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Environmentally-friendly high-strength dry-mixed mortar and preparation method thereof

A dry-mixed mortar, high-strength technology, applied in the field of building materials, can solve the problems of time, low compressive strength, low flexural strength, and weak industrial load-bearing capacity that affect the construction process. properties, excellent compressive properties and crack resistance

Active Publication Date: 2019-09-10
江苏能高节能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dry-mixed mortar currently on the market has the following problems: low early strength, long setting time, which affects the construction process and the time when the project is put into use; low compressive and flexural strength, weak industrial load-bearing capacity, which is not conducive to the construction of factories The promotion and application of warehouses, parking lots, shopping malls and other places with relatively high load-bearing requirements

Method used

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  • Environmentally-friendly high-strength dry-mixed mortar and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] An environment-friendly high-strength dry-mixed mortar, which includes the following components in parts by weight: 30 parts of Portland composite cement, 50 parts of recycled aggregate of discarded bricks, methyl hydroxyethyl cellulose 0.1 part of ether, 20 parts of superfine slag powder, 5 parts of phosphogypsum and 0.1 part of modified alkali-resistant glass fiber, the strength grade of Portland composite cement is 42.5R; the particle size of recycled aggregate is 0.01mm; ultrafine slag The particle size of the powder is 1 μm; the modified alkali-resistant glass fiber is made of alkali-resistant glass fiber, Al(NO 3 ) 3 9H 2 O and citric acid prepared, alkali-resistant glass fibers with a diameter of 5 μm and a length of 1 mm.

[0038] Adopt above-mentioned raw material to prepare a kind of environment-friendly high-strength dry-mixed mortar, the preparation method of this environment-friendly high-strength dry-mixed mortar comprises the following steps:

[0039] ...

Embodiment 2

[0044] An environment-friendly high-strength dry-mixed mortar, the environment-friendly high-strength dry-mixed mortar includes the following components in parts by weight: 35 parts of Portland composite cement, 55 parts of waste cement block regenerated aggregate, methyl hydroxypropyl cellulose 0.5 parts of ether, 22 parts of ultra-fine slag powder, 7 parts of phosphogypsum and 0.2 parts of modified polypropylene fiber; the strength grade of Portland composite cement is 42.5R; the particle size of ultra-fine slag powder is 2 μm; The particle size is 0.5mm; the modified polypropylene fiber is made of polypropylene fiber, Al(NO 3 ) 3 9H 2 O and citric acid prepared, polypropylene fibers with a diameter of 6 μm and a length of 2 mm.

[0045] Adopt above-mentioned raw material to prepare a kind of environment-friendly high-strength dry-mixed mortar, the preparation method of this environment-friendly high-strength dry-mixed mortar comprises the following steps:

[0046] (1) Pr...

Embodiment 3

[0051] An environment-friendly high-strength dry-mixed mortar, which includes the following components in parts by weight: 40 parts of Portland composite cement, 65 parts of recycled aggregate from discarded mortar blocks, methyl hydroxyethyl cellulose 1.5 parts of ether, 25 parts of ultrafine slag powder, 10 parts of phosphogypsum and 0.5 part of modified polyvinyl alcohol fiber; the strength grade of Portland composite cement is 42.5R; the particle size of ultrafine slag powder is 3 μm; recycled aggregate The particle size is 1.5mm; the modified polyvinyl alcohol fiber is made of polyvinyl alcohol fiber, Al(NO 3 ) 3 9H 2 O and citric acid were prepared, and the diameter of polyvinyl alcohol fibers was 7.5 μm and the length was 3 mm.

[0052] Adopt above-mentioned raw material to prepare a kind of environment-friendly high-strength dry-mixed mortar, the preparation method of this environment-friendly high-strength dry-mixed mortar comprises the following steps:

[0053] (1...

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Abstract

The invention discloses environmentally-friendly high-strength dry-mixed mortar and a preparation method thereof. The environmentally-friendly high-strength dry-mixed mortar comprises the following components: cement, building aggregate, cellulose ether, ultrafine mineral slag powder, phosphogypsum and modified fibers. The preparation method of the environmentally-friendly high-strength dry-mixedmortar comprises the following steps: preparing the modified fibers; and weighing the building aggregate, the modified fibers, the cement, the cellulose ether, the ultrafine mineral slag powder and the phosphogypsum, throwing the weighed materials into a material mixing machine, and performing uniform mixing to obtain the environmentally-friendly high-strength dry-mixed mortar. According to the mortar and method provided by the invention, the raw materials have a wide source, the product components are reasonable, the components have a synergistic effect, and the preparation method is simple,has no pollution to the environment, can utilize the building solid waste, and has outstanding economic and social benefits and good market application prospects; and experimental results show that the environmentally-friendly high-strength dry-mixed mortar prepared by the method has the characteristics of high strength, good water retention performance, short setting time and a low consistency loss rate.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an environment-friendly high-strength dry-mixed mortar and a preparation method thereof. Background technique [0002] With the continuous improvement of project quality, environmental protection requirements and civilized construction requirements, the shortcomings and limitations of mortar mixing on the construction site have become more and more prominent, and dry-mixed mortar has been more and more popular due to its advantages in technical performance and social benefits. people's favor. Dry-mixed mortar is one of the emerging dry-mixed materials in the field of building materials. It is a mixture of cement as the main binder and dry-screened fine aggregates, mineral admixtures, reinforcing materials and admixtures in a certain proportion. . [0003] Dry-mixed mortar began to be gradually promoted and applied in our country in the early 21st century. In June 20...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B20/02
CPCC04B28/04C04B20/023C04B2201/50C04B18/167C04B24/383C04B18/141C04B18/0445C04B14/42C04B16/0633C04B16/0641
Inventor 高飞
Owner 江苏能高节能科技有限公司
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