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Flood prevention stone preparation material and preparation method thereof

A technology for preventing stones and stones, which is applied in the field of flood control and stone prevention materials and preparation, can solve the problems of low utilization rate, slow strength growth and low early strength of low-calcium fly ash, so as to save transportation costs and improve utilization rate. , the effect of reducing siltation

Pending Publication Date: 2021-10-12
YELLOW RIVER INST OF HYDRAULIC RES YELLOW RIVER CONSERVANCY COMMISSION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: The purpose of the present invention is to provide a kind of flood control stone material to solve the problems of low utilization rate of existing low-calcium fly ash, low early strength of flood control stone material, slow strength growth, high preparation cost and complicated methods. question

Method used

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  • Flood prevention stone preparation material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Flood prevention stone materials include the following raw materials according to weight percentage:

[0019] The low-calcium fly ash is the purchased Class F and Class II fly ash, the dosage is 50%; %; Industrial water glass and sodium hydroxide are the alkali activators that are configured in a mass ratio of 5:3, and the dosage is 8%, wherein: sodium hydroxide is analytically pure, and SiO in water glass 2 The mass content is 29.84%, NaO 2 The mass content is 13.36%, the water glass modulus is 2.3; the tap water is 12%.

Embodiment 2

[0021] Flood prevention stone materials include the following raw materials according to weight percentage:

[0022] The low-calcium fly ash is the purchased Class F and Class II fly ash, the dosage is 40%; the sediment dosage is 18%; the small stone is crushed stone with a particle size of 5-20mm continuous grading, and the dosage is 18% %; Industrial water glass and sodium hydroxide are the alkali activator that the mass ratio is 5:3 configuration, and dosage is 10%, wherein: sodium hydroxide is analytically pure, and SiO in water glass 2 The mass content is 29.84%, NaO 2 The mass content is 13.36%, the water glass modulus is 2.3; the tap water is 14%.

Embodiment 3

[0024] Flood prevention stone materials include the following raw materials according to weight percentage:

[0025] The low-calcium fly ash is the purchased Class F and Class II fly ash with a dosage of 57%; the dosage of sediment is 12%; the small stones are continuously graded crushed stones with a particle size of 5-20mm, and the dosage is 12% %; Industrial water glass and sodium hydroxide are the alkali activator that is configured as 5:3 by mass ratio, and dosage is 9%, wherein: sodium hydroxide is analytically pure, and SiO in water glass 2 The mass content is 29.84%, NaO 2 The mass content is 13.36%, the water glass modulus is 2.3; the tap water is 10%.

[0026] When preparing the flood control stone materials of Examples 1-3, mix the various materials together after weighing according to the proportion of raw materials, dry mix for 5 minutes, add water according to the required amount of water for the wet density, and stir with a pure slurry mixer. Stir at a low spe...

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Abstract

The flood prevention stone preparation material comprises the following raw materials in percentage by mass: 40%-60% of low-calcium fly ash, 24%-36% of a silt and stone mixture, 8%-10% of a composite alkali activator and 8%-16% of water. The preparation method comprises the following steps: mixing the raw materials according to the ratio, and dry-mixing; adding water according to the water consumption required by dry density, and stirring by using a neat paste stirrer, namely stirring at a low speed and then stirring at a high speed to obtain uniform pug; and performing autoclaved curing on the pug for one day, and then performing standard curing. The method avoids the disadvantage of too fast setting time of traditional alkali-activated cement, uses the Yellow River silt deposited in the middle and lower reaches of the Yellow River as the main material, uses local materials, saves the transportation cost, is energy-saving and environment-friendly, combines chemical excitation and thermal excitation modes, makes the activity of the fly ash fully exerted, and improves the utilization rate of the low-calcium fly ash. The preparation process is simple, the mechanical property of the product is improved, and the curing time is shortened.

Description

technical field [0001] The invention relates to building materials and their preparation, in particular to a flood-prevention rock-prevention material and a preparation method. Background technique [0002] The Yellow River sediment has a certain pozzolanic activity, and the Yellow River sediment mainly composed of SiO2, Al2O3, Fe2O3 and other silicon-alumina components as the basic raw material has great utilization value and wide application prospects, but its content can be converted into gelled products. The mineral composition of the material is less, and the strength of the Yellow River sediment material developed by the alkali-activated modification technology is generally low, and it is difficult to meet the strength standard for building materials. The activator is the key to the preparation of the alkali-activated cementitious material. The composition and parameters of the activator are The main reason that affects the performance of alkali-activated gelling mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
CPCC04B28/006C04B2201/50C04B14/02C04B14/068
Inventor 宋迎宾王萍蔡怀森刘慧宋万增张英豪宋海亭魏民邵菁周永海郑光和
Owner YELLOW RIVER INST OF HYDRAULIC RES YELLOW RIVER CONSERVANCY COMMISSION
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