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C30清水混凝土制备技术研究.doc

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C30清水混凝土制备技术研究.doc
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C30 , , , C30 , , , , ; ; ; ; (1983-) , , , , (973) (2015CB655105) Study on the preparation technology of C30 fair faced concrete Shi Liang Liu Yalian Zhang Zhifu Abstract In recent years, the requirements for fair faced concrete are increased rapidly in China. However, the relative research practice of how to realize the fair faced appearance of concrete structure relatively lacks. The engineering relies on large-scale experiments to explore the preparation technology. Combined with the practice of scientific research on the preparation technology of C30 concrete for a national key project, the influence of concrete mix proportion, types of admixture, release agents, types of vibration system for concrete color, bubble defects are systematically studied. The construction process and construction methods are also been discussed.The results provide relevant experiences for similar engineering construction and the technology references for the promotion of fair faced concrete. Keyword fair faced concrete; raw material; mix proportion; admixture; 0 , , , , , , , , , , , , , , , , C30 , , , , 1 1.1 : (1) : (2) : , 2.7; (3) :5-25 , ; (4) : I ; (5) :S95 ; (6) : , ( 1) 1 C30 (kg/m) 1.2 WISA 60 25 cm , Image-pro , : , 2 2.1 , , 2 , 18 cm, , 20 s 2 2 , (d>5 mm) ; , ; 2 , , , , , 0.315 mm , , , , , , , 2.2 , , 3 , 400 kg/m 39% , , 20 s 3 3 , , , , , , , , , , , , , , , , d>5 mm , , 4 , 400 kg/m 39% , 18 cm, , 20 s 4 4 , , , d>5 mm 4 , , , , , , , , , , , , , , , , , , 2.3 5 , 400 kg/m 39% , 18 cm 5 , 20 s 40 s, , , 60 s , 40 s , , , , , , , , 5 2.4 ( ) ( JK-500) , 6 , 400 kg/m 39% , 18 cm, 20 s 6 , , , , , , , 6 3 , C30 : (1) ; (2) , ; (3) ; (4) ; (5) , , , , 60 L , , [1] , . [J]. , 2007, 38 (1) :6-8. [2] , . [J]. , 2004, 35 (1) :54-55. [3] , . [J]. , 2006 (6) :77-79. [4] . ( ) [M]. : , 2006. [5] . [M]. : , 2006.
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