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A platform for research: civil engineering, architecture and urbanism
Composite expanding agent for cement-based material and preparation method of composite expanding agent
The invention relates to a composite expanding agent for a cement-based material and a preparation method thereof, and the composite expanding agent comprises the following raw materials by mass: 1%-20% of a plastic expanding agent, 5%-40% of a calcium oxide liquid expanding agent, 10%-50% of a magnesium oxide expanding agent, 10%-50% of diatomite, 5%-30% of bentonite, 2%-10% of calcined gypsum, 1%-8% of an antifoaming agent, and 1%-10% of a dispersant. The composite expanding agent provided by the invention can fully excite the expansion potential of a multi-element expansion source in different action window periods to form early-stage-middle-stage-later-stage gradient expansion efficacy, so that the prepared low-water-binder-ratio cement-based material realizes low shrinkage and expansion on the basis of ensuring good mechanical properties and durability.
本申请涉及一种水泥基材料用复合膨胀剂及其制备方法，按质量百分比计，包括以下原料：塑性膨胀剂1％～20％、氧化钙液体膨胀剂5％～40％、氧化镁膨胀剂10％～50％、硅藻土10％～50％、膨润土5％～30％、熟石膏2％～10％、消泡剂1％～8％、分散剂1％～10％。本申请提供的复合膨胀剂能充分激发多元膨胀源在不同作用窗口期的膨胀潜能，形成早期‑中期‑后期的梯度膨胀效力，使制备的低水胶比水泥基材料在保证良好力学性能和耐久性能的基础上，实现其低收缩化和膨胀化。
Composite expanding agent for cement-based material and preparation method of composite expanding agent
The invention relates to a composite expanding agent for a cement-based material and a preparation method thereof, and the composite expanding agent comprises the following raw materials by mass: 1%-20% of a plastic expanding agent, 5%-40% of a calcium oxide liquid expanding agent, 10%-50% of a magnesium oxide expanding agent, 10%-50% of diatomite, 5%-30% of bentonite, 2%-10% of calcined gypsum, 1%-8% of an antifoaming agent, and 1%-10% of a dispersant. The composite expanding agent provided by the invention can fully excite the expansion potential of a multi-element expansion source in different action window periods to form early-stage-middle-stage-later-stage gradient expansion efficacy, so that the prepared low-water-binder-ratio cement-based material realizes low shrinkage and expansion on the basis of ensuring good mechanical properties and durability.
本申请涉及一种水泥基材料用复合膨胀剂及其制备方法，按质量百分比计，包括以下原料：塑性膨胀剂1％～20％、氧化钙液体膨胀剂5％～40％、氧化镁膨胀剂10％～50％、硅藻土10％～50％、膨润土5％～30％、熟石膏2％～10％、消泡剂1％～8％、分散剂1％～10％。本申请提供的复合膨胀剂能充分激发多元膨胀源在不同作用窗口期的膨胀潜能，形成早期‑中期‑后期的梯度膨胀效力，使制备的低水胶比水泥基材料在保证良好力学性能和耐久性能的基础上，实现其低收缩化和膨胀化。
Composite expanding agent for cement-based material and preparation method of composite expanding agent
一种水泥基材料用复合膨胀剂及其制备方法
LIU KAIZHI (author) / ZHONG JIWEI (author) / SHI GANG (author) / PENG XUMIN (author) / GAO LIQIANG (author) / LONG YONG (author) / CHEN LUYI (author) / GE KEYU (author) / YAN YIBIN (author) / WANG KANGNING (author)
2023-04-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Cement base material expanding agent and preparation method thereof
| European Patent Office | 2015
| European Patent Office | 2016
Magnesium oxide composite expanding agent and preparation method thereof
| European Patent Office | 2020
| European Patent Office | 2020