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Preparation of Concrete Water-reducer by Oxidation and Sulfomethylation of Bamboo Pulping Black Liquor
  
DOI：10.11980/j.issn.0254-508X.2011.01.017
Key Words:black liquor  sulfomethylation  concrete water-reducer  fluidity
Fund Project:本课题得到公益性行业（农业）科研专项经费(200803033)；四川省青年基金(2010JQ0009)；四川省生物质改性材料工程技术研究中心课题（09zxbk04）资助。
Author NameAffiliation
何贵萍1 1.四川大学轻纺与食品学院,四川成都，610065 
吕思宁1 1.四川大学轻纺与食品学院,四川成都，610065 
刘一山1,2 1.四川大学轻纺与食品学院,四川成都，610065
2.四川工商职业技术学院，四川都江堰，611830 
周　建1,3 1.四川大学轻纺与食品学院,四川成都，610065
3. 西南科技大学，四川绵阳，621010 
何　强1 1.四川大学轻纺与食品学院,四川成都，610065 
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Abstract:Lignosulfonate was prepared as water-reducer via oxidation and sulfomethylation of bamboo alkaline-pulping black liquor. Results indicated that the water-solubility and surfactivity of lignin in black liquor can be effectively improved through the modification. The prepared lignosulfonate can be employed as a cost-effectively water-reducer in concrete industry, since it can reduce cement slurry viscosity so as to increase the fluidity by means of dispersing cement slurry floc and releasing the bound water. This work shows great significance in pollution prevention and the reuse of black liquor.
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