Super cementitious material based on wet grinding and preparation method and application thereof

A technology of cementitious materials and wet grinding process, which is applied in the field of cementitious materials, can solve the problems of low effective utilization rate and high energy consumption of cement, and achieve the effect of improving early strength, high hydration degree and high activity

Active Publication Date: 2019-10-08
WUHAN UNIV OF TECH
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Problems solved by technology

[0005] In view of this, the present invention aims to propose a super cementitious material based on wet grinding process to solve the problems of high energy consumption and low effective utilization rate of existing cement

Method used

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  • Super cementitious material based on wet grinding and preparation method and application thereof
  • Super cementitious material based on wet grinding and preparation method and application thereof

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Embodiment Construction

[0023] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0024] The present invention will be described in detail below in conjunction with examples.

[0025] Table 1 is the proportion of each component in the supergelled material based on the wet milling process of Examples 1 to 5 of the present invention and the fineness and wet milling parameters of the supergelled material based on the wet milled process in each embodiment, Wherein, the cement in the supercementitious material based on the wet grinding process of embodiments 1 to 5 is P.O 42.5 grade, and the median particle size of the cement is 15.1 μm; the stabilizer is a temperature wheel with a mass concentration of 0.1%. glue.

[0026] Table 1

[0027]

[0028] Table 2 shows the ratio of each component in the surface modifier in Examples 1 to 5 of the present invention. Wherein, the consumption of p...

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Abstract

The invention provides a super cementitious material based on wet grinding and a preparation method and application thereof. The super cementitious material based on wet grinding is made from, by mass, 28-60% of cement, 1-3% of a surfactant, 0.1-0.2% of a stabilizer and 37-70% of water through wet grinding. The super cementitious material based on wet grinding is mainly made from ordinary Portlandcement; the surfactant and the stabilizer are added during wet grinding, so that the super cementitious material having medium particle size of 2-5 mu m is acquired. As the whole system is in prehydrated state after wet grinding and the particle size is small, the super cementitious material herein has higher hydration degree and very high activity than raw cement; after the cement is partially replaced, early strength can be improved evidently. Grading can be optimized, and later strength can be improved to certain degree, wherein 12-hour strength increase ratio is up to 142%.

Description

technical field [0001] The invention relates to the technical field of gelling materials, in particular to a super-gelling material based on a wet grinding process and its preparation method and application. Background technique [0002] Concrete generally requires good construction performance. If no water reducing agent is added, the water ash is relatively large, which is generally greater than the water required for complete hydration of cement. However, with the hydration of cement and the continuous evaporation of free water, the concrete will There are still some unhydrated cement particles. If high-efficiency water reducer is added, the water-cement ratio of concrete will be greatly reduced, the degree of hydration of cement will be reduced, and the hydration will be even more insufficient. At present, the fineness of ordinary cement in my country is generally relatively large, and its specific surface area is more than 300m 2 / kg or so, the 28d hydration degree is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/52C04B24/32C04B103/52
CPCC04B7/52C04B40/0039C04B2103/52C04B24/04C04B24/32C04B24/16C04B22/14
Inventor 谭洪波张迅邓秀峰李懋高聂康峻贺行洋苏英
Owner WUHAN UNIV OF TECH
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