Railway tunnel lining concrete anti-cracking functional material and concrete and application thereof

• Main Authors: TAN YANBIN, ZHONG XINHUA, QU YANAN, WANG JIAXUAN, CHEN YAN, FENG ZHONGWEI, LI HUAJIAN, SU WANYU, XIE YONGJIANG, LI LIANJI, WANG JIAHE, KONG QINGXIN
• Format: Patent
• Language: Chinese; English
• Published: 23.09.2022
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention discloses an anti-cracking functional material for railway tunnel lining concrete. The anti-cracking functional material comprises a self-curing material and a tying material, wherein the self-curing material is a lightweight porous material, and the tie material is a steel-organic fiber composite material. According to the technical scheme, the functional material for shrinkage cracking and chipping of the lining concrete of the high-speed railway tunnel and application of the functional material cover functional material composition, mix proportion key parameters and construction key process control, and the material can effectively reduce the risk of shrinkage cracking and chipping of the lining concrete of the tunnel under the aerodynamic effect of a high-speed train; safe and stable operation of the high-speed train is ensured. 本发明公开了一种铁路隧道衬砌混凝土防裂功能材料，包括自养护材料和拉结材料；其中，所述自养护材料为轻质多孔材料，所述拉结材料为钢-有机纤维复合材料。本发明技术方案涵盖功能材料组成、配合比关键参数和施工关键工艺控制的高速铁路隧道衬砌混凝土收缩开裂与掉块的功能材料及应用，该材料可有效降低高速列车空气动力效应下隧道衬砌混凝土收缩开裂和掉