Aluminate cement material of containing mineral in Q phase

A technology of aluminate cement and cement materials, applied in the field of cement materials, can solve the problems of low firing temperature, high early strength, poor hydration activity of dicalcium aluminosilicate, etc., and achieve low firing temperature and low production cost , Highlight the effect of early hardening and quick hardening performance

Inactive Publication Date: 2005-03-30
UNIV OF JINAN
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Problems solved by technology

[0003] In order to overcome the disadvantage of poor hydration activity of dicalcium aluminosilicate, the present invention provides a new type of aluminate cement material modified by Q-phase cement, which has good hydration activity, low firing temperature and high early strength The advantages

Method used

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  • Aluminate cement material of containing mineral in Q phase
  • Aluminate cement material of containing mineral in Q phase

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Embodiment Construction

[0032] 1. the weight percent of the clinker mineral of each cement system in the Q phase aluminate cement system of the present invention, firing condition and compressive strength are:

[0033] (1) Q phase-CA-C 12 A 7 Cement system:

[0034] The weight percentage of clinker mineral is:

[0035] Q phase (C 6 A 4 MS): 40-80%

[0036] Monocalcium aluminate: 10-50%

[0037] Calcium heptaaluminate: 5-10%

[0038] The firing temperature of cement is: 1230~1300℃; the holding time is 20~60min;

[0039] The compressive strength of cement mortar: 1d is 35-50MPa,

[0040] 3d is 50~80MPa,

[0041] 28d is 70-106 MPa.

[0042] (2) Q phase-CA-C 12 A 7 -C 4 AF cement system:

[0043] The weight percentage of clinker mineral is:

[0044] Q phase (C 20 A 13 m 3 S 3 ): 40~80%

[0045] Monocalcium aluminate: 10-50%

[0046] Calcium heptaaluminate: 5-10%

[0047] Tetracalcium aluminoferrite: 5-10%

[0048] The firing temperature of cement...

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Abstract

The invention provides an aluminate cement material containing. Q phase mineral that weight percenge is 40-80. The invention cement material has advantages of excellent functin of early strength and quick hardening, low firing temp., chalk containing magnesium-silicon and low-grade bauxite can be used as raw material to produce the cement material with high aluminium and low calcium.

Description

(1) Technical field [0001] The invention belongs to the technical field of cement materials, and relates to an aluminate cement material containing Q phase (The Quaternary Phase) minerals. (2) Background technology [0002] High alumina cement system usually refers to monocalcium aluminate (CaO.Al 2 o 3 Abbreviated as CA)-calcium dialuminate (CaO.2Al 2 o 3 CA for short 2 )-dicalcium aluminosilicate (2CaO.Al 2 o 3 .SiO 2 C for short 2 AS, also known as calcium aluminum feldspar) system, in this system CA and CA 2 Both are minerals with good hydration activity, and C 2 AS is a mineral with poor hydration activity, and its content accounts for about 20% of the system composition. If this mineral can be transformed into a Q-phase mineral with good hydration activity under certain conditions, the hydration activity of cement will be significantly improved. Q phase is CaO-MgO-Al 2 o 3 -SiO 2 A thermodynamically stable phase in the quaternary system, studied by Parker....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/32C04B12/00
Inventor 姜奉华
Owner UNIV OF JINAN
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