路线，在混凝土中掺用矿粉和粉煤灰，降低水泥用量，降低混凝土水化热温升；通过试验选择最佳砂率，以提高混凝土体积稳定性，减少收缩；提高混凝土抗裂性能。
富春江船閘擴建改造工程混凝土澆築方量大，結構複雜，耐久性要求高，混凝土裂縫控製要求嚴格。混凝土配閤比設計通過骨料級配優化試驗，選取最佳骨料級配；採用大摻量礦物閤料技術路線，在混凝土中摻用礦粉和粉煤灰，降低水泥用量，降低混凝土水化熱溫升；通過試驗選擇最佳砂率，以提高混凝土體積穩定性，減少收縮；提高混凝土抗裂性能。
부춘강선갑확건개조공정혼응토요축방량대，결구복잡，내구성요구고，혼응토렬봉공제요구엄격。혼응토배합비설계통과골료급배우화시험，선취최가골료급배；채용대참량광물합료기술로선，재혼응토중참용광분화분매회，강저수니용량，강저혼응토수화열온승；통과시험선택최가사솔，이제고혼응토체적은정성，감소수축；제고혼응토항렬성능。
Fuchunjiang river lock expansion and improving project is featured with a large quantity of concrete pouring,complex structure and high requirements on the durability,and the concrete cracks are required to be controlled strictly.For the concrete mix proportion design,we select the best aggregate gradation based on the aggregate gradation optimization test,use a large amount of mineral admixtures by mixing concrete with slag and fly ash to reduce the dosage of cement and control the rise of concrete heat of hydration temperature;By tests,we choose the optimal sand ratio to improve the volume stability of concrete and reduce shrinkage,and improve the crack resistance of concrete.
