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Modified admixture for cement-based pervious concrete and preparation method of modified admixture
The invention discloses a modified admixture for cement-based pervious concrete and a preparation method of the modified admixture. The modified admixture comprises the following ingredients in parts by weight: 3 parts of industrial white sugar, 50 parts of hydroxymethyl cellulose, 5 parts of polyacrylamide, 3 parts of a triterpenoid saponin air entraining agent, 90 parts of an ether polycarboxylate superplasticizer and 849 parts of water. The preparation method comprises the following steps: weighing all ingredients in parts by weight and mixing all ingredients in a PP plastic container; leaving the mixture to stand for 20 minutes; stirring in a circulating manner for 20 minutes by using a circulating pump so as to obtain a modified admixture solution. The modified admixture for the cement-based pervious concrete has the benefits as follows: the modified admixture is formed through combination of organic macromolecular ingredients and ether water-reducing ingredients with slow release properties, so that the whole construction performance of pervious concrete is closer to that of asphalt concrete, meanwhile, aggregate joint and gap distribution properties are improved, and fine non-communication gaps are sealed, so that a communicating gap channel is optimized and preparation of middle-high strength pervious concrete is facilitated.
Modified admixture for cement-based pervious concrete and preparation method of modified admixture
The invention discloses a modified admixture for cement-based pervious concrete and a preparation method of the modified admixture. The modified admixture comprises the following ingredients in parts by weight: 3 parts of industrial white sugar, 50 parts of hydroxymethyl cellulose, 5 parts of polyacrylamide, 3 parts of a triterpenoid saponin air entraining agent, 90 parts of an ether polycarboxylate superplasticizer and 849 parts of water. The preparation method comprises the following steps: weighing all ingredients in parts by weight and mixing all ingredients in a PP plastic container; leaving the mixture to stand for 20 minutes; stirring in a circulating manner for 20 minutes by using a circulating pump so as to obtain a modified admixture solution. The modified admixture for the cement-based pervious concrete has the benefits as follows: the modified admixture is formed through combination of organic macromolecular ingredients and ether water-reducing ingredients with slow release properties, so that the whole construction performance of pervious concrete is closer to that of asphalt concrete, meanwhile, aggregate joint and gap distribution properties are improved, and fine non-communication gaps are sealed, so that a communicating gap channel is optimized and preparation of middle-high strength pervious concrete is facilitated.
Modified admixture for cement-based pervious concrete and preparation method of modified admixture
ZHANG XIAOGANG (author) / SUN YUE (author) / WANG QI (author) / FENG XIN (author)
2016-02-03
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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