High-strength alkali activated gel material applicable to special environments

Abstract

The invention discloses a high-strength alkali activated gel material applicable to special environments. On the basis of a traditional alkali activated gel material, iron-ore slag is adopted and ironand cesium hydrotalcite are added; the main function of the iron and cesium hydrotalcite is as follows: iron and cesium hydrotalcite, belonging to anionic layered compounds, can form ion exchange with a large quantity of components of CaO, SiO2, Al2O3, MgO, MnO, Fe2O3, and the like, in iron mine powder, under the action of liquid sodium silicate and catalytic effect of cesium element, and can achieve an excellent bonding effect; iron and cesium hydrotalcite with a layered structure can achieve a buffering effect under the condition of impact of external forces and can enhance the compressivestrength of the material. The preparation process of the high-strength alkali activated gel material is as follows: uniformly mixing iron-ore slag and iron and cesium hydrotalcite; adding into liquidsodium silicate and stirring so as to form ion exchange; adding the rest raw materials; putting into a mold, heating and steaming. Compared with the traditional preparation method, the preparation process according to the invention has the advantages of excellent bonding effect and higher strength of materials.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a high-strength alkali-activated gel material applicable to special environments. Background technique [0002] Since the 1940s, people have stimulated industrial waste residues (metakaolin, slag, fly ash, etc.) . Since the alkali-activated gelling material uses industrial waste residue as the main raw material, and has unique advantages in early strength, high temperature resistance, acid corrosion resistance, and consolidation of metal ions, it has attracted widespread attention worldwide since its birth. focus on. [0003] A lot of research has been done at home and abroad on the preparation of alkali-activated gelling materials from waste residues. For example, Davidovits of France has developed a novel alkali-activated metakaolin cementitious material with metakaolin as the main raw material; patent document CN1699252A discloses a kind of alkali-activated carbo...

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Problems solved by technology

[0004] The strength of the above-disclosed alkali-activated gelling materials is generally at 6-8MPa in flexural strength, 25-60MPa in compressive strength, and a small number of compressive strengths can reach 80MPa, which can meet general building needs, but for my country's Sichuan mountainous areas, For some earthquake-prone areas such as most of Japan, there are still certain safety hazards, so it is necessary to develop a high-strength alkali-activated gel material that can be applied in special environments

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