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Lithium slag modified ultra-high performance concrete product and preparation method thereof
The invention discloses a lithium slag modified ultra-high performance concrete product and a preparation method thereof, wherein the lithium slag modified ultra-high performance concrete product is aflat plate or hyperboloid member with a thickness of 15-50 mm, and comprises the components: cement, sand, active powder, lithium slag, fibers, redispersible latex powder, a water reducing agent, anantifoaming agent and water. The lithium slag is pretreated by adopting the dispersible latex powder, and the hydrophobicity of organic groups is utilized, so the water absorption of the lithium slagin the concrete stirring process is reduced; then, the dispersible latex powder is dispersed when meeting water, moisture enters the pores of the lithium slag, so a free water reserve is formed, the water retention effect is achieved, and evaporation of water is reduced; the water retention effect can also be achieved through redispersion and film formation of the redispersible latex powder, early-stage dehydration shrinkage and deformation of an ultra-high performance concrete product are reduced, and meanwhile the synergistic effect of the lithium slag and other active components on the mechanical property of the ultra-high performance concrete is achieved.
本发明公开了一种锂渣改性超高性能混凝土制品及其制备方法，所述锂渣改性超高性能混凝土制品为15‑50mm厚的平板或双曲面构件，其成分包括水泥、沙、活性粉料、锂渣、纤维、可再分散性乳胶粉、减水剂、消泡剂和水。本发明采用可分散性乳胶粉对锂渣进行预处理，利用有机基团的疏水性，降低锂渣在混凝土搅拌过程中的吸水性，随后可分散性乳胶粉遇水再分散，水分进入锂渣多孔中，形成自由水的储备，具有保水作用减少水分的蒸发，可再分散性乳胶粉再分散与成膜也可以起到保水作用，降低超高性能混凝土产品早期失水收缩、变形，同时发挥了锂渣与其它活性组分对超高性能混凝土力学性能的协同效应。
Lithium slag modified ultra-high performance concrete product and preparation method thereof
The invention discloses a lithium slag modified ultra-high performance concrete product and a preparation method thereof, wherein the lithium slag modified ultra-high performance concrete product is aflat plate or hyperboloid member with a thickness of 15-50 mm, and comprises the components: cement, sand, active powder, lithium slag, fibers, redispersible latex powder, a water reducing agent, anantifoaming agent and water. The lithium slag is pretreated by adopting the dispersible latex powder, and the hydrophobicity of organic groups is utilized, so the water absorption of the lithium slagin the concrete stirring process is reduced; then, the dispersible latex powder is dispersed when meeting water, moisture enters the pores of the lithium slag, so a free water reserve is formed, the water retention effect is achieved, and evaporation of water is reduced; the water retention effect can also be achieved through redispersion and film formation of the redispersible latex powder, early-stage dehydration shrinkage and deformation of an ultra-high performance concrete product are reduced, and meanwhile the synergistic effect of the lithium slag and other active components on the mechanical property of the ultra-high performance concrete is achieved.
本发明公开了一种锂渣改性超高性能混凝土制品及其制备方法，所述锂渣改性超高性能混凝土制品为15‑50mm厚的平板或双曲面构件，其成分包括水泥、沙、活性粉料、锂渣、纤维、可再分散性乳胶粉、减水剂、消泡剂和水。本发明采用可分散性乳胶粉对锂渣进行预处理，利用有机基团的疏水性，降低锂渣在混凝土搅拌过程中的吸水性，随后可分散性乳胶粉遇水再分散，水分进入锂渣多孔中，形成自由水的储备，具有保水作用减少水分的蒸发，可再分散性乳胶粉再分散与成膜也可以起到保水作用，降低超高性能混凝土产品早期失水收缩、变形，同时发挥了锂渣与其它活性组分对超高性能混凝土力学性能的协同效应。
Lithium slag modified ultra-high performance concrete product and preparation method thereof
一种锂渣改性超高性能混凝土制品及其制备方法
LIU XIAOBIN (author)
2020-10-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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