| 减水剂对新拌混凝土表观粘度的影响机理 |
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| 引用本文： | 卜景龙,傅翠晓.减水剂对新拌混凝土表观粘度的影响机理[J].河北理工大学学报（自然科学版）,2001,23(1). |
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| 作者姓名： | 卜景龙 傅翠晓 |
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| 作者单位： | 河北理工学院材料系, |
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| 摘 要： | 分析减水剂对新拌混凝土表观粘度的影响机理，指出减水剂是一种表面活性剂，它吸附在新拌混凝土的颗粒表面，降低颗粒表面自由能，增大ξ电位，从而增大了新拌混凝土颗粒的分散性，降低了表观粘度。另外，减水剂的掺入可使水泥颗粒湿润，可使水泥颗粒之间的滑动能力增强，因此降低了新拌混凝土的表观粘度。
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| 关 键 词： | 减水剂 新拌混凝土 表面粘度 |
The influencing mechanism of water-reducing age nt on the surface viscosity of fresh concrete |
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| BU Jing-long,FU Cui-xiao.The influencing mechanism of water-reducing age nt on the surface viscosity of fresh concrete[J].Journal of Hebei Institute of Technology(Natural Science Edition),2001,23(1). |
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| Authors: | BU Jing-long FU Cui-xiao |
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| Abstract: | The influencing mechanism of Water reducing a g ent on the appearance viscosity of fresh concrete was analyzed.It was stated th at Water-reducing Agent is a kind of surfactant,which can absorb the surface fresh concrete pellet.Thus it reduced the surface free-energy and enlarged ξ potential.Subsequently ξ the fresh con cret e pellet became much looser.And therefore,the appearance viscosity was reduced.I n addition,Water-reducing agent can moist the fresh concrete pellet and enfor ce the capability of slide between the fresh concrete pellet.So the appeance ves cosity of fresh concrete was reduced. |
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