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Nano aluminum hydroxide accelerator as well as preparation method and application thereof
The invention provides a nano aluminum hydroxide accelerator as well as a preparation method and application thereof, and the nano aluminum hydroxide accelerator is mainly prepared from the followingcomponents in parts by weight through a wet grinding process: 210-250 parts of aluminum hydroxide powder, 300-400 parts of water, 280-320 parts of a dispersing agent and 130-150 parts of an anti-settling stabilizer. The nano-form aluminum hydroxide in the nano aluminum hydroxide accelerator has both a rapid hardening effect and a crystal nucleus effect, hydration hardening of aluminate minerals incement clinker can be remarkably accelerated, when the nano aluminum hydroxide accelerator is doped into a cement-based material according to the doping amount of 5-8%, the initial setting time of cement paste can be shortened to 4 min or below, and the final setting time can be shortened to 10 min or below; the 1d compressive strength of the sprayed concrete is remarkably improved, no adverse effect is caused to the later strength, and various properties of the concrete meet the requirements of the standard GB/T35159-2017 on the alkali-free Accelerating Agent.
本发明提供一种纳米氢氧化铝速凝剂及其制备方法和应用，该纳米氢氧化铝速凝剂，按重量份计，主要由以下组分经过湿磨工艺制得：氢氧化铝粉体：210‑250份，水：300‑400份，分散剂：280‑320份，阻沉稳定剂：130‑150份。本发明的纳米氢氧化铝速凝剂中的纳米形态的氢氧化铝兼具速凝效应及晶核效应，能显著加速水泥熟料中铝酸盐矿物的水化硬化，将其以5‑8％的掺量掺入水泥基材料时，可将水泥净浆的初凝时间缩短至4min以下、终凝时间至10min以下，显著提高喷射混凝土的1d抗压强度，且对后期强度无不利影响，其各项性能均已达到标准GB/T35159‑2017《喷射混凝土用速凝剂》对无碱速凝剂的要求。
Nano aluminum hydroxide accelerator as well as preparation method and application thereof
The invention provides a nano aluminum hydroxide accelerator as well as a preparation method and application thereof, and the nano aluminum hydroxide accelerator is mainly prepared from the followingcomponents in parts by weight through a wet grinding process: 210-250 parts of aluminum hydroxide powder, 300-400 parts of water, 280-320 parts of a dispersing agent and 130-150 parts of an anti-settling stabilizer. The nano-form aluminum hydroxide in the nano aluminum hydroxide accelerator has both a rapid hardening effect and a crystal nucleus effect, hydration hardening of aluminate minerals incement clinker can be remarkably accelerated, when the nano aluminum hydroxide accelerator is doped into a cement-based material according to the doping amount of 5-8%, the initial setting time of cement paste can be shortened to 4 min or below, and the final setting time can be shortened to 10 min or below; the 1d compressive strength of the sprayed concrete is remarkably improved, no adverse effect is caused to the later strength, and various properties of the concrete meet the requirements of the standard GB/T35159-2017 on the alkali-free Accelerating Agent.
本发明提供一种纳米氢氧化铝速凝剂及其制备方法和应用，该纳米氢氧化铝速凝剂，按重量份计，主要由以下组分经过湿磨工艺制得：氢氧化铝粉体：210‑250份，水：300‑400份，分散剂：280‑320份，阻沉稳定剂：130‑150份。本发明的纳米氢氧化铝速凝剂中的纳米形态的氢氧化铝兼具速凝效应及晶核效应，能显著加速水泥熟料中铝酸盐矿物的水化硬化，将其以5‑8％的掺量掺入水泥基材料时，可将水泥净浆的初凝时间缩短至4min以下、终凝时间至10min以下，显著提高喷射混凝土的1d抗压强度，且对后期强度无不利影响，其各项性能均已达到标准GB/T35159‑2017《喷射混凝土用速凝剂》对无碱速凝剂的要求。
Nano aluminum hydroxide accelerator as well as preparation method and application thereof
一种纳米氢氧化铝速凝剂及其制备方法和应用
TAN HONGBO (author) / DENG XIUFENG (author) / HE XINGYANG (author) / JIAN SHOUWEI (author) / SU YING (author) / ZHENG ZHENGQI (author)
2021-03-16
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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