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A kind of lithium slag concrete and preparation method thereof

A technology of concrete and lithium slag, which is applied in the field of building materials, can solve the adverse effects of lithium slag concrete on the flexural performance, affect slump and workability, and be prone to bleeding and hardening, so as to improve slump and Workability, improve product environmental performance, and reduce water absorption

Active Publication Date: 2022-04-22
四川衡鼎建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that the content of components such as amorphous silica in lithium slag is relatively high, and the water absorption rate is high, which affects the slump and workability. In the preparation process of lithium slag concrete, the amount of water needs to be increased. Large water-binder ratio is prone to bleeding and hardening, which will have a certain adverse effect on the flexural performance of lithium slag concrete

Method used

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  • A kind of lithium slag concrete and preparation method thereof
  • A kind of lithium slag concrete and preparation method thereof
  • A kind of lithium slag concrete and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0038] Example 1: A method for preparing lithium slag concrete, comprising the following steps:

[0039] S1 mixture: take 0.6kg cyclohexylamine methyltriethoxysilane and 0.25kg ethyl cellulose, add 12kg ethanol, blocked and stirred for 20min, add 15kg of lithium slag powder, continue to stir for 5min, mix evenly, dry the material at 60 °C for 150min, and obtain a modified lithium slag. Weigh 269kg of gravel, add 202kg of sand, 16kg of fly ash and modified lithium slag, mix evenly to obtain powder.

[0040] S2 concrete preparation: weigh 39kg of water, stir at a speed of 150 rpm, add 2.1kg of polyvinyl alcohol fiber, 2.2kg of polycarboxylic acid superplasticizer, 0.9kg of carboxymethyl cellulose ether and 2kg of hydroxyethyl methacrylate phosphate, and then add the powder prepared by step S1, stir for 5min, then add 54kg of cement, continue to stir for 6min, and obtain lithium slag concrete.

Embodiment 2

[0042] The difference between Example 2 and Example 1 is that Example 2 does not add hydroxyethyl methacrylate phosphate, the others are consistent with Example 1.

Embodiment 3

[0044] The difference between Example 3 and Example 1 is that Example 3 is not added carboxymethyl cellulose ether, the others are consistent with Example 1.

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Abstract

The application discloses a lithium slag concrete and a preparation method thereof, and relates to the technical field of building materials. A lithium slag concrete, mainly made of concrete raw materials comprising the following parts by weight: 40-70 parts of cement, 10-20 parts of fly ash, 30-50 parts of water, 170-230 parts of sand, and 240-300 parts of gravel; The concrete raw material also includes external feed and modified lithium slag material, and the external feed includes the following raw materials in parts by weight: 1.5-3 parts of water reducing agent, 1.2-3 parts of polyvinyl alcohol fiber; the modified lithium slag material is mainly It is made from the following raw materials in parts by weight: 10-20 parts of lithium slag powder, 0.2-1 part of cyclohexylaminomethyltriethoxysilane, and 0.1-0.4 part of ethyl cellulose. It has the advantage of good bending resistance. The preparation method includes the following steps: mixing materials, concrete preparation and the like. The preparation method has the advantage of improving the bending resistance of the product.

Description

Technical field [0001] The present application relates to the technical field of building materials, in particular to a lithium slag concrete and a preparation method thereof. Background [0002] Concrete is made of cement as the main cementing material, combined with water, sand, gravel, admixtures and mineral admixtures, and uniformly mixed, densely formed and cured and hardened artificial stone. Concrete is widely used in the construction field because of its high hardness and convenient construction. Lithium slag is the waste generated in the process of lithium ore processing and production, a large amount of lithium slag produced by lithium ore brings a certain burden to the ecological environment, if the lithium slag is used in concrete production will help reduce the environmental burden and is conducive to waste recycling. [0003] CN111574139A discloses a kind of lithium slag recycled concrete, its preparation method and building components, lithium slag recycled concre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B18/08C04B14/02C04B14/06C04B16/0641C04B24/40C04B24/383C04B24/003C04B18/144C04B2103/302
Inventor 向嵘唐金涛杜红梅陈超
Owner 四川衡鼎建材有限公司
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