A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Multifunctional concrete synergist and preparation method thereof
The invention discloses multifunctional concrete synergist and a preparation method thereof. The multifunctional concrete synergist is mainly prepared by the followings steps: performing the etherification reaction on starch and an alkyl etherifying agent at 30-70 DEG C for 8.0-18.0 hours to obtain a starch-based alkyl etherification product; performing the etherification reaction on the starch-based alkyl etherification product with unsaturated acid and triethanolamine to obtain an esterification product 1; performing the etherification reaction on unsaturated acid and triisopropanolamine to obtain an esterification product 2; performing grafting reaction on the esterification product 1 and the esterification product 2 in a reaction kettle at 50-90 DEG C for 1.0-4.0 h. The density of the multifunctional concrete synergist is 1.005+/-0.020, the pH value of the multifunctional concrete synergist is 10.0+/-1.0, the chlorine ion content of the multifunctional concrete synergist is less than or equal to 0.30%, the sulfate ion content of the multifunctional concrete synergist is less than or equal to 1.00%, and the alkali content of the multifunctional concrete synergist is less than or equal to 1.00%. The multifunctional concrete synergist is mainly used for improving the peaceability of concrete, reducing bleeding and pumping resistance and improving the comprehensive property of concrete.
Multifunctional concrete synergist and preparation method thereof
The invention discloses multifunctional concrete synergist and a preparation method thereof. The multifunctional concrete synergist is mainly prepared by the followings steps: performing the etherification reaction on starch and an alkyl etherifying agent at 30-70 DEG C for 8.0-18.0 hours to obtain a starch-based alkyl etherification product; performing the etherification reaction on the starch-based alkyl etherification product with unsaturated acid and triethanolamine to obtain an esterification product 1; performing the etherification reaction on unsaturated acid and triisopropanolamine to obtain an esterification product 2; performing grafting reaction on the esterification product 1 and the esterification product 2 in a reaction kettle at 50-90 DEG C for 1.0-4.0 h. The density of the multifunctional concrete synergist is 1.005+/-0.020, the pH value of the multifunctional concrete synergist is 10.0+/-1.0, the chlorine ion content of the multifunctional concrete synergist is less than or equal to 0.30%, the sulfate ion content of the multifunctional concrete synergist is less than or equal to 1.00%, and the alkali content of the multifunctional concrete synergist is less than or equal to 1.00%. The multifunctional concrete synergist is mainly used for improving the peaceability of concrete, reducing bleeding and pumping resistance and improving the comprehensive property of concrete.
Multifunctional concrete synergist and preparation method thereof
CHEN ZHENXI (author) / ZHENG FUER (author) / LIU JIANFENG (author) / MAO XIE (author) / LIU MINGHUA (author) / WANG WEIFENG (author)
2015-04-01
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME