Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Impermeable recycled concrete and preparation method thereof
The invention discloses impermeable recycled concrete and a preparation method thereof. The impermeable recycled concrete is prepared from the following raw materials: Portland cement, fine aggregate, coarse aggregate, 110-144 parts of water, a water reducing agent, an air entraining agent and dihydroxyl-terminated polysiloxane modified hydrotalcite, the content of the recycled fine aggregate in the fine aggregate and the content of the recycled coarse aggregate in the coarse aggregate are both 20-80 wt%. According to the invention, gaps of the recycled aggregate are filled with the dihydroxyl-terminated polysiloxane modified hydrotalcite, and the modified hydrotalcite can improve the compatibility among the natural aggregate, the recycled aggregate and the cement, so that the interior of the recycled concrete is compact; the modified hydrotalcite has good adsorption and fixation performance on ions such as chloride ions and sulfate ions, and the anti-permeability performance of the recycled concrete is remarkably improved.
本发明公开了一种抗渗再生混凝土及其制备方法。一种抗渗再生混凝土，由包括如下原料制得：硅酸盐水泥、细骨料、粗骨料、水110～144份、减水剂、引气剂、双羟基封端聚硅氧烷改性水滑石；所述再生细骨料在细骨料中的含量以及再生粗骨料在粗骨料中的含量均为20wt%～80wt%。本申请中使用双羟基封端聚硅氧烷改性水滑石对再生骨料的缝隙进行填充，同时改性水滑石能够对天然骨料、再生骨料和水泥三者之间的相容性进行改善，使得再生混凝土内部致密，改性水滑石对氯离子、硫酸根离子等离子的吸附固定性能较好，显著提高了再生混凝土的抗渗性能。
Impermeable recycled concrete and preparation method thereof
The invention discloses impermeable recycled concrete and a preparation method thereof. The impermeable recycled concrete is prepared from the following raw materials: Portland cement, fine aggregate, coarse aggregate, 110-144 parts of water, a water reducing agent, an air entraining agent and dihydroxyl-terminated polysiloxane modified hydrotalcite, the content of the recycled fine aggregate in the fine aggregate and the content of the recycled coarse aggregate in the coarse aggregate are both 20-80 wt%. According to the invention, gaps of the recycled aggregate are filled with the dihydroxyl-terminated polysiloxane modified hydrotalcite, and the modified hydrotalcite can improve the compatibility among the natural aggregate, the recycled aggregate and the cement, so that the interior of the recycled concrete is compact; the modified hydrotalcite has good adsorption and fixation performance on ions such as chloride ions and sulfate ions, and the anti-permeability performance of the recycled concrete is remarkably improved.
本发明公开了一种抗渗再生混凝土及其制备方法。一种抗渗再生混凝土，由包括如下原料制得：硅酸盐水泥、细骨料、粗骨料、水110～144份、减水剂、引气剂、双羟基封端聚硅氧烷改性水滑石；所述再生细骨料在细骨料中的含量以及再生粗骨料在粗骨料中的含量均为20wt%～80wt%。本申请中使用双羟基封端聚硅氧烷改性水滑石对再生骨料的缝隙进行填充，同时改性水滑石能够对天然骨料、再生骨料和水泥三者之间的相容性进行改善，使得再生混凝土内部致密，改性水滑石对氯离子、硫酸根离子等离子的吸附固定性能较好，显著提高了再生混凝土的抗渗性能。
Impermeable recycled concrete and preparation method thereof
抗渗再生混凝土及其制备方法
ZHANG BIYE (Autor:in) / DAI JIANHAI (Autor:in)
05.11.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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