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A kind of preparation method of organic-inorganic material composite modified cement

A technology of inorganic materials and composite modification, which is applied in the technical improvement of setting time and setting speed, and the preparation of organic-inorganic materials composite modified cement, which can solve problems such as not easy to condense, long construction time, and increased construction costs. Achieve the effects of short setting time, rapid cement setting and good strength requirements

Active Publication Date: 2016-05-25
东北大学秦皇岛分校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the development of the national economy, China's construction field is showing a trend of vigorous development, and the corresponding building materials are developing rapidly. However, when building tunnels or submarine projects, there are still problems. Ordinary cement cannot withstand the erosion of water and is not easy to condense. , not only increases the construction cost, but also requires a longer construction time, so our modified water retaining agent can be applied in these fields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1) Mix PC32.5R general-purpose cement and tap water at a mass-to-number ratio of 1:1, stir evenly, and mix into mud;

[0019] 2) Mix bentonite: water at a mass ratio of 0.45:1, add 6% water glass of cement mass, bentonite, water, water glass and caustic soda accounting for 1% of cement mass, stir and mix to form soil water;

[0020] 3) Mix the mud in step 1): the mass ratio of soil and water is 1.8:1, and stir evenly;

[0021] 4) Add polyacrylamide PAM anionic liquid accounting for 4wt% of the cement mass to step 3), and stir under normal pressure to form a uniform slurry. The flocculation time is 35h, and a hard block is formed, and the strength can be greater than 42.5MPa.

Embodiment 2

[0023] 1) Mix PC32.5R general-purpose cement and tap water at a ratio of 1.5:1 by mass and number, stir evenly, and mix into mud;

[0024] 2) Mix bentonite: water at a mass ratio of 0.55:1, add 8% of the cement mass water glass and bentonite, water, water glass and 1.5% of the cement mass caustic soda, stir and mix to form soil water;

[0025] 3) Mix the mud in step 1): the mass ratio of soil and water is 2:1, and stir evenly;

[0026] 4) Add polyacrylamide PAM anionic viscous liquid to step 3), the viscous liquid is about 3.5wt% of cement, stir the slurry evenly under normal pressure, the flocculation time is 30h, and form a hard block, the strength can be greater than 42.5MPa.

Embodiment 3

[0028] 1) Mix PC32.5R general-purpose cement and tap water according to the mass-to-number ratio of 1.3:1, stir evenly, and mix into mud;

[0029] 2) Mix bentonite: water at a mass ratio of 0.6:1, add 8% water glass of cement mass and 1.8% caustic soda of bentonite, water, water glass and cement mass, stir and mix to form soil water;

[0030] 3) Mix the mud in step 1): the mass ratio of soil and water is 2.2:1, and stir evenly;

[0031] 4) Add polyacrylamide PAM anionic liquid to step 3), which is about 4.8wt% of the cement mass, stir the slurry evenly under normal pressure, the flocculation time is 35h, and form a hard block, the strength can be greater than 42.5MPa.

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Abstract

The invention belongs to a preparation method of organic-inorganic material composite modified cement, belonging to the technical field of building material preparation. The cement is elaborately prepared from common materials by using an organic-inorganic composite technology, and uniformly stirring and mixing. The cement has special structure and property characteristics; and the prepared organic-inorganic material composite modified cement which is short in settling time and high in strength is prepared. The cement prepared by using the technology is short in flocculation time and good in strength, can be quickly cemented, meets relatively good strength requirements, and can be widely applied to building fields such as channel construction and underwater construction.

Description

technical field [0001] The invention belongs to the technical field of building material preparation, and in particular relates to a method for preparing organic-inorganic material composite modified cement, in particular to the technical improvement of the setting time and setting speed of the organic-inorganic material composite cement. Background technique [0002] Cement is a kind of inorganic non-metallic material, is a kind of widely used construction material, cement, in 1756, British engineer J. Smeaton discovered when studying the characteristic of some lime hardening in water, for the development and development of modern cement The development lays the theoretical foundation. In 1796, the British J. Parker fired a kind of cement with marl, which was brown in appearance and had good hydraulic and rapid setting properties, especially suitable for projects in contact with water. French civil engineering technician Picasy discovered that the cement performance made b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04
Inventor 王海旺李玥倪冬冬邢艺飞
Owner 东北大学秦皇岛分校