Welcome to Biomass Chemical Engineering,

›› 2006, Vol. 40 ›› Issue (1): 13-16.

• 研究报道 • Previous Articles     Next Articles

Study on Technology of Modified Aminosulfonic Acid-based Superplasticizer by Vegetable Tannin

JIANG Xin-yuan1, CHEN Qian-wen1, WAN Xiao-qing2   

  1. 1. College of Technology, Central South Forestry University, Changsha 410004, China;2. Library, Central South Forestry University, Changsha 410004, China
  • Received:2005-07-13 Revised:1900-01-01 Online:2006-01-30 Published:2006-01-30

Abstract: In this paper the modifying technology of vegetable tannin in place of phenol partially to produce aminosulfonic acid-based superplasticizer was studied.The result indicates that the better modified technological conditions are as follow:mass percent of vegetable tannin to total vegetable tannin and phenol is between (25%)-(37.5%),reaction time is about (3 h),temperature is about (90℃),and pH is between 9.0-11.0.The modified product has a little worse dispersing capability than that of(unmodified) product,but its slump loss is a little bigger.When the dosage in cement is (0.5%),and the water-cement ratio is(0.28 :1),the fluidity of cement paste added modified and unmodified product is 240 and (252 mm),respectively.

Key words: vegetable tannin, phenol, aminosulfonic acid, superplasticizer

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