A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Alkali-free fluoride-free liquid accelerator as well as preparation method and application thereof
The invention provides an alkali-free fluorine-free liquid accelerator as well as a preparation method and application thereof, and relates to the technical field of building material admixtures. The alkali-free fluorine-free liquid accelerator comprises the following components in percentage by mass: 52-60% of aluminum sulfate; 1-8% of aluminum hydroxide; 0.3-4% of hydroxy carboxylic acid; 4-12% of alcohol amine; 1-5% of a stabilizer; 0.3-1% of a suspending agent; the total percentage of the components is 100%. The stability of the alkali-free fluoride-free liquid accelerator at 20-25 DEG C is more than 120 days, and the stability of the alkali-free fluoride-free liquid accelerator at-5 DEG C is more than 30 days, when the alkali-free fluoride-free liquid accelerator is used in cement paste or cement mortar and the mixing amount is 6-8%, the alkali-free fluoride-free liquid accelerator can meet the technical requirements of Q/CR 807-2020 Liquid Alkali-free Accelerator for Tunnel Spraying Concrete, the setting time is qualified, the compressive strength in 6h is more than 1MPa, the compressive strength in 1d is more than 10MPa, and the compressive strength ratio in 28d is more than or equal to 90%. And the 90d compressive strength retention rate is greater than 105%.
本发明提供一种无碱无氟液体速凝剂及其制备方法和应用，涉及建筑材料外加剂技术领域。无碱无氟液体速凝剂，包括如下质量百分比的组份：硫酸铝，52‑60％；氢氧化铝，1‑8％；羟基羧酸，0.3‑4％；醇胺4‑12％；稳定剂，1‑5％；悬浮剂，0.3‑1％；余量为水，补足至100％。无碱无氟液体速凝剂在20‑25℃条件下稳定性＞120天，在‑5℃条件下稳定性＞30天，用于水泥净浆或水泥砂浆中，掺量为6‑8％时可以满足Q/CR 807‑2020《隧道喷射混凝土用液体无碱速凝剂》的技术要求，凝结时间合格，6h抗压强度＞1MPa，1d抗压强度＞10MPa，28d抗压强度比≥90％，90d抗压强度保留率＞105％。
Alkali-free fluoride-free liquid accelerator as well as preparation method and application thereof
The invention provides an alkali-free fluorine-free liquid accelerator as well as a preparation method and application thereof, and relates to the technical field of building material admixtures. The alkali-free fluorine-free liquid accelerator comprises the following components in percentage by mass: 52-60% of aluminum sulfate; 1-8% of aluminum hydroxide; 0.3-4% of hydroxy carboxylic acid; 4-12% of alcohol amine; 1-5% of a stabilizer; 0.3-1% of a suspending agent; the total percentage of the components is 100%. The stability of the alkali-free fluoride-free liquid accelerator at 20-25 DEG C is more than 120 days, and the stability of the alkali-free fluoride-free liquid accelerator at-5 DEG C is more than 30 days, when the alkali-free fluoride-free liquid accelerator is used in cement paste or cement mortar and the mixing amount is 6-8%, the alkali-free fluoride-free liquid accelerator can meet the technical requirements of Q/CR 807-2020 Liquid Alkali-free Accelerator for Tunnel Spraying Concrete, the setting time is qualified, the compressive strength in 6h is more than 1MPa, the compressive strength in 1d is more than 10MPa, and the compressive strength ratio in 28d is more than or equal to 90%. And the 90d compressive strength retention rate is greater than 105%.
本发明提供一种无碱无氟液体速凝剂及其制备方法和应用，涉及建筑材料外加剂技术领域。无碱无氟液体速凝剂，包括如下质量百分比的组份：硫酸铝，52‑60％；氢氧化铝，1‑8％；羟基羧酸，0.3‑4％；醇胺4‑12％；稳定剂，1‑5％；悬浮剂，0.3‑1％；余量为水，补足至100％。无碱无氟液体速凝剂在20‑25℃条件下稳定性＞120天，在‑5℃条件下稳定性＞30天，用于水泥净浆或水泥砂浆中，掺量为6‑8％时可以满足Q/CR 807‑2020《隧道喷射混凝土用液体无碱速凝剂》的技术要求，凝结时间合格，6h抗压强度＞1MPa，1d抗压强度＞10MPa，28d抗压强度比≥90％，90d抗压强度保留率＞105％。
Alkali-free fluoride-free liquid accelerator as well as preparation method and application thereof
一种无碱无氟液体速凝剂及其制备方法和应用
FAN DONGDONG (author) / LIN CHUNHONG (author) / LEE SEO-IL (author) / QU XINMING (author) / CHEN JIN (author) / WANG ZHIYONG (author) / HUANG HAI (author) / ZHU ZONGJIAN (author) / YUAN QIANG (author)
2024-02-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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