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Slag mixed active powder concrete

A technology of active powder and concrete, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problem of long-term durability performance cannot be guaranteed, and achieve the effect of reducing the amount of cement

Inactive Publication Date: 2008-07-09
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Technical problem: The purpose of this invention is to improve the problem that the long-term durability of domestic concrete materials cannot be guaranteed, and to provide a kind of active powder concrete mixed with slag that can comprehensively improve the durability of various structural engineering in multiple aspects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The weight ratio relative to Portland cement is:

[0031] Cement: 1 Slag: 0.5

[0032] Silica powder: 0.3 Quartz powder: 0.3

[0033] River Sand: 1.5 Water: 0.25

[0034] Steel fiber: 0.015 Water reducer: 0.025

[0035] Wherein, the content of the steel fiber refers to the ratio of the volume of the steel fiber to the volume of the material after preparation and molding.

[0036] Weigh each component as required, pour cement, river sand, slag, silica powder and quartz powder into the mixing pot, and dry mix for 1 minute. Mix the required water reducer with water, first add half of the water to the stirring pot, and stir for 3 minutes. Add the other half of the water and stir for 3 minutes. Then add half of the amount of steel fiber and stir for 3 minutes, then add the remaining half of the steel fiber and stir for 3 minutes.

[0037] The molding test mold adopts the standard cement mortar triple test mold, and the size is 40mm×40mm×160mm. After the mixture is inj...

Embodiment 2

[0039] The weight ratio relative to Portland cement is:

[0040] Cement: 1 Slag: 0.5

[0041] Silica powder: 0.3 Quartz powder: 0.3

[0042] River Sand: 1.5 Water: 0.25

[0043] Water reducer: 0.025

[0044] Weigh each component as required, pour cement, river sand, slag, silica powder and quartz powder into the mixing pot, and dry mix for 1 minute. Mix the required water reducer with water, first add half of the water to the stirring pot, and stir for 3 minutes. Add the other half of the water and stir for 3 minutes.

[0045] The molding test mold adopts the standard cement mortar triple test mold, and the size is 40mm×40mm×160mm. After the mixture is injected, vibrate on a shaking table for 180s. After the test piece is formed, put it into the curing box for curing (temperature (20? 1) ℃, humidity > 90%), and remove the mold after 24 hours. Then put them into 90°C water for thermal curing for 3 days. After the thermal curing is completed, wait for it to cool down to ...

Embodiment 3

[0047] The weight ratio relative to Portland cement is:

[0048] Cement: 1 Slag: 0.4

[0049] Silica powder: 0.3 Quartz powder: 0.3

[0050] River Sand: 1.5 Water: 0.25

[0051] Steel fiber: 0.015 Water reducer: 0.03

[0052] Wherein, the content of the steel fiber refers to the ratio of the volume of the steel fiber to the volume of the material after preparation and molding.

[0053] Weigh each component as required, pour cement, river sand, slag, silica powder and quartz powder into the mixing pot, and dry mix for 1 minute. Mix the required water reducer with water, first add half of the water to the stirring pot, and stir for 3 minutes. Add the other half of the water and stir for 3 minutes. Then add half of the amount of steel fiber and stir for 3 minutes, then add the remaining half of the steel fiber and stir for 3 minutes.

[0054]The molding test mold adopts the standard cement mortar triple test mold, and the size is 40mm×40mm×160mm. After the mixture is injec...

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Abstract

Disclosed is reactive powder concrete mixed with slag, which is a novel engineering material with super-high intensity and super-high durability, particularly cement-based composite material having super-high property prepared and formed via using all kinds of industrial residue as reactive powder. Corresponding to Portland cement, proportion by weight of all composites of the concrete is: the Portland cement holding 1 part, the slag holding 0.40-0.60 part, silicon powder holding 0.20-0.35 part, quartz flour holding 0.20-0.35 part, river sand holding 1.20-1.60 parts, water holding 0.20-0.28 part and a water reducing agent holding 0.02-0.03 part.

Description

technical field [0001] The invention is a new type of engineering material with ultra-high strength and ultra-high durability, specifically a cement-based composite material with ultra-high performance prepared by using various industrial waste residues as active powders. Background technique [0002] Cement-based materials are the most widely used building materials in modern times, and they are also the largest man-made materials at present. Compared with other common building materials (such as steel, wood, plastic, etc.), cement concrete production consumes less energy, has a wide source of raw materials, and has a simple process, so the production cost is low; it also has durability, fire resistance, strong adaptability, and convenient application. features. Therefore, for a long time to come, cement concrete will still be the most widely used and used building material. However, in the more than 170 years since the appearance of concrete, a large amount of concrete f...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B18/12C04B14/48C04B22/06
CPCC04B28/04Y02W30/91C04B14/06C04B14/068C04B14/48C04B18/141C04B2103/302
Inventor 施韬
Owner SOUTHEAST UNIV
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