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Flyash-based polymer concrete material and preparation method thereof

A fly ash and polymer technology, applied in the field of concrete materials, can solve the problems of easy cracking, high strength variability and low strength of the cement-stabilized crushed stone layer, and achieves favorable mechanical properties for pavement roadbed and base construction and planning, and good mechanical properties. , the effect of high early strength

Active Publication Date: 2015-04-08
SHANGHAI PUDONG NEW AREA CONSTR GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a fly ash-based polymer concrete material and its preparation method to solve the technical problems of easy cracking of cement-stabilized gravel layers, large strength variability, low strength and high energy consumption in the prior art

Method used

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  • Flyash-based polymer concrete material and preparation method thereof
  • Flyash-based polymer concrete material and preparation method thereof

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Embodiment 1

[0024] The geopolymer concrete material of the present invention has a production and construction method similar to ordinary cement-stabilized crushed stone materials, and it is mixed and constructed at normal temperature on site during use. The specific preparation method is as follows:

[0025] (1) Geopolymer slurry composition: fly ash 35%, metakaolin 10%, cement 10.5%, coal gangue and slag 3.5%, water glass 25%, potassium silicate solution 12.5%, retarder 0.5%, Deionized water 3%. Add the raw materials of the above components into the mixer and mix them evenly on site;

[0026] (2) Preparation of geopolymer concrete material: mix and stir the prepared geopolymer slurry and certain graded aggregates in proportion on site for 2 to 4 minutes until the aggregates are evenly dispersed to make fly ash-based polymer concrete Material. The ratio of the aggregate to the geopolymer slurry is: 89 parts of the aggregate and 11 parts of the geopolymer slurry. See Table 1 for aggre...

Embodiment 2

[0033] The geopolymer concrete material of the present invention has a production and construction method similar to ordinary cement-stabilized crushed stone materials, and it is mixed and constructed at normal temperature on site during use. The specific preparation method is as follows:

[0034] (1) Geopolymer slurry composition: fly ash 45%, metakaolin 5%, cement 6.5%, coal gangue and slag 3.5%, water glass 29%, potassium silicate solution 8%, retarder 1%, Deionized water 2%. Add the raw materials of the above-mentioned components into the mixer on site and mix them evenly.

[0035] (2) Preparation of geopolymer concrete material: mix and stir the prepared geopolymer slurry and certain graded aggregates in proportion on site for 2 to 4 minutes until the aggregates are evenly dispersed to make fly ash-based polymer concrete Material. The ratio of the aggregate to the geopolymer slurry is: 89 parts of the aggregate and 11 parts of the geopolymer slurry. The aggregate grad...

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Abstract

The invention discloses a flyash-based polymer concrete material and a preparation method and an application thereof. The flyash-based polymer concrete material comprises the following components in percentage by mass: 25%-45% of flyash, 0-15% of metakaolin, 10%-15% of cement, 0-5% of coal gangue and slag, 25%-35% of an alkali activator, 0.5%-1% of a retarder and 1%-5% of deionized water. An alkali-activated flyash-based polymer is adopted as a main gel material, so as to prepare an inorganic polymer concrete material; the polymer concrete material has the characteristics of high environmental protection property, good mechanical property and high early strength.

Description

technical field [0001] The invention belongs to the technical field of concrete materials, and in particular relates to a fly ash base polymer concrete material and a preparation method thereof. Background technique [0002] The cement-stabilized gravel layer is the main load-bearing layer of the pavement structure, and is widely used in highways and urban roads due to its good bearing capacity and economical characteristics. However, with the passage of time, the heterogeneous system of cement-stabilized macadam will continue to change. As a result, the macroscopic physical properties of the mixture, such as strength, fatigue resistance and shrinkage resistance, will change, causing pavement diseases, such as common The cracks in the pavement will eventually affect the performance of the pavement. In response to the above problems, researches on quality control of raw materials and improvement of construction techniques have emerged in an endless stream; however, diseases ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B28/04
Inventor 罗芳艳王晓杰闫国杰刘钢李军代施曙东王腾飞马利志徐韵淳邱轶李交夏庆宇邓国民袁月钱婷周维维姚凯
Owner SHANGHAI PUDONG NEW AREA CONSTR GRP CO LTD
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