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High-bending-strength supersulfate cement and preparation method thereof

A technology of ultra-sulfate cement with high flexural resistance, applied in cement production, sustainable waste treatment, solid waste management, etc., can solve problems such as low early strength, slow cement hydration and hardening, and easy sanding, and achieve improved Early strength and late strength, the effect of solving easy sanding, excellent impermeability and durability

Active Publication Date: 2018-03-23
TANGSHAN POLAR BEAR BUILDING MATERIAL
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Problems solved by technology

[0006] The first purpose of the present invention is to provide a high flexural super sulfate cement to solve the slow hydration hardening speed and low early strength of cement caused by the inability of the activator in the prior art to fully stimulate the activity of granulated blast furnace slag and the problem of easy sanding

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  • High-bending-strength supersulfate cement and preparation method thereof
  • High-bending-strength supersulfate cement and preparation method thereof
  • High-bending-strength supersulfate cement and preparation method thereof

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preparation example Construction

[0063] A second aspect of the present invention provides a method for preparing the above-mentioned granulated blast furnace slag activator, comprising the steps of: mixing granulated blast furnace slag, gypsum and high belite sulfoaluminate cement clinker and optionally mineral The excitation component is ground together with the optional coagulation-accelerating-strengthening component to obtain the high flexural super sulfate cement;

[0064] Alternatively, the gypsum and high belite sulphoaluminate cement clinker and optionally mineral stimulating components are co-ground with optional setting and strengthening components, and then with ground granulated blast furnace slag Mix to get.

[0065] As a preferred embodiment of the present invention, the preparation method of the above-mentioned granulated blast furnace slag activator comprises the following steps: combining granulated blast furnace slag, gypsum and high belite sulphoaluminate cement clinker and optionally miner...

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Abstract

The invention provides high-bending-strength supersulfate cement and a preparation method thereof and relates to the field of building materials. The high-bending-strength supersulfate cement comprises granulated blast-furnace slag, gypsum and high-belite sulfate aluminum cement clinker. By utilizing the high-bending-strength supersulfate cement, the problem that existing supersulfate cement is low in hydration and hardening speed and early strength and prone to sand shedding caused by the fact that excitants cannot fully excite granulation blast-furnace slag activity in the prior art is solved, and bending strength of the cement is improved greatly; the high-bending-strength supersulfate cement has the advantages of high early-later strength and is ultrahigh in bending strength especially.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a high-bending super sulfate cement and a preparation method thereof. Background technique [0002] Supersulphated cement (Supersulphated Cement) is a kind of little clinker or no clinker cement with granulated blast furnace slag as the main raw material, gypsum as the sulfate activator and silicate clinker or lime as the alkaline activator. . Super sulfate cement has good performance characteristics such as low heat of hydration, strong impermeability, and resistance to sulfate erosion, and its production process is simple, low in cost, and low in energy consumption. From the 1940s to the 1960s, super sulfate cement was widely used in Britain, Germany, France, Italy, Belgium, the Netherlands and Luxembourg. However, after the 1970s, with the development of the ironmaking process, the chemical composition of granulated blast furnace slag has changed, resulting in poo...

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Application Information

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IPC IPC(8): C04B7/32
CPCC04B7/323C04B7/153C04B7/17C04B7/21C04B28/08C04B28/14Y02W30/91Y02P40/10C04B7/3453C04B22/143C04B18/141
Inventor 陈智丰张振秋周健
Owner TANGSHAN POLAR BEAR BUILDING MATERIAL
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