Belite-calcium barium sulphoaluminate cement

A technology of barium calcium sulfoaluminate and calcium aluminum ferrite, which is applied in the field of cement materials, can solve the problems of reducing the corrosion resistance and durability of cement, high energy consumption, and increasing the amount, so as to reduce the amount of consumption, improve the quality of construction, and later The effect of increased intensity
CN1887766AInactive Publication Date: 2007-01-03UNIV OF JINAN
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
UNIV OF JINAN
Publication Date
2007-01-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention belongs to the field of cement material technology, and is especially one kind of Belite-calcium barium sulphoaluminate cement. The cement clinker is mainly one mineral phase system of C2S-CBAS-C3S-C3A-C4AF comprising calcium barium sulphoaluminate 5-45 wt%, dicalcium silicate 30-70 wt%, tricalcium silicate 10-45 wt%, tricalcium aluminate 2-20 wt%, and calcium aluminoferrite 2-20 wt%, where calcium barium sulphoaluminate has the molecular expression of (3-x)CaO .xBaO .3Al2O3 .CaSO4 with x=0.25-3. The present invention has the available of lower firing temperature, utilization of low quality limestone resource, high cement early strength, etc.
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Description

(1) Technical field

[0001] The invention belongs to the technical field of cement materials, in particular to a calcium barium sulfoaluminate (CBAS) mineral and belite (C 2 S) Mineral composite belite-barium calcium sulfoaluminate cement. (2) Background technology

[0002] At present, Portland cement used in large quantities has some shortcomings and deficiencies, mainly manifested in high firing temperature (1450°C), high production energy consumption; high CaO content in clinker, consuming a large amount of high-quality limestone resources; cement hydration The process produces volume shrinkage, which leads to shrinkage micro-cracks and affects the mechanical properties of concrete; a large amount of Ca(OH) is formed after cement hydration 2 , and exists in the hardened cement paste, affecting the corrosion resistance and durability of cement and concrete. Therefore, how to further reduce the firing temperature of Portland cement, save high-quality mineral resources, and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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