Concrete cementing material, preparation method thereof and application thereof
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A cementitious material and concrete technology, applied in the direction of cement production, etc., can solve the problems of shortage of concrete admixture resources, increased risk of quality control, and increased cost of concrete, so as to reduce water intrusion, dense voids, and porosity rate reduction effect
Active Publication Date: 2016-09-21
山东众森新材料有限公司
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Problems solved by technology
[0003] Concrete admixture resources are increasingly scarce: resources such as mineral powder and fly ash are in short supply and their quality is unstable
Especially in areas south of the Yangtze River where there is a shortage of admixture resources, fake coal ash and slag powder emerge in endlessly, resulting in poor and unstable quality, resulting in increased concrete costs and increased quality control risks
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Embodiment 1
[0032] Embodiment 1. A concrete cementitious material is made of the following raw materials in weight percentage: 50% stone powder, 10% clinker, 20% calcined clay, 19.2% blast furnace nickel slag, 0.3% activator, 0.5% functional regulator .
[0033] The preparation method is:
[0034] (1) Grinding the active materials (calcined clay, blast furnace nickel slag, clinker) separately or mixed into ultrafine materials according to the formula ratio;
[0035] (2) Add an activator along with the material in the tube mill head, and make the particle size of the material less than 15mm after coarse grinding, and the water content in the mill is less than 4%;
[0036] (3) Enter the coarsely ground material into the ultrafine grinding system, and after the ultrafine grinding, the material reaches a particle gradation of 5-32 μm>98%, and is used as a cementitious material masterbatch;
[0037] (4) Mix the stone powder and the cementitious material masterbatch in step (3) uniformly in a...
Embodiment 2
[0038] Embodiment 2. A concrete cementitious material, made of the following raw materials in weight percentage: 70% stone powder, 15% clinker, 14.4% calcined kaolin, 0.3% activator, 0.3% function regulator.
[0039] The preparation method is the same as in Example 1.
Embodiment 3
[0040] Embodiment 3. A concrete cementitious material, made of the following raw materials in weight percentage: 20% stone powder, 20% clinker, 19.4% calcined coal gangue, 40% smelting waste residue, 0.2% activator, 0.4% functional regulator .
[0041] The smelting waste slag is a mixture of blast furnace slag, blast furnace nickel slag and electric furnace nickel slag in equal proportions.
[0042] The preparation method is the same as in Example 1.
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Abstract
The invention provides a concrete cementing material, a preparation method thereof and an application thereof. The material can replace or partially replace the raw materials of the concrete, such as fly ashes, mineral powders, cement and the like, and then the concrete excellent in production performance can be produced. According to the technical scheme of the invention, the concrete cementing material comprises the following raw materials by weight percentage: 20-70% of stone flours, 0-20% of clinker, 5-50% of volcanic gray matters and artificial volcanic gray matters, 0-40% of smelting waste, 0.05-0.3% of activator, and 0.3-0.5% of function regulator. The prepared concrete cementing material can be used for pumping the normal concrete, the self-leveling concrete and the concrete of components. In a cementing material system for preparing the concrete, the cementing material can replace mineral powder, fly ashes and one part of the cement in the formula of the concrete according to the designed proportion the total amount of the cementing material in the concrete.
Description
technical field [0001] The invention belongs to the field of building materials, and relates to a concrete cementitious material, a preparation method and an application thereof. Background technique [0002] In 2015, the national concrete industry was in the most sluggish period in the market for more than ten years. The industry's growth rate was at a new low, and the growth rate fell to a historical low; Losses have expanded; industry revenue has reached a new low; and corporate accounts receivable have reached a new high. This is a problem faced by the national concrete industry under the situation of serious overcapacity in the industry and economic downturn. Under the situation that the current capacity utilization rate is generally less than 30%, the brutal competition in the future market will continue. [0003] Concrete admixture resources are increasingly scarce: the supply of resources such as mineral powder and fly ash is tight and the quality is unstable. Espe...
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