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Vegetation concrete block and preparation method thereof

A concrete block and block technology, applied in the field of building materials, can solve the problems of nickel-iron slag not being widely used, adverse effects on the stability of cement concrete, and slow hydration reaction, so as to speed up mold turnover and benefit The effect of strength and fast setting speed

Active Publication Date: 2020-12-04
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, ferronickel slag contains higher SiO 2 , lower CaO and Al 2 o 3 , low activity; ground into fine powder, when mixed with water alone, the hydration reaction is very slow and the cementation is low
Ferronickel slag contains high MgO, usually higher than 20%, which may have adverse effects on the stability of cement concrete
Therefore, ferronickel slag has not been widely used

Method used

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  • Vegetation concrete block and preparation method thereof
  • Vegetation concrete block and preparation method thereof
  • Vegetation concrete block and preparation method thereof

Examples

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Effect test

preparation example Construction

[0094] A method for preparing a planting concrete block comprises the following steps.

[0095] Step 1. Weighing: Weigh the ferronickel slag aggregate with the set formula, dead-burned magnesia, silicon, silicon-aluminum admixture, redispersible latex powder, water-releasing material, industrial grade potassium dihydrogen phosphate, Superplasticizer and mixing water.

[0096] Step 2, preparing a saturated solution of potassium dihydrogen phosphate: dissolving the industrial grade potassium dihydrogen phosphate weighed in step 1 in water to form a saturated solution of potassium dihydrogen phosphate.

[0097] Step 3. Mixing materials: the ferronickel slag aggregate weighed in step 1, dead-burned magnesia, silicon, silicon-aluminum admixture, redispersible latex powder, water-releasing material, high-efficiency water reducer and mixing water , add to the mixer in turn, stir evenly, and discharge.

[0098] Step 4. Forming: pour the mixture evenly mixed in step 3 into a block mo...

Embodiment 1

[0105] A method for preparing a planting concrete block comprises the following steps.

[0106] Step 1. Weighing: in parts by mass, successively weigh the MgO content of 90%, Blaine specific surface area of ​​550m 2 40 parts per kg of dead-burned magnesia, 150 parts of ferronickel slag aggregate with MgO content of 25%, particle size of 10-20mm, Blaine specific surface area of ​​550m 2 20 parts per kg of S105 mineral powder, 0.3 parts of redispersible latex powder, Blaine specific surface area 500m 2 1 part of diatomaceous earth per kg, 10 parts of industrial grade potassium dihydrogen phosphate, 0.5 parts of polycarboxylate superplasticizer, and 10 parts of mixing water.

[0107] Step 2, preparing a saturated solution of potassium dihydrogen phosphate: dissolving the industrial grade potassium dihydrogen phosphate weighed in step 1 in water to form a saturated solution of potassium dihydrogen phosphate.

[0108] Step 3. Mixing materials: Add the heavy-burned magnesia, ferro...

Embodiment 2

[0114] A method for preparing a planting concrete block comprises the following steps.

[0115] Step 1. Weighing: in parts by mass, successively weigh MgO content of 92%, Blaine specific surface area of ​​500m 2 20 parts / kg of dead-burned magnesia, 170 parts of ferronickel slag aggregate with MgO content of 27%, particle size of 10-20mm, Blaine specific surface area of ​​3000m 2 / kg silica fume 0.5 parts, redispersible latex powder 0.8 parts, Blaine specific surface area 500m 2 1 part of sodium bentonite per kg, 6 parts of industrial grade potassium dihydrogen phosphate, 1 part of polycarboxylate superplasticizer, and 12 parts of mixing water.

[0116] Step 2, preparing a saturated solution of potassium dihydrogen phosphate: dissolving the industrial grade potassium dihydrogen phosphate weighed in step 1 in water to form a saturated solution of potassium dihydrogen phosphate.

[0117] Step 3. Mixing: add the heavy-burned magnesia, ferronickel slag aggregate, micro-silica fum...

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Abstract

The invention discloses a vegetation concrete block and a preparation method thereof, and belongs to the field of building materials, the vegetation concrete block comprises the following substances by mass: 40 to 60 parts of dead burned magnesia, 150 to 170 parts of ferronickel slag aggregate, 5 to 20 parts of siliceous and silicon-aluminum admixture, 0.2 to 0.8 part of redispersible latex powder, 1 to 2 parts of water release material, 8 to 10 parts of potassium dihydrogen phosphate, 0.5 to 1 part of superplasticizer, and 5 to 10 parts of mixing water; the preparation method comprises the following steps: preparing a potassium dihydrogen phosphate saturated solution as a spray liquid, proportioning other raw materials, stirring, carrying out vibration molding, carrying out spray treatment, removing the mold, carrying out spray maintenance, inspecting, stacking the finished product and the like. After a cementing material is hardened, the phase is stable, the structure is compact, thecementing material has good carbonization resistance, abrasion resistance and corrosion resistance, the cementing material is endowed with good biocompatibility due to the weakly alkaline characteristic, and the cementing material is endowed with an excellent water quality improvement function together with the phase structure and the porous structure.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a planting concrete block and a preparation method thereof. Background technique [0002] Vegetative concrete block is a new type of slope protection material that can well combine engineering protection and ecological restoration. It is required to have the functions of adapting to plant growth and improving ecological conditions. [0003] The strength of general-purpose Portland cement concrete is mainly derived from cement hydration products C-S-H gel, calcium hydroxide, ettringite phase, and low-sulfur hydrated sulfoaluminate, which can only exist stably under high alkalinity and harden The pH of the post-pore solution is as high as 12 or more. If this kind of high alkalinity portland cement concrete is used as slope protection material, since the suitable pH value of most plants is 3.5-8.5, only a small number of plants suitable for high alkali resistance can be selected. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/10
CPCC04B28/105C04B2201/50C04B18/144C04B18/12C04B14/08C04B22/16C04B24/24C04B2103/302C04B18/146C04B14/104C04B18/08
Inventor 张风臣周靖靖张坤吉旭平
Owner HOHAI UNIV
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