CN103964712A

CN103964712A - Ultra-fine powder cement admixture and manufacturing method thereof

Info

Publication number: CN103964712A
Application number: CN201310025285.XA
Authority: CN
Inventors: 王诗友
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-01-24
Filing date: 2013-01-24
Publication date: 2014-08-06

Abstract

The invention relates to an ultra-fine powder cement admixture and a manufacturing method thereof. In the ultra-fine powder cement admixture, 700-to-900-mesh cement accounts for 65 to 75% and has an average particle size of 5.4 mu m; 1100-to-1200-mesh ore powder accounts for 20 to 30% and has an average particle size of 4.5 mu m; a 700-to-900-mesh expanding agent accounts for 2% and has an average particle size of 5.4 mu m; and fly ash accounts for 3% and has an average particle size of 4.5 mu m; and the particle sizes of the above-mentioned materials are controlled by using wind power. The ultra-fine powder cement admixture provided by the invention has the advantages of good workability, high durability, low hydration heat and good thermal stability and is more than 5 times finer than materials of a same kind.

Description

A kind of ultra-fine micropowder cement admixture and preparation method thereof

Technical field

The present invention relates to a kind of ultra-fine micropowder cement admixture and preparation method thereof.

Background technology

The cement using in construction work in prior art, it is generally ordinary Portland cement, during construction, to add therein sand, water and admixture to be made into concrete, again concrete mixture is packed into die for molding, maintenance, then form removal, in order to create conditions, make the abundant aquation of cement, accelerate its sclerosis, its intensity is constantly increased and prevent concrete formation after because being exposed to the sun, the disrepair phenomenon such as the undesired contraction that occurs of the condition such as wind, cold, crack, must carry out maintenance to the concrete after form removal.And because size ratio is higher, the concrete making is attractive in appearance not.

Summary of the invention

Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, a kind of ultra-fine micropowder cement admixture is provided, it is characterized in that comprising 700-900 object cement, 1000-1200 object breeze, 700-900 object swelling agent and flyash, wherein said cement accounts for 65%-75%; Described breeze accounts for 20%-30%, and described swelling agent accounts for 2%, and described flyash accounts for 3%.

Wherein said cement preference is 800 object cement, and described breeze is preferably 1100 object breezes, and described swelling agent is preferably 800 object swelling agents.Described cement proportion is preferably 70%, and described breeze proportion is preferably 25%.Described breeze carefully obtains by grain slag grinding, and described swelling agent is to be a kind of additive of water for expanding that add, and real mediation gets up to reach non-shrinking effect.The median size of described cement is 5.4, and the median size of described breeze is 4.5, and the median size of described swelling agent is 5.4, and the median size of described flyash is 4.5.

The making method of described ultra-fine micropowder cement admixture comprises following steps,

(1) 700-900 object cement is carried out to ball milling;

(2) in the cement after ball milling, mix 1000-1200 object breeze, 700-900 object swelling agent and flyash obtain described ultra-fine micropowder cement admixture;

(3) carry out air classification, utilize the size of wind-force to control the granularity of described ultra-fine micropowder cement admixture;

(4) described ultra-fine micropowder cement admixture product is tested and packed.

Described ultra-fine micropowder cement admixture has the following advantages:

(1) good workability: fresh concrete slump is high, water-retentivity, plasticity-is good, bleeding is few.

(2) good endurance: resisting erosion of sulfate, anti-micro, anti-villaumite dialysis, anti-marine denudation, anti-carbonization, alkali resistant aggregate reaction.

(3) hydration heat is low: it is slow that aquation is analysed thermal velocity, is conducive to the crack that prevents that internal temperature rise of mass concrete from causing, can be used for configuring high performance concrete.

(4) intensity is high: significantly improve concrete later strength, wear resistance is good, strong with reinforcing bar bonding force, can be used for preparing high performance concrete.

(5) Heat stability is good: the thermostability that can improve oil well cement and high temperature steam curing Portland cement.

(6) environmental performance is excellent: place of cement, save energy, reduces Carbon emission greatly.

(7) concrete attractive in appearance: can significantly improve cement concrete appearance color, make concrete appearance color even consistent.

(8) ultra-fine: thinner more than 5 times than same type of material.

Can be widely used in all kinds of engineerings such as bridge, tunnel, harbour, extra large work, underground, oil well, colliery, water conservancy, jet pouring slurry, rubber and plastic and material.

Accompanying drawing explanation

Fig. 1: the process flow sheet of ultra-fine micropowder cement admixture of the present invention.

Embodiment

Ultra-fine micropowder cement admixture of the present invention, is characterized in that comprising 700-900 object cement, 1000-1200 object breeze, and 700-900 object swelling agent and flyash, wherein said cement accounts for 65%-75%; Described breeze accounts for 20%-30%, and described swelling agent accounts for 2%, and described flyash accounts for 3%.

As shown in Figure 1, the making method of described ultra-fine micropowder cement admixture comprises following steps,

(1) 700-900 object cement is carried out to ball milling;

In preferred embodiment, adopt 800 object cement to account for 70%, median size 5.4um, 1100 object breezes account for 25%, median size 4.5um, 800 swelling agent accounts for 2%, median size 5.4um, flyash accounts for 3%, and the ultra-fine micropowder cement admixture that median size 4.5um hybrid process makes, through checking: try 20 ℃+2 ℃ of body formed test room temperatures, relative humidity > 50%, 20 ℃ of maintenance water temperatures, upper and lower temperature difference is between 1 ℃, 20 ℃ of maintaining box water temperatures, upper and lower temperature difference is between 1 ℃, under the envrionment conditions of relative humidity > 90%, sample state meets GB/T1346-2011 < < cement normal consistency water consumption completely, time of coagulation, the standard regulation of stability method of inspection > > and GBT17671-1999 < < Test method for strength of hydraulic cement mortar (I S0) method > >, actual measurement standard consistency reaches 49%, and thinner more than 5 times than same type of material, can be widely used in bridge, tunnel, harbour, sea work, underground, oil well, colliery, water conservancy, jet pouring slurry, in all kinds of engineerings such as rubber and plastic and material.

Embodiment recited above is described the preferred embodiment of the present invention; not the spirit and scope of the present invention are limited; do not departing under the prerequisite of design concept of the present invention; various modification and improvement that in this area, common engineering technical personnel make technical scheme of the present invention; all should fall into protection scope of the present invention; the technology contents that the present invention asks for protection, is all documented in claims.

Claims

1. a ultra-fine micropowder cement admixture, is characterized in that comprising 700-900 object cement, 1000-1200 object breeze, and 700-900 object swelling agent and flyash, wherein said cement accounts for 65%-75%; Described breeze accounts for 20%-30%, and described swelling agent accounts for 2%, and described flyash accounts for 3%.

2. ultra-fine micropowder cement admixture as claimed in claim 1, wherein said cement preference is 800 object cement, and described breeze is preferably 1100 object breezes, and described swelling agent is preferably 800 object swelling agents.

3. ultra-fine micropowder cement admixture as claimed in claim 1, wherein said cement proportion is preferably 70%, and described breeze proportion is preferably 25%.

4. the ultra-fine micropowder cement admixture as described in claim as arbitrary in claims 1 to 3, the median size of wherein said cement is 5.4 μ m, the median size of described breeze is 4.5 μ m, and the median size of described swelling agent is 5.4 μ m, and the median size of described flyash is 4.5 μ m.

5. a making method for ultra-fine micropowder cement admixture, is characterized in that comprising following steps,

(1) 700-900 object cement is carried out to ball milling;

6. ultra-fine micropowder cement admixture as claimed in claim 5, wherein said cement preference is 800 object cement, and described breeze is preferably 1100 object breezes, and described swelling agent is preferably 800 object swelling agents.

7. ultra-fine micropowder cement admixture as claimed in claim 5, wherein said cement proportion is preferably 70%, and described breeze proportion is preferably 25%.

8. the ultra-fine micropowder cement admixture as described in claim as arbitrary in claim 5 to 7, the median size of wherein said cement is 5.4 μ m, the median size of described breeze is 4.5 μ m, and the median size of described swelling agent is 5.4 μ m, and the median size of described flyash is 4.5 μ m.