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Crystal nucleus material early strength agent for cement concrete and preparation method of crystal nucleus material early strength agent
The invention discloses a crystal nucleus material early strength agent for cement concrete and a preparation method of the crystal nucleus material early strength agent. The early strength agent comprises the following components in percentage by mass: 38-63% of a pre-dispersion modified composite additive, 1-5% of a water reducer and the balance of a water reducer, 15-31% of sodium sulfate; 1.3 to 5.4 percent of sodium metaaluminate; 0.2 to 1.5 percent of hydrated magnesium silicate; 3.5-12% of a calcium salt; wherein the pre-dispersed modified composite additive is prepared by mixing modified silicon-calcium composite particles and fly ash, and the mass ratio of the modified silicon-calcium composite particles to the fly ash is (1: 3)-(1: 1). The crystal nucleus material early strength agent for cement concrete provided by the invention can overcome the defects of difficult dispersion, easy slump loss and the like when the traditional nano SiO2 is used as the crystal nucleus early strength agent, can fully and uniformly mix the nano SiO2 with a concrete system, can effectively shorten the initial setting time and the final setting time of concrete, shortens the demolding time, improves the production efficiency, and reduces the production cost. The strength of a concrete system can be improved.
本发明公开了一种水泥混凝土用晶核材料早强剂及其制备方法，该早强剂包括按质量分数比计的以下组分：预分散改性复合助剂38‑63％；硫酸钠15‑31％；偏铝酸钠1.3‑5.4％；水合硅酸镁0.2‑1.5％；钙盐3.5‑12％；其中，所述预分散改性复合助剂是通过将改性硅钙复合粒子与粉煤灰混合制备得到，改性硅钙复合粒子：粉煤灰的质量比为1:3～1:1。本发明提供的水泥混凝土用晶核材料早强剂能够克服传统纳米SiO2作为晶核早强剂应用时存在的难分散、易损失坍落度等缺陷，能够使纳米SiO2与混凝土体系充分混匀，可以有效缩短混凝土初凝时间和终凝时间，缩短脱模时间，提高生产效率，并可提高混凝土体系强度。
Crystal nucleus material early strength agent for cement concrete and preparation method of crystal nucleus material early strength agent
The invention discloses a crystal nucleus material early strength agent for cement concrete and a preparation method of the crystal nucleus material early strength agent. The early strength agent comprises the following components in percentage by mass: 38-63% of a pre-dispersion modified composite additive, 1-5% of a water reducer and the balance of a water reducer, 15-31% of sodium sulfate; 1.3 to 5.4 percent of sodium metaaluminate; 0.2 to 1.5 percent of hydrated magnesium silicate; 3.5-12% of a calcium salt; wherein the pre-dispersed modified composite additive is prepared by mixing modified silicon-calcium composite particles and fly ash, and the mass ratio of the modified silicon-calcium composite particles to the fly ash is (1: 3)-(1: 1). The crystal nucleus material early strength agent for cement concrete provided by the invention can overcome the defects of difficult dispersion, easy slump loss and the like when the traditional nano SiO2 is used as the crystal nucleus early strength agent, can fully and uniformly mix the nano SiO2 with a concrete system, can effectively shorten the initial setting time and the final setting time of concrete, shortens the demolding time, improves the production efficiency, and reduces the production cost. The strength of a concrete system can be improved.
本发明公开了一种水泥混凝土用晶核材料早强剂及其制备方法，该早强剂包括按质量分数比计的以下组分：预分散改性复合助剂38‑63％；硫酸钠15‑31％；偏铝酸钠1.3‑5.4％；水合硅酸镁0.2‑1.5％；钙盐3.5‑12％；其中，所述预分散改性复合助剂是通过将改性硅钙复合粒子与粉煤灰混合制备得到，改性硅钙复合粒子：粉煤灰的质量比为1:3～1:1。本发明提供的水泥混凝土用晶核材料早强剂能够克服传统纳米SiO2作为晶核早强剂应用时存在的难分散、易损失坍落度等缺陷，能够使纳米SiO2与混凝土体系充分混匀，可以有效缩短混凝土初凝时间和终凝时间，缩短脱模时间，提高生产效率，并可提高混凝土体系强度。
Crystal nucleus material early strength agent for cement concrete and preparation method of crystal nucleus material early strength agent
水泥混凝土用晶核材料早强剂及其制备方法
LI CHANGLIN (author) / WANG XING (author) / LU XIAOLEI (author)
2024-09-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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