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A kind of preparation and use method of normal temperature curing cheap alkali activated cement

A technology for alkali-activated cement and normal temperature curing, applied to cement building materials and their application fields, can solve problems such as high cost and no obvious advantages, and achieve the effects of reduced energy consumption and cost, reduced preparation cost, and low demand for industrial alkali.

Active Publication Date: 2021-08-10
湖南湘楚先路环保科技有限责任公司
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Problems solved by technology

But the Na in the cement 2 O+0.658K 2 The O content is 6-25%, which is not lower than that of the traditional two-component alkali-activated cement, and the alkali metals all come from expensive industrial alkali salts. Although the calcination temperature is low, the cost is still high without obvious The advantages

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  • A kind of preparation and use method of normal temperature curing cheap alkali activated cement
  • A kind of preparation and use method of normal temperature curing cheap alkali activated cement

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Embodiment Construction

[0016] The present invention is further described in detail below through specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0017] Soda ash, caustic soda, potassium and sodium aluminosilicate raw materials and calcareous raw materials are prepared, of which there are 6 kinds of potassium and sodium aluminosilicate raw materials, all of which are natural rock mixtures. In the residue after calcination at 1100 ° C, SiO 2 +Al 2 O 3 +Na 2 O+K 2 The mass proportion of O+CaO+MgO is 96~98%, and the rest of the chemical composition is mainly Fe 2 O 3 with TiO 2 . with SiO 2 +Al 2 O 3 +Na 2 O+K 2 O+CaO+MgO is 100% to calculate the chemical composition of 6 kinds of potassium and sodium aluminosilicate raw materials, see Table 1, the content of each component meets CaO: 0~5.0%, MgO: 0~2.0%, SiO 2 : 50.0~75.0%, Al 2 O 3 : 15.0~35.0%, Na 2 O+K 2 O: 5.0 to 11.0%. Mix soda ash or caustic soda with potassium and sodium alumi...

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Abstract

The invention discloses a preparation and use method of a low-cost alkali-excited cement for normal temperature curing. A small amount of industrial alkali, potassium and sodium aluminosilicate and calcium raw materials are mixed and ground, calcined at 1250-1300 DEG C and quenched to obtain clinker. After the material is ground into powder, it is evenly mixed with 3.0~10.0% sodium water glass with a modulus of 1.0~2.0 to obtain cement. When the cement is used, water is added and mixed to vibrate to form a test block. It is maintained at room temperature for 28 days and placed in saturation for the first 7 days. in moisture. The cement prepared by the method has the characteristics of wide range of raw materials, low cost, low consumption, low carbon emission, stable performance and easy control, and has broad application prospects.

Description

technical field [0001] The invention belongs to the field of cement building materials and its application, and particularly relates to a preparation method of alkali-excited cement and a use method thereof. Background technique [0002] Since the British J. Asputin obtained the patent right of Portland cement in 1824, Portland cement with huge production capacity has made great contributions to the development of human civilization in the past 200 years, but its main component - Portland cement However, there are still outstanding problems such as high carbon emission, high energy consumption and material consumption, serious dust and sulfur and nitrogen oxide gas pollution, and poor corrosion resistance and durability. Alkali-activated cement has outstanding advantages such as early strength, corrosion resistance and good freeze-thaw resistance. It can use a large amount of solid waste residues, and is low-carbon, energy-saving and environmentally friendly. It is considere...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B12/04
CPCC04B12/04
Inventor 彭美勋马洪超刘文伟肖秋国宋飞朱赞宇樊鑫锋李广周心怡矫心悦
Owner 湖南湘楚先路环保科技有限责任公司