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Phosphorus and magnesium material based cast-in-place phosphorus magnesium concrete of precast pillar joint and construction method

A technology of cast-in-place phosphorus-magnesium and prefabricated columns, which is applied in the direction of building and building structure to achieve the effects of excellent performance, lower dosage and lower porosity

Inactive Publication Date: 2018-11-06
GUIZHOU PHOSPHORUS MAGNESIUM MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are no relevant literature reports on the application of magnesium phosphate cement on the prefabricated column and beam joints of prefabricated buildings and how to construct it. In order to solve the above problems, the inventor has carried out further research on magnesium phosphate cement

Method used

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  • Phosphorus and magnesium material based cast-in-place phosphorus magnesium concrete of precast pillar joint and construction method
  • Phosphorus and magnesium material based cast-in-place phosphorus magnesium concrete of precast pillar joint and construction method
  • Phosphorus and magnesium material based cast-in-place phosphorus magnesium concrete of precast pillar joint and construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A prefabricated column-beam joint cast-in-place phosphorus-magnesium concrete based on phosphorus-magnesium materials is prepared from the following raw materials in parts by weight: 80 parts of magnesium phosphate cement, 3 parts of admixtures, 10 parts of admixtures, and 100 parts of aggregates.

[0051] Further, the magnesium phosphate cement is a mixture of dead-burned magnesia and monoammonium phosphate, and the ratio of dead-burned magnesia and monoammonium phosphate is 4:1; Calcined and ground, the magnesium oxide content is 88%, and the fineness is 60 mesh; the nutrient content of the monoammonium phosphate is 72%, and the fineness is 60 mesh; the additives are retarder, defoamer and A mixture of water reducing agents; the defoamer is a silicone powder defoamer; the retarder is boric acid, the fineness of the boric acid is 60 mesh, and the purity is not less than 95% in terms of mass percentage; The admixture is a mixture of fly ash and metakaolin; the fineness ...

Embodiment 2

[0061] A prefabricated column-beam joint cast-in-place phosphorus-magnesium concrete based on phosphorus-magnesium materials is prepared from the following raw materials in parts by weight: 120 parts of magnesium phosphate cement, 18 parts of admixtures, 60 parts of admixtures, and 400 parts of aggregates.

[0062] Further, the magnesium phosphate cement is a mixture of dead-burned magnesia and monoammonium phosphate, and the ratio of dead-burned magnesia and monoammonium phosphate is 1:1; It is obtained by calcining and grinding, its magnesium oxide content is 95%, and its fineness is 400 mesh; the nutrient content of said monoammonium phosphate is 72%, and its fineness is 400 mesh; said admixture is retarder, defoamer and A mixture of water reducing agents; the defoamer is a silicone powder defoamer; the retarder is borax, the fineness of the borax is 400 mesh, and the purity is not less than 95% in terms of mass percentage; The admixture is a mixture of fly ash and metakaol...

Embodiment 3

[0072] A prefabricated column-beam joint cast-in-place phosphorus-magnesium concrete based on phosphorus-magnesium materials is prepared from the following raw materials in parts by weight: 83 parts of magnesium phosphate cement, 8 parts of admixtures, 12 parts of admixtures, and 105 parts of aggregates.

[0073] Further, the magnesium phosphate cement is a mixture of dead-burned magnesia and monoammonium phosphate, and the ratio of dead-burned magnesia and monoammonium phosphate is 3.5:1; It is obtained by calcining and grinding, its magnesium oxide content is 89%, and its fineness is 70 mesh; the nutrient content of said monoammonium phosphate is 72%, and its fineness is 70 mesh; said additives are retarder, defoamer and A mixture of water reducing agents; the defoamer is a silicone powder defoamer; the retarder is borax, the fineness of the borax is 70 mesh, and the purity is not less than 95% in terms of mass percentage; The admixture is a mixture of fly ash and metakaolin...

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Abstract

The invention discloses a phosphorus and magnesium material based cast-in-place phosphorus magnesium concrete of a precast pillar joint. The phosphorus and magnesium material based cast-in-place phosphorus magnesium concrete of the precast pillar joint is prepared through the following raw materials in parts by weight: 80-120 parts of magnesium phosphate cement, 3-18 parts of an additive, 10-40 parts of admixture, and 100-400 parts of aggregate. The invention also discloses a construction method of the phosphorus and magnesium material based cast-in-place phosphorus magnesium concrete of the precast pillar joint. The cast-in-place phosphorus magnesium concrete is resistant to corrosion, high in frost thawing resistance, high in durability, high in mobility, easy to pour, low in shrinkage,hard to crack, high in compactness, and high in adaptability to the environmental temperature, and can be constructed at anytime; an oxide film is formed on the surface of the concrete; the attachmentperformance relative to the precast pillar joint is high, and the adhering intensity is high; the concrete is short in setting time, high in early strength, and short in maintenance time; the concrete can be coagulated and hardened after being poured for 20-40min; the compressive strength is more than 40MPa after 1.5-3h after pouring; the concrete can be put into use once being poured; the construction efficiency is improved; and the cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of prefabricated buildings, and in particular relates to cast-in-place phosphorus-magnesium concrete for prefabricated column-beam joints based on phosphorus-magnesium materials and a construction method. Background technique [0002] With the continuous acceleration of the urbanization process in our country, in order to realize the sustainable and healthy development of urban and rural construction, it is proposed to change the mode of urban and rural construction, promote the transformation and upgrading of the construction industry, and vigorously promote "construction industrialization" as one of the top tasks. One of the important carriers of construction industrialization is the prefabricated building concrete structure, and the prefabricated column-beam node connection technology is the key technology of the prefabricated concrete structure. The connection of prefabricated columns and prefabricated b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/34C04B12/02E04B1/21
CPCC04B12/02C04B28/344C04B2201/50E04B1/21C04B18/08C04B22/08C04B24/42C04B14/106C04B14/06C04B14/02C04B2103/302
Inventor 刘荣莫人普龙忠兴申鹏王敏刘俊才谭万燕
Owner GUIZHOU PHOSPHORUS MAGNESIUM MATERIAL CO LTD
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