Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Acid rain erosion resistant concrete admixture and preparation method thereof
The invention belongs to the technical field of building materials, and particularly relates to an acid rain erosion resistant concrete admixture and a preparation method thereof. According to the method, waste material slag ore generated in the tunnel excavation process is selected as a raw material, the proportion of quartz to feldspar is regulated and controlled through neutral flotation liquid, dimethylacetamide reacts with feldspar microcrystals attached to the surface of quartz on the surface of slag stone powder in an alkaline environment, and then an organic cladding is formed on the surface of the slag stone powder; the organic cladding can block pores of the slag stone powder and generate an acid chemical erosion medium protection effect, so that the slag stone powder has higher impermeability and chemical corrosion resistance. Meanwhile, the borax is also added, and the borax prevents agglomeration of impurities such as ettringite and the like around a concrete skeleton under a microscopic condition, so that the flowability of the concrete is effectively improved, and the reduction of mechanical properties of a concrete structure is effectively prevented.
本发明属于建筑材料技术领域，具体涉及一种抗酸雨侵蚀的混凝土掺和料及其制备方法。在本发明中选用隧道挖掘过程产生的废弃物料渣矿为原料，通过中性浮选液调控石英和长石的比例，利用二甲基乙酰胺在碱性环境中，与渣石粉表面附着在石英表面的长石微晶进行反应，进而在渣石粉表面形成有机包层，该有机包层能够对渣石粉的孔隙进行封堵并且产生酸性化学侵蚀介质防护效果，使得渣石粉具有更高的抗渗性和抗化学腐蚀能力。同时，本发明中还加入了硼砂，硼砂在微观条件下阻碍混凝土骨架周围如钙矾石等杂质的团聚，有效提高混凝土的流动性，有效的防止了混凝土结构的力学性能的降低。
Acid rain erosion resistant concrete admixture and preparation method thereof
The invention belongs to the technical field of building materials, and particularly relates to an acid rain erosion resistant concrete admixture and a preparation method thereof. According to the method, waste material slag ore generated in the tunnel excavation process is selected as a raw material, the proportion of quartz to feldspar is regulated and controlled through neutral flotation liquid, dimethylacetamide reacts with feldspar microcrystals attached to the surface of quartz on the surface of slag stone powder in an alkaline environment, and then an organic cladding is formed on the surface of the slag stone powder; the organic cladding can block pores of the slag stone powder and generate an acid chemical erosion medium protection effect, so that the slag stone powder has higher impermeability and chemical corrosion resistance. Meanwhile, the borax is also added, and the borax prevents agglomeration of impurities such as ettringite and the like around a concrete skeleton under a microscopic condition, so that the flowability of the concrete is effectively improved, and the reduction of mechanical properties of a concrete structure is effectively prevented.
本发明属于建筑材料技术领域，具体涉及一种抗酸雨侵蚀的混凝土掺和料及其制备方法。在本发明中选用隧道挖掘过程产生的废弃物料渣矿为原料，通过中性浮选液调控石英和长石的比例，利用二甲基乙酰胺在碱性环境中，与渣石粉表面附着在石英表面的长石微晶进行反应，进而在渣石粉表面形成有机包层，该有机包层能够对渣石粉的孔隙进行封堵并且产生酸性化学侵蚀介质防护效果，使得渣石粉具有更高的抗渗性和抗化学腐蚀能力。同时，本发明中还加入了硼砂，硼砂在微观条件下阻碍混凝土骨架周围如钙矾石等杂质的团聚，有效提高混凝土的流动性，有效的防止了混凝土结构的力学性能的降低。
Acid rain erosion resistant concrete admixture and preparation method thereof
一种抗酸雨侵蚀的混凝土掺和料及其制备方法
TIAN LIUHU (Autor:in) / LIU XIAOWEI (Autor:in) / ZHANG QINGHE (Autor:in) / YUAN LIANG (Autor:in) / WANG HANPENG (Autor:in) / JIANG BINGYOU (Autor:in) / ZHANG BING (Autor:in) / YANG FAWANG (Autor:in)
12.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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