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A platform for research: civil engineering, architecture and urbanism
Slurry purifying agent for ultra-high performance concrete and preparation method of slurry purifying agent
The invention provides a slurry purifying agent for ultra-high performance concrete and a preparation method of the slurry purifying agent. The preparation method comprises the following steps: modifying fly ash by using cellulose or sodium salt thereof, a boric acid ester coupling agent, tributyl phosphate and ethylene glycol in a ball mill; the modified fly ash, unsaturated ester, an initiator, a chain transfer agent and other monomers are synthesized into the slurry extracting agent in a high-speed shearing emulsifying machine, the limitation of solubility on the reaction is overcome through a mechanochemical method, and a new direction is provided for high-value utilization of the fly ash. The synthesized ultra-high performance concrete slurry extracting agent can achieve the effects of cement dispersion, water retention and thickening, smooth slurry extraction, suspension homogenization, wiredrawing self-leveling and the like at a low water-binder ratio, and can improve the workability and wrapping property of concrete. When the grouting agent is added into concrete added with low-quality components, the shrinkage rate of the concrete can be reduced, the risk of cracking of the concrete is reduced, and the strength and durability of the concrete are improved.
本发明提供了一种超高性能混凝土用提浆剂及其制备方法，本发明在球磨机中使用纤维素或其钠盐、硼酸酯偶联剂、磷酸三丁酯、乙二醇对粉煤灰进行改性，在高速剪切乳化机中将改性粉煤灰、不饱和酯、引发剂、链转移剂及其他单体合成提浆剂，通过机械力化学法克服了溶解度对反应的局限，为粉煤灰的高值化利用提供了新的方向。合成的超高性能混凝土用提浆剂，在低水胶比时可实现分散水泥、保水增稠、提浆丝滑、悬浮均质、拉丝自流平等效果，可提高混凝土的和易性和包裹性。向添加有低质组分的混凝土中加入本提浆剂，可降低混凝土收缩率，减少混凝土开裂的风险，提高混凝土强度及耐久性。
Slurry purifying agent for ultra-high performance concrete and preparation method of slurry purifying agent
The invention provides a slurry purifying agent for ultra-high performance concrete and a preparation method of the slurry purifying agent. The preparation method comprises the following steps: modifying fly ash by using cellulose or sodium salt thereof, a boric acid ester coupling agent, tributyl phosphate and ethylene glycol in a ball mill; the modified fly ash, unsaturated ester, an initiator, a chain transfer agent and other monomers are synthesized into the slurry extracting agent in a high-speed shearing emulsifying machine, the limitation of solubility on the reaction is overcome through a mechanochemical method, and a new direction is provided for high-value utilization of the fly ash. The synthesized ultra-high performance concrete slurry extracting agent can achieve the effects of cement dispersion, water retention and thickening, smooth slurry extraction, suspension homogenization, wiredrawing self-leveling and the like at a low water-binder ratio, and can improve the workability and wrapping property of concrete. When the grouting agent is added into concrete added with low-quality components, the shrinkage rate of the concrete can be reduced, the risk of cracking of the concrete is reduced, and the strength and durability of the concrete are improved.
本发明提供了一种超高性能混凝土用提浆剂及其制备方法，本发明在球磨机中使用纤维素或其钠盐、硼酸酯偶联剂、磷酸三丁酯、乙二醇对粉煤灰进行改性，在高速剪切乳化机中将改性粉煤灰、不饱和酯、引发剂、链转移剂及其他单体合成提浆剂，通过机械力化学法克服了溶解度对反应的局限，为粉煤灰的高值化利用提供了新的方向。合成的超高性能混凝土用提浆剂，在低水胶比时可实现分散水泥、保水增稠、提浆丝滑、悬浮均质、拉丝自流平等效果，可提高混凝土的和易性和包裹性。向添加有低质组分的混凝土中加入本提浆剂，可降低混凝土收缩率，减少混凝土开裂的风险，提高混凝土强度及耐久性。
Slurry purifying agent for ultra-high performance concrete and preparation method of slurry purifying agent
一种超高性能混凝土用提浆剂及其制备方法
2024-08-16
Patent
Electronic Resource
Chinese
IPC:
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C04B
Kalk
,
LIME
/
C08K
Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe
,
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
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