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A kind of aluminate phosphate cement modified sulfoaluminate cement clinker

A technology of sulphoaluminate cement and aluminophosphate cement, which is applied in the field of sulphoaluminate cement clinker modified by aluminophosphate cement, can solve problems such as implementation difficulties, and achieve good seawater erosion resistance

Active Publication Date: 2020-08-25
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But due to the presence of C 4 A 3 S and C 4 AF hard with C 3 The problem of S coexistence is more difficult to implement in practice

Method used

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  • A kind of aluminate phosphate cement modified sulfoaluminate cement clinker
  • A kind of aluminate phosphate cement modified sulfoaluminate cement clinker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A kind of aluminum phosphate cement modified sulfoaluminate cement clinker, its raw material component mass percent is CaO42.2%, Al 2 o 3 33.7%, P 2 o 5 11.4%, SO 3 4.8%, Fe 2 o 3 7.9%, mixed according to the design ratio, and the firing temperature was set at 1370°C. The setting time and mechanical properties of the prepared cement clinker are shown in Table 1.

Embodiment 2

[0015] A kind of aluminum phosphate cement modified sulfoaluminate cement clinker, its raw material component mass percent is Ca 45.4%, Al 2 o 3 31.8%, P 2 o 5 10.0%, SO 3 4.7%, Fe 2 o 3 8.1%, mixed according to the design ratio, and the firing temperature was set at 1370°C. The setting time and mechanical properties of the prepared cement clinker are shown in Table 1.

Embodiment 3

[0017] A kind of aluminum phosphate cement modified sulfoaluminate cement clinker, its raw material component mass percent is CaO45.8%, Al 2 o 3 31.5%, P 2 o 5 9.9%, SO 3 4.5%, Fe 2 o 3 8.3%, mixed according to the design ratio, and the firing temperature was set at 1370°C. The setting time and mechanical properties of the prepared cement clinker are shown in Table 1.

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Abstract

The invention discloses phosphoaluminate cement modified sulfoaluminate cement clinker. The raw materials comprise the following chemical components: 40 to 50 percent of CaO, 26 to 40 percent of Al2O3, 6.5 to 12.5 percent of P2O5, 4 to 5 percent of SO3 and 5 to 10 percent of Fe2O3. Compared with the traditional sulfoaluminate cement, the phosphoaluminate cement modified sulfoaluminate cement clinker has the following advantages: the early strength is higher, the medium and later strength is improved better and the grinding property of the clinker is higher. Phosphorus calcium aluminate and calcium phosphate replace part of C2S, so that coexistence with C4A3S is realized; meanwhile, the formula comprises a large amount of iron phase and the iron phase and SO3 in the raw materials achieve the effect of a mineralizing agent, so that the appearing temperature of liquid phase and the viscosity of the liquid phase are reduced and low-temperature sintering of high-temperature ore phase phosphorus calcium aluminate is facilitated. The C4AF is hydrated to form iron glue, so that the phosphoaluminate cement modified sulfoaluminate cement clinker has high seawater scouring resistance and erosion resistance and is suitable for the field of marine engineering construction.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a modified sulphoaluminate cement clinker of aluminophosphate cement. Background technique [0002] The marine environment is complex and changeable, and the environment of marine engineering buildings is much harsher than that of land buildings. They not only have to face typhoons, waves, tides, ice collisions, extrusion, temperature, earthquakes and other physical factors. , but also subject to SO 4 2- , Cl - , Mg 2+ Representative of chemical corrosion brought about by aggressive ions. Therefore, in addition to meeting the strength and work performance required by ordinary engineering, cement for marine engineering should also have certain properties such as impermeability, frost resistance, corrosion resistance, erosion resistance and impact resistance. With the implementation of various marine development plans, a large number of coastal and offshore projec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B12/02
CPCC04B12/02
Inventor 王守德李树森张文龙程新芦令超
Owner UNIV OF JINAN
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