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A platform for research: civil engineering, architecture and urbanism
Lithium carbonate-halloysite nanotube as well as preparation method and application thereof
The invention discloses a lithium carbonate-halloysite nanotube as well as a preparation method and application thereof. The preparation method comprises the following steps: taking a halloysite nanotube and lithium carbonate as raw materials, and preparing the lithium carbonate-halloysite nanotube by adopting a vacuum impregnation method. The lithium carbonate-halloysite nanotube is added into concrete, Li<+> in the lithium carbonate-halloysite nanotube can be gradually separated out along with cement hydration reaction, and the Li<+> can replace K<+> and Na<+> in slurry to react with silicate substances to generate non-expansive lithium silicic acid gel, so that expansion of a sample is effectively hindered, and the effect of inhibiting the alkali-aggregate reaction of the sample is achieved; CO3<2-> in the lithium carbonate-halloysite nanotube plays a role in curing Ca<2+>, and calcium carbonate is formed in the halloysite nanotube, so that the content of Ca<2+> is reduced, and the damage of carbonate reaction to a matrix is reduced; and the halloysite nanotube can also be used as a reinforcing material to improve the crack resistance and mechanical properties of the concrete.
本发明公开一种碳酸锂‑埃洛石纳米管及其制备方法与应用。该制备方法包括：以埃洛石纳米管和碳酸锂为原料，采用真空浸渍法，制备得到所述碳酸锂‑埃洛石纳米管。本发明将碳酸锂‑埃洛石纳米管加入到混凝土中，随着水泥水化反应的进行，碳酸锂‑埃洛石纳米管中的Li+会逐渐析出，Li+可取代浆体中的K+、Na+与硅酸盐物质发生反应，生成非膨胀性的锂硅酸凝胶，有效阻碍试样的膨胀，起到抑制试样碱骨料反应的作用；碳酸锂‑埃洛石纳米管中的CO32‑将起到固化Ca2+的作用，在埃洛石纳米管中形成碳酸钙，使得Ca2+的含量降低，减少碳酸盐反应对基体的破坏；埃洛石纳米管还可以作为增强材料，提升混凝土的抗裂性能和力学性能。
Lithium carbonate-halloysite nanotube as well as preparation method and application thereof
The invention discloses a lithium carbonate-halloysite nanotube as well as a preparation method and application thereof. The preparation method comprises the following steps: taking a halloysite nanotube and lithium carbonate as raw materials, and preparing the lithium carbonate-halloysite nanotube by adopting a vacuum impregnation method. The lithium carbonate-halloysite nanotube is added into concrete, Li<+> in the lithium carbonate-halloysite nanotube can be gradually separated out along with cement hydration reaction, and the Li<+> can replace K<+> and Na<+> in slurry to react with silicate substances to generate non-expansive lithium silicic acid gel, so that expansion of a sample is effectively hindered, and the effect of inhibiting the alkali-aggregate reaction of the sample is achieved; CO3<2-> in the lithium carbonate-halloysite nanotube plays a role in curing Ca<2+>, and calcium carbonate is formed in the halloysite nanotube, so that the content of Ca<2+> is reduced, and the damage of carbonate reaction to a matrix is reduced; and the halloysite nanotube can also be used as a reinforcing material to improve the crack resistance and mechanical properties of the concrete.
本发明公开一种碳酸锂‑埃洛石纳米管及其制备方法与应用。该制备方法包括：以埃洛石纳米管和碳酸锂为原料，采用真空浸渍法，制备得到所述碳酸锂‑埃洛石纳米管。本发明将碳酸锂‑埃洛石纳米管加入到混凝土中，随着水泥水化反应的进行，碳酸锂‑埃洛石纳米管中的Li+会逐渐析出，Li+可取代浆体中的K+、Na+与硅酸盐物质发生反应，生成非膨胀性的锂硅酸凝胶，有效阻碍试样的膨胀，起到抑制试样碱骨料反应的作用；碳酸锂‑埃洛石纳米管中的CO32‑将起到固化Ca2+的作用，在埃洛石纳米管中形成碳酸钙，使得Ca2+的含量降低，减少碳酸盐反应对基体的破坏；埃洛石纳米管还可以作为增强材料，提升混凝土的抗裂性能和力学性能。
Lithium carbonate-halloysite nanotube as well as preparation method and application thereof
一种碳酸锂-埃洛石纳米管及其制备方法与应用
WANG JUNFENG (author) / FANG YUAN (author) / YIN XIAOHONG (author) / HE KEZE (author) / LIN CHEN (author) / LU LIULEI (author)
2021-09-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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