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A platform for research: civil engineering, architecture and urbanism
Self-compacting concrete preparation method based on shear thinning and thickening effects and prepared self-compacting concrete
The invention discloses a preparation method of self-compacting concrete based on shear thinning and thickening effects and the prepared self-compacting concrete. The self-compacting concrete is prepared by stirring cement, fly ash, water, sand, stones, a shear thinning agent, a shear thickening agent and a glass microsphere starch solution according to a certain sequence, wherein the water, a cementing material and the shear thinning agent are added in batches; firstly, uniform mixing of wrapping neat paste and aggregate is achieved through the shear thinning effect, secondly, the wrapping thickness of the wrapping neat paste on the aggregate is increased through the shear thickening effect, and then uniform mixing with the aggregate is achieved under the effect of the shear thinning effect by doping secondary neat paste. And the self-compacting concrete is prepared by adjusting the rotating speed and doping the glass microsphere starch turbid liquid in a matched manner. According to the invention, the shear thinning and thickening effects of the neat concrete paste and the mixture are fully utilized, the production process of the self-compacting concrete is improved, and the performance of the self-compacting concrete is improved.
本发明公开了一种基于剪切稀化与稠化效应的自密实混凝土制备方法及制得的自密实混凝土。本发明所述自密实混凝土由水泥、粉煤灰、水、砂子、石子、剪切稀化剂、剪切稠化剂、玻璃微球淀粉溶液按一定次序搅拌得到，水、胶凝材料及剪切稀化剂分批次加入；首先通过剪切稀化效应实现包裹净浆与骨料混合均匀，其次通过剪切稠化效应提高包裹净浆对骨料的包裹厚度，之后通过二次净浆的掺入，在剪切稀化效应的作用下实现与骨料之间的均匀混合，并通过调整转速、配合掺入玻璃微球淀粉悬浊液制备得到自密实混凝土。本发明通过对混凝土净浆和拌和物剪切稀化和稠化效应的充分利用，改进自密实混凝土生产工艺，实现自密实混凝土性能的提升。
Self-compacting concrete preparation method based on shear thinning and thickening effects and prepared self-compacting concrete
The invention discloses a preparation method of self-compacting concrete based on shear thinning and thickening effects and the prepared self-compacting concrete. The self-compacting concrete is prepared by stirring cement, fly ash, water, sand, stones, a shear thinning agent, a shear thickening agent and a glass microsphere starch solution according to a certain sequence, wherein the water, a cementing material and the shear thinning agent are added in batches; firstly, uniform mixing of wrapping neat paste and aggregate is achieved through the shear thinning effect, secondly, the wrapping thickness of the wrapping neat paste on the aggregate is increased through the shear thickening effect, and then uniform mixing with the aggregate is achieved under the effect of the shear thinning effect by doping secondary neat paste. And the self-compacting concrete is prepared by adjusting the rotating speed and doping the glass microsphere starch turbid liquid in a matched manner. According to the invention, the shear thinning and thickening effects of the neat concrete paste and the mixture are fully utilized, the production process of the self-compacting concrete is improved, and the performance of the self-compacting concrete is improved.
本发明公开了一种基于剪切稀化与稠化效应的自密实混凝土制备方法及制得的自密实混凝土。本发明所述自密实混凝土由水泥、粉煤灰、水、砂子、石子、剪切稀化剂、剪切稠化剂、玻璃微球淀粉溶液按一定次序搅拌得到，水、胶凝材料及剪切稀化剂分批次加入；首先通过剪切稀化效应实现包裹净浆与骨料混合均匀，其次通过剪切稠化效应提高包裹净浆对骨料的包裹厚度，之后通过二次净浆的掺入，在剪切稀化效应的作用下实现与骨料之间的均匀混合，并通过调整转速、配合掺入玻璃微球淀粉悬浊液制备得到自密实混凝土。本发明通过对混凝土净浆和拌和物剪切稀化和稠化效应的充分利用，改进自密实混凝土生产工艺，实现自密实混凝土性能的提升。
Self-compacting concrete preparation method based on shear thinning and thickening effects and prepared self-compacting concrete
一种基于剪切稀化与稠化效应的自密实混凝土制备方法及制得的自密实混凝土
WANG LIJIANG (author) / LIU BENLI (author) / LI WEIJIAN (author) / ZHANG PENG (author) / JIANG SHENGBAO (author) / CHEN AQI (author)
2023-12-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Why is fresh self-compacting concrete shear thickening?
| British Library Online Contents | 2009
Fresh self compacting concrete, a shear thickening material
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Why is fresh self-compacting concrete shear thickening?
| Online Contents | 2009
Fresh self compacting concrete, a shear thickening material
| Elsevier | 2008
Why is fresh self-compacting concrete shear thickening?
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