a gamma-c 2 s activation modification method

A modification and compound technology, applied in the field of activation modification of γ-C2S, can solve the problem of low product strength, and achieve the effect of increasing specific surface area, increasing carbonization degree, and increasing compactness and strength

Active Publication Date: 2021-08-06
山东汉博昱洲新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention aims to propose a γ-C 2 The activation modification method of S to solve the existing γ-C 2 The problem of low strength of S products

Method used

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  • a gamma-c <sub>2</sub> s activation modification method
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  • a gamma-c <sub>2</sub> s activation modification method

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Experimental program
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Effect test

Embodiment 1

[0027] a gamma-C 2 The activation modification method of S comprises the following steps:

[0028] 1) Put 296g of calcium hydroxide and 120g of silicon dioxide into a ball milling tank and mix them, then add 3mol.% barium hydroxide, and ball mill and mix them for 2 hours at a ball milling speed of 200rpm to obtain raw materials for firing;

[0029] 2) Take out the calcined raw materials and add 10% alcohol to mix them, press them into tablets, and bake them at 60°C for 24 hours to fully dry them. Raise the temperature to 1400°C and keep it warm for 3 hours, then cool down to room temperature naturally with the furnace to obtain metal ion-doped γ-C 2 S.

[0030] The γ-C doped with the metal ions of this embodiment 2 S is carbonized and cured to obtain γ-C 2 S carbonized products, according to GB / T50081-2002 "Standard for Test Methods of Mechanical Properties of Ordinary Concrete" for γ-C 2 The mechanical properties of S carbonized products are tested, and the test results ...

Embodiment 2

[0033] a gamma-C 2 The activation modification method of S comprises the following steps:

[0034] 1) Put 296g of calcium hydroxide and 120g of silicon dioxide into a ball milling tank and mix them, then add 2mol.% barium hydroxide, and ball mill and mix them for 2 hours at a ball milling speed of 200rpm to obtain raw materials for firing;

[0035] 2) Take out the calcined raw materials and add 10% alcohol to mix them, press them into tablets, and bake them at 60°C for 24 hours to fully dry them. Raise the temperature to 1400°C and keep it warm for 3 hours, then cool down to room temperature naturally with the furnace to obtain metal ion-doped γ-C 2 S.

[0036] The γ-C doped with the metal ions of this embodiment 2 S is carbonized and cured to obtain γ-C 2 S carbonized products, according to GB / T50081-2002 "Standard for Test Methods of Mechanical Properties of Ordinary Concrete" for γ-C 2 The mechanical properties of S carbonized products are tested, and the test results ...

Embodiment 3

[0039] a gamma-C 2 The activation modification method of S comprises the following steps:

[0040] 1) Put 296g of calcium hydroxide and 120g of silicon dioxide into a ball milling tank and mix them, then add 1mol.% barium hydroxide, and ball mill and mix them for 2 hours at a ball milling rate of 200rpm to obtain raw materials for firing;

[0041] 2) Take out the calcined raw materials and add 10% alcohol to mix them, press them into tablets, and bake them at 60°C for 24 hours to fully dry them. Raise the temperature to 1400°C and keep it warm for 3 hours, then cool down to room temperature naturally with the furnace to obtain metal ion-doped γ-C 2 S.

[0042] The γ-C doped with the metal ions of this embodiment 2 S is carbonized and cured to obtain γ-C 2 S carbonized products, according to GB / T50081-2002 "Standard for Test Methods of Mechanical Properties of Ordinary Concrete" for γ-C 2 The mechanical properties of S carbonized products are tested, and the test results a...

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Abstract

The present invention provides a γ-C 2 The activation modification method of S, the activation modification method, comprises the following steps: 1) according to the calcium-silicon molar ratio of 2:1, mixes the calcium raw material and the silicon raw material, then, adds the metal ion compound, mixes by ball milling, and obtains sintering raw materials; 2) mixing the sintering raw materials with 10% alcohol, pressing them into green bodies, drying, sintering, and natural cooling to obtain metal ion-doped γ-C 2 S. The present invention adopts metal ion doping firing pair γ-C 2 S was modified to prepare γ‑C with high specific surface area and high carbonization activity 2 S, and after being doped with metal ions and fired, the metal ions are enriched at the grain boundaries and replace part of the calcium ions to form a continuous solid solution. The carbonized products prepared by the activated γ-C2S have a higher degree of carbonization and resistance to carbonization. compressive strength.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a γ-C 2 S activation modification method. Background technique [0002] With the continuous aggravation of global warming, the massive emission of carbon dioxide has aroused widespread concern around the world. As a major carbon emitter, the building materials industry is making every effort to develop in the direction of energy conservation and emission reduction. Among them, carbonized and hardened calcium silicate products are produced. The research shows that most of the calcium silicate minerals in cement have a high carbonation reaction, of which γ-C 2 Calcium silicate minerals with extremely low hydration activity such as S have high carbonization activity and can react with carbon dioxide rapidly in the presence of water, and its products can obtain higher strength in a short time. [0003] As a new structural material, carbonation hardened γ-C 2 There are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/42C04B7/44C04B7/24
CPCC04B7/243C04B7/424C04B7/44Y02P40/10
Inventor 王发洲刘志超赵思雪穆元冬何永佳
Owner 山东汉博昱洲新材料有限公司
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