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A platform for research: civil engineering, architecture and urbanism
Lead-zinc metallurgical slag composite admixture for prefabricated building and preparation method of lead-zinc metallurgical slag composite admixture
The invention relates to the technical field of fabricated building materials, and particularly discloses a lead-zinc metallurgical slag composite admixture for fabricated buildings and a preparation method of the lead-zinc metallurgical slag composite admixture. The lead-zinc metallurgical slag composite admixture for the prefabricated building, provided by the invention, is prepared from 40 to 60 parts of desulfurized lead-zinc metallurgical slag, 20 to 40 parts of mineral powder, 3 to 6 parts of silane coupling agent modified magnesia and 2 to 4 parts of sodium hydroxide. A large amount of glass bodies exist in the lead-zinc metallurgical slag and can be decomposed in an alkali environment, so that the activity of the composite admixture is improved, and the desulfurized lead-zinc metallurgical slag ensures the strength and durability of the concrete; the mineral powder can participate in secondary hydration of the concrete, so that the hydration heat is reduced, and the workability is improved; the magnesia can be hydrated in the cement paste to generate magnesium hydroxide to generate expansion, so that the shrinkage cracking of the concrete is effectively prevented; the silane coupling agent is utilized to modify the surface of magnesia, so that the water repellency and durability of the material can be improved. Through different raw materials in a specific ratio, the early strength of the prefabricated building concrete can be improved.
本发明涉及装配式建筑材料技术领域，具体公开一种装配式建筑用铅锌冶金渣复合掺合料及其制备方法。本发明提供的装配式建筑用铅锌冶金渣复合掺合料包括脱硫铅锌冶金渣40～60份、矿粉20～40份、硅烷偶联剂改性菱苦土3～6份和氢氧化钠2～4份。铅锌冶金渣存在大量的玻璃体，可在碱环境中分解，提高复合掺合料的活性，脱硫铅锌冶金渣保证了混凝土的强度和耐久性；矿粉可参与混凝土的二次水化，降低水化热，改善和易性；菱苦土可在水泥浆体中水化生成氢氧化镁产生膨胀，有效防止混凝土的收缩开裂；利用硅烷偶联剂对菱苦土表面进行改性，可提高材料的斥水性和耐久性。本发明通过特定配比的不同原料，可以提高装配式建筑混凝土的早期强度。
Lead-zinc metallurgical slag composite admixture for prefabricated building and preparation method of lead-zinc metallurgical slag composite admixture
The invention relates to the technical field of fabricated building materials, and particularly discloses a lead-zinc metallurgical slag composite admixture for fabricated buildings and a preparation method of the lead-zinc metallurgical slag composite admixture. The lead-zinc metallurgical slag composite admixture for the prefabricated building, provided by the invention, is prepared from 40 to 60 parts of desulfurized lead-zinc metallurgical slag, 20 to 40 parts of mineral powder, 3 to 6 parts of silane coupling agent modified magnesia and 2 to 4 parts of sodium hydroxide. A large amount of glass bodies exist in the lead-zinc metallurgical slag and can be decomposed in an alkali environment, so that the activity of the composite admixture is improved, and the desulfurized lead-zinc metallurgical slag ensures the strength and durability of the concrete; the mineral powder can participate in secondary hydration of the concrete, so that the hydration heat is reduced, and the workability is improved; the magnesia can be hydrated in the cement paste to generate magnesium hydroxide to generate expansion, so that the shrinkage cracking of the concrete is effectively prevented; the silane coupling agent is utilized to modify the surface of magnesia, so that the water repellency and durability of the material can be improved. Through different raw materials in a specific ratio, the early strength of the prefabricated building concrete can be improved.
本发明涉及装配式建筑材料技术领域，具体公开一种装配式建筑用铅锌冶金渣复合掺合料及其制备方法。本发明提供的装配式建筑用铅锌冶金渣复合掺合料包括脱硫铅锌冶金渣40～60份、矿粉20～40份、硅烷偶联剂改性菱苦土3～6份和氢氧化钠2～4份。铅锌冶金渣存在大量的玻璃体，可在碱环境中分解，提高复合掺合料的活性，脱硫铅锌冶金渣保证了混凝土的强度和耐久性；矿粉可参与混凝土的二次水化，降低水化热，改善和易性；菱苦土可在水泥浆体中水化生成氢氧化镁产生膨胀，有效防止混凝土的收缩开裂；利用硅烷偶联剂对菱苦土表面进行改性，可提高材料的斥水性和耐久性。本发明通过特定配比的不同原料，可以提高装配式建筑混凝土的早期强度。
Lead-zinc metallurgical slag composite admixture for prefabricated building and preparation method of lead-zinc metallurgical slag composite admixture
一种装配式建筑用铅锌冶金渣复合掺合料及其制备方法
LIU JUANHONG (author) / LIAO DEJIN (author) / LIU ZHAO (author) / YANG CHANG'AN (author) / ZHENG YUEFEI (author) / JIANG XI'AI (author)
2024-01-02
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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