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Early-strength high-impermeability sprayed concrete and preparation method thereof
The invention provides early-strength and high-impermeability sprayed concrete and a preparation method thereof, and belongs to the technical field of sprayed concrete.The early-strength and high-impermeability sprayed concrete is composed of a high-strength cementing material, fine aggregate, coarse aggregate, an impermeability component, an early strength agent, a polycarboxylic acid superplasticizer, a liquid alkali-free accelerator, modified whiskers and water. The impervious component is composed of emulsion polymer powder, a polyhydric alcohol organic matter and a special alcohol alkoxy compound. The anti-seepage performance of the sprayed concrete can be remarkably improved from the aspects of compacting a concrete structure system, using the anti-seepage components and adding the anti-cracking whiskers, and the early strength of the sprayed concrete is enhanced by adding the early-strength components. The supporting strength of early-stage sprayed concrete can be provided, and the anti-permeability performance of the sprayed concrete can be improved, so that the durability of a single-layer lining structure is improved, and the service life of the single-layer lining structure is prolonged.
本发明提供了一种早高强高抗渗喷射混凝土及其制备方法，属于喷射混凝土技术领域，所述早高强高抗渗喷射混凝土由高强胶凝材料、细骨料、粗骨料、抗渗组分、早强剂、聚羧酸高效减水剂、液体无碱速凝剂、改性晶须和水组成。所述抗渗组分由乳液聚合物粉末、多元醇有机物和特种醇烷氧基化合物组成。本发明从密实混凝土结构体系、抗渗组分使用及抗裂晶须的添加使喷射混凝土的抗渗性能可以得到显著改善，早强组分的添加增强喷射混凝土的早期强度。不仅可以提供早期喷射混凝土的支护强度，还能提高喷射混凝土的抗渗性能，从而提高单层衬砌结构的耐久性，延长使用寿命。
Early-strength high-impermeability sprayed concrete and preparation method thereof
The invention provides early-strength and high-impermeability sprayed concrete and a preparation method thereof, and belongs to the technical field of sprayed concrete.The early-strength and high-impermeability sprayed concrete is composed of a high-strength cementing material, fine aggregate, coarse aggregate, an impermeability component, an early strength agent, a polycarboxylic acid superplasticizer, a liquid alkali-free accelerator, modified whiskers and water. The impervious component is composed of emulsion polymer powder, a polyhydric alcohol organic matter and a special alcohol alkoxy compound. The anti-seepage performance of the sprayed concrete can be remarkably improved from the aspects of compacting a concrete structure system, using the anti-seepage components and adding the anti-cracking whiskers, and the early strength of the sprayed concrete is enhanced by adding the early-strength components. The supporting strength of early-stage sprayed concrete can be provided, and the anti-permeability performance of the sprayed concrete can be improved, so that the durability of a single-layer lining structure is improved, and the service life of the single-layer lining structure is prolonged.
本发明提供了一种早高强高抗渗喷射混凝土及其制备方法，属于喷射混凝土技术领域，所述早高强高抗渗喷射混凝土由高强胶凝材料、细骨料、粗骨料、抗渗组分、早强剂、聚羧酸高效减水剂、液体无碱速凝剂、改性晶须和水组成。所述抗渗组分由乳液聚合物粉末、多元醇有机物和特种醇烷氧基化合物组成。本发明从密实混凝土结构体系、抗渗组分使用及抗裂晶须的添加使喷射混凝土的抗渗性能可以得到显著改善，早强组分的添加增强喷射混凝土的早期强度。不仅可以提供早期喷射混凝土的支护强度，还能提高喷射混凝土的抗渗性能，从而提高单层衬砌结构的耐久性，延长使用寿命。
Early-strength high-impermeability sprayed concrete and preparation method thereof
一种早高强高抗渗喷射混凝土及其制备方法
WANG WEI (author) / LIU JIAPING (author) / WANG YUJIANG (author) / LI HUA (author) / ZHU JIANG (author)
2024-09-06
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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