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关键性工艺和措施是:优化混凝土配合比,采用机制石灰岩人工砂石料,碎石按80mm~40mm,40mm~20mm,20mm~5mm分级,大石;中石:小石组合比例为30∶40∶30,人工砂石料合石粉量12%~15%,水泥用量55kg/m3,高掺粉煤灰105kg/m3,占胶凝材料66.4%,掺用TF减水缓凝剂,混凝土Vc为15s±5s。投料顺序为碎石→水泥→水、外加剂→砂、粉煤灰,拌和时间150s~180s。缆车或汽车直接入仓或皮带机运料入仓,汽车转料。层面结合允许间隔时间为混凝土的初凝时间。碾压根据震动碾各自性能和振激力大小而定。坎身排水孔采用人工拔管造孔。常态混凝土和碾压混凝土(RCC)同步上升。常态混凝土浇筑温度控制在15℃~16℃,RCC控制在25℃以内。
The key technologies and measures are: optimizing the mix ratio of concrete, using artificial limestone for mechanism limestone, gravel according to 80mm ~ 40mm, 40mm ~ 20mm, 20mm ~ 5mm grading, Dashi; medium stone: small stone combination ratio of 30:40:30, artificial Gravel stone aggregate powder 12%~15%, cement content 55kg/m3, high fly ash 105kg/m3, accounting for 66.4% of cementitious material, mixed with TF water-reducing retarder, concrete Vc is 15s±5s . The feeding sequence was gravel→cement→water, admixtures→sand and fly ash. The mixing time was 150s~180s. Cable cars or cars directly into the warehouse or belt conveyors into the warehouse, the car transfer. The level combination allows the interval time to be the initial setting time of the concrete. Rolling depends on the respective properties of vibratory mills and the magnitude of the vibratory forces. The body drain hole is artificially extubated. Normal concrete and roller compacted concrete (RCC) rise synchronously. Normal concrete pouring temperature control in 15 °C ~ 16 °C, RCC control within 25 °C.