Cementing material with strength grade of above 200MPa and preparation method thereof

A technology of cementitious materials and strength grades, which is applied in the field of building materials, can solve problems such as poor thermal stability, high cost, and poor durability, and achieve the effects of popularizing value, increasing strength, and improving concrete fluidity

Inactive Publication Date: 2013-12-18
济南鲁新新型建材股份有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] A high-strength composite cementitious material is disclosed in the existing patent. The sulphoaluminate cement and high-alumina cement used in the document are all rapid-hardening special cements, which are characterized by early strength, but have defects such

Method used

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  • Cementing material with strength grade of above 200MPa and preparation method thereof
  • Cementing material with strength grade of above 200MPa and preparation method thereof

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Embodiment Construction

[0017] A cementitious material with a strength level above 200MPa proposed by the present invention uses silicate clinker as a component raw material, mixes a certain proportion of the compounded mixture to form it, puts it into a curing box for curing, and takes out the colloidal sand for testing after 28 days. The blocks are subjected to compression tests, and the strength exceeds 210MPa.

[0018] Introduce the embodiment of the present invention below:

[0019] The ingredients (in grams) are as follows:

[0020]

[0021] The proportions of each component in the mixture of the three embodiments are as follows:

[0022]

[0023] Among the above-mentioned viscosity-reducing and plastic-preserving agents, there are 75 parts of zeolite powder and 25 parts of sodium gluconate.

[0024] Pour cement, various ingredients, and plastic sand into the plastic sand mixer one after another, stir and vibrate, and then put them in the curing box for curing. After demoulding for 24 h...

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Abstract

The invention belongs to the field of building materials and particularly relates to a cementing material with a strength grade of above 200MPa and a preparation method thereof. The technical scheme includes that the cementing material with the strength grade of above 200MPa is composed of ordinary silicate clinker serving as a raw material and an appropriate mixture prepared by superfine slag powder, metakaolin, microbeads, carbon-free rice hull ash, fine limestone powder, calcined magnesium oxide, viscosity breaking and plastic retaining agent (zeolite powder and sodium gluconate) and fibers according to a certain ratio. The compressive strength and the breaking strength of the cementing material with the strength grade of above 200MPa exceed those of ordinary silicate cementing material. If the cementing material is applied to over-C100 ultra-high strength concrete, shrinkage and viscosity of the concrete can be greatly reduced, and durability of the concrete can be improved.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a cementitious material with a strength level above 200 MPa and a preparation method thereof. Background technique [0002] Cement materials have always been a research hotspot in the building materials industry. There are many types of cement. With the rapid development of domestic and foreign projects, some projects have higher and higher requirements for cement. At present, ordinary cement has low strength and poor performance, and its application range is greatly restricted. Many projects not only require cement to be stronger and stronger, but also require super early strength and super high strength. [0003] The low strength of traditional cement is mainly due to the large pores in the cement products, which are mainly formed by the excess free water in the cement. In order to solve this problem, it is mainly achieved by adding mineral admixtures, polymers, r...

Claims

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Application Information

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IPC IPC(8): C04B28/04
Inventor 李培彦曲丽娜郭永智张玉华刘富增
Owner 济南鲁新新型建材股份有限公司
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