A kind of road concrete and preparation method thereof

A concrete and road technology, applied in the field of concrete materials, can solve problems such as solid waste discharge and environmental pollution, and achieve the effects of increasing compactness, reducing production costs, and avoiding performance defects

Active Publication Date: 2019-02-26
YOUNGWOO CHEMTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The object of the present invention is to provide a kind of concrete and preparation method thereof with ferronickel slag micropowder as the main admixture, the utilization rate of ferronickel slag is improved, thereby solved the problem of metallurgical industry solid waste discharge and environmental pollution, and also for Preparation of road concrete provides a source of raw material and reduces production costs

Method used

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  • A kind of road concrete and preparation method thereof

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Effect test

Embodiment 1

[0026] The invention provides a kind of road concrete, each component of this concrete is: portland cement 7.5kg, ferronickel slag micropowder 2.1kg, slag powder 1.5kg, fly ash 0.6kg, steel slag micropowder 0.5kg, fine aggregate 24.9kg, coarse aggregate 30.6kg, admixture 120g, activator 150g, water 5.1kg; the Portland cement is P.O 42.5 grade, specific surface area is 350-600m 2 / kg; the specific surface area of ​​ferronickel slag powder is 400-550m 2 / kg; the specific surface area of ​​slag powder is 380-500m 2 / kg; the specific surface area of ​​fly ash is 450-580m 2 / kg; the specific surface area of ​​steel slag powder is 430-550m 2 / kg; the admixture is polycarboxylate high-efficiency water reducer; the activator includes 80g of sodium cocoyl sulfate and 70g of polyacrylamide; the fine aggregate is continuously graded, and the particle size of the fine aggregate is controlled at 0.15-4.75mm. The fineness modulus is 3.2, and the coarse aggregate particle size is controll...

Embodiment 2

[0031] The invention provides a kind of road concrete, each component of this concrete is: portland cement 6.0kg, ferronickel slag micropowder 2.7kg, slag powder 2.5kg, fly ash 0.5kg, steel slag micropowder 0.8g, fine aggregate 4.3kg, coarse aggregate 30.9kg, admixture 126g, activator 95g, water 4.8kg; the Portland cement is P.O 42.5 grade, specific surface area is 350-600m 2 / kg; the specific surface area of ​​ferronickel slag powder is 400-550m 2 / kg; the specific surface area of ​​slag powder is 380-500m 2 / kg; the specific surface area of ​​fly ash is 450-580m 2 / kg; the specific surface area of ​​steel slag powder is 430-550m 2 / kg; the admixture is polycarboxylate high-efficiency water reducer; the activator includes 45g of water glass and 50g of diethanol monoisopropanolamine; the fine aggregate adopts continuous gradation, and the particle size of the fine aggregate is controlled at 0.15-4.75mm. The fineness modulus is 3.2, and the coarse aggregate particle size is ...

Embodiment 3

[0036] The invention provides a kind of road concrete, each component of this concrete is: portland cement 8.0kg, ferronickel slag micropowder 2.5kg, slag powder 1.1kg, fly ash 0.8kg, steel slag micropowder 0.7kg, fine aggregate 23.8kg, coarse aggregate 29.3kg, admixture 124g, activator 200g, water 5.4kg; the Portland cement is P.O 42.5 grade, specific surface area is 350-600m 2 / kg; the specific surface area of ​​ferronickel slag powder is 400-550m 2 / kg; the specific surface area of ​​slag powder is 380-500m 2 / kg; the specific surface area of ​​fly ash is 450-580m 2 / kg; the specific surface area of ​​steel slag powder is 430-550m 2 / kg; the admixture is polycarboxylate high-efficiency water reducer; the activator is sodium cocoyl sulfate 200g; the fine aggregate adopts continuous gradation, the particle size of fine aggregate is controlled at 0.15-4.75mm, and the fineness modulus is 3.2 , the coarse aggregate particle size is controlled at 4.75-26.5mm.

[0037] The pre...

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Abstract

The invention discloses a road concrete, which comprises the following components in parts by mass: 50-80 parts of Portland cement, 20-40 parts of ferronickel slag micropowder, 10-24 parts of slag powder, and 5-10 parts of fly ash 5-10 parts of fine steel slag powder, 40-300 parts of fine aggregate, 300-400 parts of coarse aggregate, 1.2-1.5 parts of admixture, 0.8-2 parts of activator, and 50-80 parts of water. The road concrete of the invention is prepared by stirring and mixing components in a mixer, the preparation method is simple, and the technical requirements are not high. Add ferronickel slag micropowder and slag powder to the road concrete of the present invention as the main admixture, exert the "superposition effect" between the various admixture components, complement each other's advantages, and avoid the performance defects caused by single admixture of a certain component; By adding the activator, the utilization rate of ferronickel slag powder can be significantly improved, and the production cost can be reduced. At the same time, the activity of ferronickel slag powder, slag powder, fly ash and steel slag powder can be fully exerted, which greatly improves the resistance of road concrete. flexural strength and compressive strength.

Description

technical field [0001] The invention belongs to the technical field of concrete materials, and in particular relates to a road concrete with ferronickel slag micropowder as a main admixture and a preparation method thereof. Background technique [0002] With the rapid development of our country's social economy, the road transport industry is playing an increasingly important role in it. The country is expected to invest two trillion yuan in the establishment of the "7918" national transportation highway network in 30 years. Because concrete is an essential raw material for road construction, it has the advantages of low cost, high pressure resistance, and not easily damaged by the natural environment. Concrete has been widely used in road construction. However, with the rapid development of roads, especially highway construction, the demand for concrete is also increasing, and the cementitious material required for preparing concrete is mainly cement. As we all know, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B18/14C04B18/08
CPCC04B28/04C04B2111/0075C04B2201/50C04B18/141C04B18/144C04B18/142C04B18/08C04B14/00C04B2103/302C04B24/16C04B24/2652C04B22/08C04B24/122Y02W30/91
Inventor 王义高闯
Owner YOUNGWOO CHEMTECH
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