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Autoclaved aerated concrete block/slab containing novel mortar and preparation method

A technology of concrete block and autoclaved aeration, applied in the field of concrete blocks, can solve the problems of waste of resources, production process equipment, unstable bubbles, etc., and achieve the effects of good crystallinity, small drying shrinkage value, and improved strength

Inactive Publication Date: 2019-09-10
GUIZHOU KAILIN PHOSPHOGYPSUM INTEGRATION UTILIZATION +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 3. Patent application CN201810373927.8 discloses an autoclaved aerated concrete block, which belongs to the technical field of building materials and solves the problem of unstable air bubbles generated when the existing aerated concrete is foamed, including the following components by weight: Divide: 80-120 parts of cement; 150-200 parts of lime; 500-800 parts of modified fly ash; 5-10 parts of aluminum paste; 100-200 parts of water; 0.5-1.5 parts of modified foam stabilizer
Another example is that the Shanghai Quality and Technical Supervision Bureau inspected 19 batches of autoclaved aerated concrete block products produced by 80 enterprises in 2016. There were 16 batches of qualified products, all of which were qualified products, and the dry density level and strength level were both B06 grade and A3.5 grade blocks are regrettable, undoubtedly a great waste of resources and shame on advanced production technology and equipment

Method used

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  • Autoclaved aerated concrete block/slab containing novel mortar and preparation method
  • Autoclaved aerated concrete block/slab containing novel mortar and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] An autoclaved aerated concrete block / board containing a new type of mortar, made of the following raw materials in weight percentage: 47% of silicon material, 8% of new type of mortar, 8% of lime, 5% of aluminum powder paste, and the balance is waste The new mortar is made of the following raw materials in parts by weight: 95 parts of cement clinker, 25 parts of magnesium phosphate cement, and 2 parts of hemihydrate gypsum.

[0050] Further, the fineness of the new mortar is capable of passing through a 75 μm square hole sieve, the initial and final setting times are 70 minutes, and the effective CaO content is >63%; the siliceous material is sand or fly ash; the sand is silica sand , mud content 75%; the fly ash is solid waste after coal combustion in thermal power plants; the lime is quicklime, and its effective calcium oxide content is greater than 70%; the aluminum powder The plaster meets the following conditions: solid content ≥ 65%, active aluminum ≥ 85%, finene...

Embodiment 2

[0066] An autoclaved aerated concrete block / board containing a new type of mortar, made of the following raw materials in weight percentage: 77% of silicon material, 15% of new type of mortar, 15% of lime, 25% of aluminum powder paste, and the balance is waste The new mortar is made of the following raw materials in parts by weight: 120 parts of cement clinker, 40 parts of magnesium phosphate cement, and 8 parts of hemihydrate gypsum.

[0067] Further, the fineness of the new mortar is capable of passing through a 85 μm square hole sieve, the initial and final setting times are 140 minutes, and the effective CaO content is >63%; the siliceous material is sand or fly ash; the sand is silica sand , mud content 75%; the fly ash is solid waste after coal combustion in thermal power plants; the lime is quicklime, and its effective calcium oxide content is greater than 70%; the aluminum powder The plaster meets the following conditions: solid content ≥ 65%, active aluminum ≥ 85%, f...

Embodiment 3

[0083] An autoclaved aerated concrete block / board containing a new type of mortar, made of the following raw materials in weight percentage: siliceous material 50%, new type mortar 9%, lime 9%, aluminum powder paste 10%, and the balance is waste The new mortar is made of the following raw materials in parts by weight: 100 parts of cement clinker, 30 parts of magnesium phosphate cement, and 3 parts of hemihydrate gypsum.

[0084] Further, the fineness of the new mortar is such that it can pass through a 78 μm square hole sieve, the initial and final setting times are 80 minutes, and the effective CaO content is >63%; the siliceous material is sand or fly ash; the sand is silica sand , mud content 75%; the fly ash is solid waste after coal combustion in thermal power plants; the lime is quicklime, and its effective calcium oxide content is greater than 70%; the aluminum powder The plaster meets the following conditions: solid content ≥ 65%, active aluminum ≥ 85%, fineness 0.075...

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Abstract

The invention discloses an autoclaved aerated concrete block / slab containing novel mortar. The autoclaved aerated concrete block / slab is prepared from the following raw materials in percent by weight:47-77% of a siliceous material, 8-15% of the novel mortar, 8-15% of lime, 5-25% of an aluminum powder paste, and the balance a waste material. The novel mortar is prepared from the following raw materials in parts by weight: 95-120 parts of cement clinker, 25-40 parts of magnesium phosphate cement, and 2-8 parts of hemihydrate gypsum. The autoclaved aerated concrete block prepared by the method has a bursting, mould-sticking and damage depth of 1-3 mm, the depth is no more than 10 mm, the concrete block has a plane without bending, and the surface has no looseness, slabbing and oil stain. Blocks with a dry density grade of B06 and a compressive strength grade of A5.0 are produced, superior-grade blocks which accord with the national standard GB11968-2006 are produced, and compressive strength of the autoclaved aerated concrete block is improved.

Description

technical field [0001] The invention belongs to the technical field of concrete blocks, in particular to an autoclaved aerated concrete block / board containing novel mortar and a preparation method. Background technique [0002] Autoclaved aerated concrete, as a low-energy, environmentally friendly new building material, belongs to the building materials promoted by the state. Autoclaved aerated concrete blocks have the characteristics of light weight, high strength, heat preservation, heat insulation, sound absorption, fire prevention, etc., and are widely used in frame structures, exterior wall filling and interior wall partitions of cast-in-place concrete structures, and can also be used in anti-seismic circles Beams are used to construct the outer walls of multi-storey buildings or thermal insulation composite walls, and are also used for thermal insulation and heat insulation of building roofs. [0003] At present, new wall materials based on autoclaved aerated concrete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/34C04B38/02
CPCC04B28/34C04B2201/20C04B2201/50C04B14/304C04B7/00C04B22/143C04B22/064C04B22/04C04B18/04C04B14/06C04B32/02C04B38/02C04B18/08
Inventor 徐韦洪杨步雷钟继李泽钢刘小成杨淑芬吴唐鹏赵先明杨明胡军王泽松曾强朱国飞
Owner GUIZHOU KAILIN PHOSPHOGYPSUM INTEGRATION UTILIZATION
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