Production process of ecological dry-mixed mortar

A dry-mixed mortar and production process technology, applied in the field of building materials and resource recycling, can solve the problems of land occupation, low utilization rate, pollution of water and soil resources and atmospheric environment, etc., achieving low cost, simple preparation process, and alleviation of resources and environment. effect of stress

Inactive Publication Date: 2016-11-02
GANSU DELONG ECOLOGICAL BUILDING MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] According to statistics, my country currently produces about 1 billion tons of construction waste every year. A large number of piled or landfilled construction wastes occupy land, pollute water and soil resources and the atmospheric environment, and cause serious ecological loads.
Construction waste contains a large amount of construction waste sand, and the utilization rate is extremely low

Method used

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  • Production process of ecological dry-mixed mortar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] A kind of M10 ecological masonry dry-mix mortar described in the present invention: 205kg of ordinary portland cement (P·O42.5), 68kg of secondary fly ash, 540kg of recycled sand, 810kg of natural sand, hydroxypropyl methylcellulose 81g, sodium lauryl sulfate 65g. Add water and mix, and the water retention rate of the prepared ecological masonry dry-mix mortar is 92.1%, the consistency is 55mm, and the 28d compressive strength is 12.5MPa.

Embodiment 2

[0065] A kind of M5 ecological plastering dry-mixed mortar described in the present invention: Ordinary Portland cement (P·O42.5) 170kg, Ⅱ class fly ash 55kg, recycled sand 675kg, natural sand 675kg, hydroxypropyl methylcellulose 66g, 1.6kg redispersible latex powder, 110g defoamer, 1kg regenerated fiber. Add water and mix, and test the water retention rate of the prepared ecological plastering dry-mixed mortar is 95.1%, the consistency is 55mm, the 28d compressive strength is 6.3MPa, and the 14d bond tensile strength is 0.30MPa.

Embodiment 3

[0067] A kind of M25 ecological ground dry-mix mortar described in the present invention: Ordinary Portland cement (P·O42.5) 375kg, recycled sand 405kg, natural sand 945kg, hydroxypropyl methylcellulose 179g, redispersible latex powder 2.6 kg, water reducer 1.8kg, defoamer 135g. Add water and mix, and test the wear resistance of the prepared ecological ground dry-mix mortar 0.41g, 28d compressive strength 32.4MPa.

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Abstract

The invention discloses a production process of ecological dry-mixed mortar. Construction waste is sorted by a volumetric method to obtain waste sand, the waste sand is screened and broken to prepare reclaimed sand; and the reclaimed sand substitutes natural sand by a proportion of 30-50% to prepare ecological building of different strength grades, plastering and ground dry-mixed mortar. The invention uses construction waste for the preparation of reclaimed sand, which substitutes natural sand in large amount for the preparation of ecological dry-mixed mortar, alleviates the pressure on resources and the environment to some extent. The prepared ecological dry-mixed mortar product has similar performances as the dry-mixed mortar prepared from all natural sand preparation, and can be widely used.

Description

technical field [0001] The invention belongs to the technical field of building materials and resource recycling, and in particular relates to a production process of ecological dry-mixed mortar. Background technique [0002] With the steady development of the national economy and the advancement of urbanization, the construction industry has developed rapidly, and the demand for various mortars in the construction process has also increased sharply. As the main raw material for preparing mortar, natural sand is a non-renewable resource, and its large-scale exploitation seriously damages the ecological environment. In recent years, with the country's emphasis on environmental protection, local governments have successively formulated policies and regulations restricting the mining of natural sand, resulting in insufficient supply of natural sand in the market and high prices. [0003] According to statistics, my country currently produces about 1 billion tons of constructio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B14/06C04B18/08C04B18/16C04B24/16C04B24/38C04B14/38C04B16/06C04B103/30C04B103/50
CPCC04B28/04C04B18/08C04B18/167C04B14/064C04B24/383C04B24/16C04B14/38C04B16/06C04B2103/0057C04B2103/50C04B2103/302Y02W30/91
Inventor 徐德龙朱建辉张伟刘文欢钱长联徐德虎马立全吴文瀚
Owner GANSU DELONG ECOLOGICAL BUILDING MATERIAL CO LTD
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