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Chinese Journal of Chemical Education  
  Chinese Journal of Chemical Education--2002, 23 (4)   Published: 18 February 2002
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The Fifth Constituent of Concrete--Chemical Additive

Qian Weizhong
Chinese Journal of Chemical Education. 2002, 23 (4): 1-2,16.
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Concrete chemical additive has been increasingly and widely used in the construction with concrete. As a resuly, it has been regarded as the fifth constituent of concrete.This paper introduces the major types and functioning mechanisms of concrete chemical additives, together with the matters needing attention to in their usage.

Chinese Journal of Chemical Education. 2002, 23 (4): 3-3.
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Chinese Journal of Chemical Education. 2002, 23 (4): 4-10,16.
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Chinese Journal of Chemical Education. 2002, 23 (4): 11-13.
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Chinese Journal of Chemical Education. 2002, 23 (4): 14-16.
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Chinese Journal of Chemical Education. 2002, 23 (4): 17-18.
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Chinese Journal of Chemical Education. 2002, 23 (4): 19-19.
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Chinese Journal of Chemical Education. 2002, 23 (4): 20-24,46.
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Chinese Journal of Chemical Education. 2002, 23 (4): 25-27.
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Chinese Journal of Chemical Education. 2002, 23 (4): 28-29,30.
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Chinese Journal of Chemical Education. 2002, 23 (4): 30-32.
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Chinese Journal of Chemical Education. 2002, 23 (4): 33-35.
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Chinese Journal of Chemical Education. 2002, 23 (4): 36-39.
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Chinese Journal of Chemical Education. 2002, 23 (4): 40-41,42.
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Chinese Journal of Chemical Education. 2002, 23 (4): 42-42.
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Chinese Journal of Chemical Education. 2002, 23 (4): 43-43.
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Chinese Journal of Chemical Education. 2002, 23 (4): 44-46.
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Chinese Journal of Chemical Education. 2002, 23 (4): 47-48.
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