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Hydraulic gelate material and method for preparing same

A technology of hydraulic gelling and raw materials, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve problems such as difficult to meet the requirements of cement use, cement strength decline, etc., to achieve low cost and low energy consumption Less and easy to use

Inactive Publication Date: 2009-01-07
WUHAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the amount of limestone in cement increases to a certain extent, the strength of cement drops sharply, and it is difficult to meet the requirements of cement use.

Method used

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  • Hydraulic gelate material and method for preparing same
  • Hydraulic gelate material and method for preparing same
  • Hydraulic gelate material and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Mix limestone, industrial waste residue, gypsum and additives according to the ratio in Table 1, and grind until the specific surface area is greater than 280m 2 / kg, the hydraulic gelling material is obtained. The industrial waste slag is blast furnace slag, and the admixture is Portland cement clinker mainly composed of calcium silicate, calcium aluminate and calcium aluminoferrite (ie the clinker in Table 1). Then according to the national standard of GB / T 3183-2003 masonry cement, the results are shown in Table 1. It can be seen that each proportion meets the technical requirements of GB / T 3183-2003 masonry cement.

[0023] Table 1. Proportion and properties of hydraulic cementitious materials

[0024]

[0025]

[0026] Note: The limestone used in Table 1 is based on calcium carbonate (CaCO 3 ) as the main component of natural ore, and the gypsum used is natural dihydrate gypsum.

Embodiment 2

[0028] According to the mass percentage of each raw material: limestone 55%, industrial waste residue 30%, gypsum 5%, admixture 10%, choose limestone, industrial waste residue, gypsum and admixture raw materials, standby; used limestone is calcium carbonate (CaCO 3 ) as the main component of natural ore, the gypsum used is natural dihydrate gypsum, the industrial waste slag is blast furnace slag, and the admixture is Portland cement cooked with calcium silicate, calcium aluminate and calcium aluminate iron as the main components. material (ie the clinker in Table 2).

[0029] First mix and grind limestone, clinker and gypsum until the specific surface area is 375m 2 / kg. Separately grind the blast furnace slag to a specific surface area of ​​363m 2 / kg. Then, the mixed powder obtained by grinding the three materials of limestone, clinker and gypsum is evenly mixed with blast furnace slag powder to make a hydraulic cementitious material. According to the national standard o...

Embodiment 3

[0033] Mix various materials according to the ratio in Table 3, and grind until the specific surface area is greater than 280m 2 After / kg, get the hydraulic cementitious material, then check by the national standard of GB / T 3183-2003 masonry cement, the result is as shown in table 4, it can be seen that each proportioning all meets GB / T 3183-2003 masonry cement technical requirements.

[0034] Table 3. Proportioning of hydraulic gelling material, mass percentage (%)

[0035]

serial number

lime

stone

blast furnace

Slag

steel

slag

pink

coal

Ash

coal

Gangster

stone

dihydrate

plaster

hard

stone

ointment

half water

plaster

Phosphorite

ointment

lime

Hydroxy

Calcium ...

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Abstract

The invention belongs to the field of a constructional material, in particular relates to a hydraulic binding material and a preparation method thereof. The hydraulic binding material is characterized in that the hydraulic binding material is prepared with 35 percent to 75 percent of limestone by mass, 5 percent to 50 percent of industrial residue by mass, 0 percent to 10 percent of plaster by mass and 0 percent to 20 percent of additives by mass through mixing. The mass percents of the plaster and the additives are not 0 at the same time, and the total of the mass percents of the raw materials is 100%. The hydraulic binding material and the preparation method can make use of much limestone; the preparation method is simple in process; the cost is low; little energy is consumed; and the hydraulic binding material is environment-friendly.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a hydraulic gelling material and a preparation method thereof. Background technique [0002] At present, the amount of cement used in construction mortar accounts for 25% to 35% of the total amount of cement used in construction projects. Usually, 32.5 strength grade cement is used to prepare construction mortar. In order to ensure the workability of mortar, the amount of cement used is often relatively large, which usually results in Waste is not conducive to energy saving and cost reduction. [0003] Limestone is the main raw material for cement production. Usually, limestone, clay, and iron powder are mixed and ground into raw material, calcined into cement clinker, and then mixed into admixture and ground into cement. Limestone calcination not only consumes a lot of energy, but also releases a lot of carbon dioxide gas. [0004] Compared with slag and fly ash, ...

Claims

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Application Information

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IPC IPC(8): C04B7/34
CPCC04B2111/00017C04B28/16Y02W30/91C04B7/02C04B14/28C04B18/08C04B18/141C04B18/142C04B22/064C04B22/143C04B22/145C04B2103/0094C04B18/12
Inventor 林宗寿赵前黄赟刘金军欧小弟
Owner WUHAN UNIV OF TECH
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