Coal gangue based geopolymer and preparation method thereof
A coal gangue and polymer technology, applied in the field of building materials, can solve the problems of poor utilization of industrial solid waste and low compressive strength of geopolymers, and achieve the effects of excellent durability, high mechanical strength and low permeability
Inactive Publication Date: 2019-11-08
深圳屹米达环保科技有限公司
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The invention belongs to the technical field of construction materials, and especially relates to a coal gangue based geopolymer. The geopolymer includes the following raw materials and components: 25%-50% of coal gangue coarse aggregate, 20%-40% of coal gangue fine aggregate, 10%-30% of coal gangue powder, 5%-15% of blast furnace slag, 5%-10% of desulfurized gypsum, 1%-10% of an alkali activator,water, and the like. The coal gangue based geopolymer of the invention utilizes industrial solid waste coal gangue as a main raw material, the industrial solid waste coal gangue replaces conventionalsand fine aggregate, stone coarse aggregate, fly ash, and the like, through a polymerization reaction between components such as coal gangue, the blast furnace slag, the desulfurization gypsum, and the alkali activator, the coal gangue based geopolymer is good in stability and is high in strength, the compressive strength can reach 35 MPa after maintenance for three days, the compressive strengthcan reach 60 MPa after maintenance for twenty-eight days, and an early strength agent, cement or the fly ash, and the like do not need to be additionally added.
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Property | Measurement | Unit |
Compressive strength | >= 25.0 | mPa |
Compressive strength | >= 50.0 | mPa |
Compressive strength | 60.0 | mPa |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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