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Ready-mixed mortar using recycled aggregate and preparation method of wet-mixed mortar

A recycled aggregate and wet-mixed mortar technology, applied in the field of mortar, can solve the problems of high cost of wet-mixed mortar, short mortar setting time, unstable raw materials, etc., and achieve the effects of high construction efficiency, light weight and prolonged construction time

Pending Publication Date: 2021-06-25
江苏洋河新城新材料有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, at present, the cost of raw materials for mortar is generally rising rapidly, especially the high price of various sands and cement, which leads to a great increase in the cost of wet-mixed mortar; in addition, the current raw materials are unstable and the construction is poor; the setting time of mortar is short, and the water retention of mortar is poor. Serious bleeding, low strength, large shrinkage and other quality problems

Method used

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  • Ready-mixed mortar using recycled aggregate and preparation method of wet-mixed mortar

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Embodiment 1

[0025] Embodiment 1, the present invention provides a technical solution: a wet-mixed mortar using recycled aggregate, including the following raw material components: 22% cement, 9% fly ash, 45% recycled aggregate, 20% river sand, Admixture 4%.

[0026] Among them, the recycled aggregate includes construction waste and nickel slag, and the mass percentages of the construction waste and nickel slag in the recycled aggregate are: 40% of construction waste and 60% of nickel slag.

[0027] Among them, the fineness of construction waste is 2.6-3.0, and the fineness of nickel slag is 2.6-3.2.

[0028] Among them, the cement adopts P.O 42.5 ordinary Portland cement.

[0029] Among them, the fly ash adopts F class II fly ash.

[0030] Among them, the fineness of Jiangsha is 1.0-1.5.

[0031] Among them, the admixture includes a water-retaining agent, an air-entraining agent, and a water-reducing agent. The mass percentages of the water-retaining agent, air-entraining agent, and wa...

Embodiment 2

[0040] Embodiment 2, the present invention provides a technical solution: a wet-mixed mortar using recycled aggregate, including the following raw material components: 23% cement, 10% fly ash, 45% recycled aggregate, 18% river sand, Admixture 4%.

[0041] Among them, the recycled aggregate includes construction waste and nickel slag, and the mass percentages of construction waste and nickel slag in the recycled aggregate are: construction waste 38% and nickel slag 62%.

[0042] Among them, the fineness of construction waste is 2.6-3.0, and the fineness of nickel slag is 2.6-3.2.

[0043] Among them, the cement adopts P.O 42.5 ordinary Portland cement.

[0044] Among them, the fly ash adopts F class II fly ash.

[0045] Among them, the fineness of Jiangsha is 1.0-1.5.

[0046] Among them, the admixture includes water-retaining agent, air-entraining agent and water-reducing agent, and the mass percentages of water-retaining agent, air-entraining agent and water-reducing agent...

Embodiment 3

[0050] Embodiment 3, the present invention provides a technical solution: a wet-mixed mortar using recycled aggregate, including the following raw material components: 23% cement, 10% fly ash, 47% recycled aggregate, 18% river sand, Admixture 2%.

[0051] Among them, the recycled aggregate includes construction waste and nickel slag, and the mass percentages of construction waste and nickel slag in the recycled aggregate are: construction waste 41% and nickel slag 59%.

[0052] Among them, the fineness of construction waste is 2.6-3.0, and the fineness of nickel slag is 2.6-3.2.

[0053] Among them, the cement adopts P.O 42.5 ordinary Portland cement.

[0054] Among them, the fly ash adopts F class II fly ash.

[0055] Among them, the fineness of Jiangsha is 1.0-1.5.

[0056]Among them, the admixture includes a water-retaining agent, an air-entraining agent and a water-reducing agent. The mass percentages of the water-retaining agent, air-entraining agent and water-reducing...

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Abstract

The invention discloses ready-mixed mortar using recycled aggregate. The ready-mixed mortar comprises the following raw material components: 15-23% of cement, 8-10% of fly ash, 33-47% of recycled aggregate, 16-20% of river sand and 1.5-4.6% of an additive. The cement, the fly ash, the recycled aggregate, the river sand and the additive are uniformly mixed with water according to a scientific and reasonable ratio to obtain the ready-mixed mortar; the preparation process is simple, and the prepared ready-mixed mortar meets various performance indexes of premixed masonry, plastering and ground mortar in the latest 'Ready-Mixed Mortar' GB / T25181-2019 standard; The ready-mixed mortar is light in weight, high in early strength and good in workability, the water-retaining property is greatly improved, the construction time is prolonged, and the binding power of hardened mortar and a matrix is improved; the construction efficiency is high, and the integrality is good; and meanwhile, two industrial solid wastes, namely the construction waste and the nickel slag, are used as raw materials, so that the cost is saved, and the environment is protected favourably.

Description

technical field [0001] The invention relates to the technical field of mortar, in particular to a wet-mixed mortar using recycled aggregate and a preparation method thereof. Background technique [0002] Mortar is made by mixing inorganic cementitious material with fine aggregate and water in proportion, also known as mortar; used for masonry and plastering projects, it can be divided into masonry mortar and plastering mortar, the former is used for bricks, stones, masonry The latter is used for plastering the surfaces of walls, floors, roofs and beam-column structures to meet protection and decoration requirements. [0003] Common mortar materials also have gypsum, lime paste or clay mixed with fibrous reinforcing materials and water to prepare a paste, called ash, paste, mud or cement; commonly used is hemp knife ash (lime paste mixed with hemp knife) ), paper ash (lime plaster mixed with paper), gypsum ash (lime plaster mixed with paper or glass fibers, etc.) and plaster...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/08C04B18/16
CPCC04B28/04C04B18/08C04B18/16C04B2201/50C04B18/144C04B14/068C04B2103/465C04B2103/304C04B2103/302Y02W30/91
Inventor 邵琳琳李晨曦张茂利谷重薛金彪李双虎
Owner 江苏洋河新城新材料有限责任公司