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Freeze-thaw resisting cement and its production process

A production method and anti-freeze-thaw technology, applied in the field of anti-freeze-thaw cement and its production, can solve the problems of the anti-freeze-thaw technology, building erosion and peeling, unsatisfactory effect, etc., and achieve self-leveling and uniformity. Good properties, fast setting and hardening, good plasticity

Inactive Publication Date: 2006-08-02
CAOYUAN CEMENT XIZHUOZISHAN NEI MONGOL AUTONOMOUS REGION
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Problems solved by technology

The building materials used in power plant cooling towers and water conservancy project construction have not been able to solve the freeze-thaw resistance technology well.
Domestic power plants, water conservancy projects, and bridge constructions mostly use high-strength cement, but the effect is not ideal. After 3-5 years of use, the buildings will be corroded and peeled off, and the maintenance will be large. Developed countries do not have special power plant cooling towers and water conservancy project building materials.

Method used

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  • Freeze-thaw resisting cement and its production process

Examples

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Embodiment Construction

[0032] The present invention is described in detail in conjunction with the trial burning production of our company:

[0033] This example is carried out under the conditions of general cement production equipment. Except for the technological measures described below, the processes not mentioned are carried out according to the ordinary cement production process, and this example will not repeat them.

[0034] Selection of raw materials and fuels:

[0035] Limey raw material: stable quality, high quality, less impurity, CaO content greater than 50%.

[0036] Clay material: high freeze-thaw resistance cement to C 3 The content of A is more stringent, and the alkali content of clay raw materials is required (K 2 O+Na 2 O) less than 1.0%.

[0037] Ferrous raw materials, high-iron raw materials are required, Fe 2 o 3 The content is between 55.0%-62.0%. In the production of special cement with high freeze-thaw resistance, the most important thing is to control the Al in the...

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Abstract

The present invention discloses one kind of freeze-thaw resisting cement and its production process. The material consists of clinker 90-92 wt%, limestone 4.5-6 wt%, and gypsum 4.2-5.0 wt%, and the clinker has KHú¢0.90+ / -0.02, nú¢1.80+ / -0.10 and pú¢0.90+ / -0.10. It has the mineral composition of: C3Sú“54.0 wt%, C2Sú¥20.0 wt%, C3Aú“6.0 wt%, C4AFú¥14.0 wt%, and f-CaO less than 1.5 wt%. The freeze-thaw resisting cement has specific surface area over 350 sq m / Kg and fineness below 2.5 %, and after 250 times of freeze-thaw, it has 3-day breaking strength over 5.0 Mpa and compression strength over 25.0 Mpa, and 28-day breaking strength over 7.0 Mpa and compression strength over 50.0 Mpa. It has low C3A content, good freeze-thaw resisting performance, fast curing, high wear resistance and high permeation resistance.

Description

Technical field: [0001] The invention relates to a cement and a production method thereof, in particular to a freeze-thaw resistant cement and a production method thereof. Background technique: [0002] With the implementation of the western development strategy, the "South-to-North Water Diversion", "West-to-East Gas Transmission", "West-to-East Electricity Transmission" and other engineering projects, the construction of domestic electric power and water conservancy projects has greatly increased, and the demand for high-performance freeze-thaw-resistant cement The amount increases accordingly. The building materials used in power plant cooling towers and water conservancy project construction have not been able to solve the freeze-thaw resistance technology well. Domestic power plants, water conservancy projects, and bridge constructions mostly use high-strength cement, but the effect is not ideal. After 3-5 years of use, the buildings will be corroded and peeled off, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/00C04B7/36
Inventor 祁文明介武军赵洪坚岳二思宋福至李军郭俊李永飞
Owner CAOYUAN CEMENT XIZHUOZISHAN NEI MONGOL AUTONOMOUS REGION
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