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A kind of alkali-activated slag-fly ash cementitious material retarder and preparation method

A technology for cementitious material and fly ash, which is applied in the fields of alkali-excited slag-fly ash cementitious material retarder, alkali-excited slag-fly ash cementitious material modifier, and can solve the problem of alkali-excited slag-fly ash cementitious material. Coal ash cementitious material flash setting and other problems, to achieve the effect of significant economic and social benefits, simple production process and cheap resources

Active Publication Date: 2019-01-18
长春昌驰环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an alkali-activated slag-fly ash cementing material retarder, which aims at solving the flash coagulation problem of the alkali-activated slag-fly ash cementing material, and at the same time solving the problem of strength decline in the later stage and improving its brittleness

Method used

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  • A kind of alkali-activated slag-fly ash cementitious material retarder and preparation method
  • A kind of alkali-activated slag-fly ash cementitious material retarder and preparation method
  • A kind of alkali-activated slag-fly ash cementitious material retarder and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0022] 1. Separation and crushing of corn stalks: the stems and leaves of the corn stalks are separated and dried, and the stalks of the corn stalks are cut into segments and roughly crushed into lengths of 1-5 mm by a ball mill for use.

[0023] 2. Weigh 0.95 kg of corn stalks and 0.05 kg of silica fume grinding aid and mix them with corn stalks evenly, stir for 2-3 minutes, after mixing, put them into a ball mill for grinding for 30 minutes, and sieve them with a 0.02 mm (700 mesh) sieve, that is An alkali-activated slag-fly ash cementitious material retarder is prepared.

Embodiment 2

[0025] 1. Separation and crushing of corn stalks: the stems and leaves of the corn stalks are separated and dried, and the stalks of the corn stalks are cut into segments and roughly crushed into lengths of 1-5 mm by a ball mill for use.

[0026] 2. Weigh 0.8kg of corn stalks and 0.2kg of silica fume grinding aid and mix them with corn stalks evenly, stir for 2-3 minutes, after mixing, put them into a ball mill for grinding for 30 minutes, and sieve them with a 0.02 mm (700 mesh) sieve to make the When the fineness reaches below 700 mesh, an alkali-activated slag-fly ash cementitious material retarder is prepared.

Embodiment 3

[0028] 1. Separation and crushing of corn stalks: the stems and leaves of the corn stalks are separated and dried, and the stalks of the corn stalks are cut into segments and roughly crushed into lengths of 1-5 mm by a ball mill for use.

[0029] 2. Weigh 0.7kg of corn stalks and 0.3kg of silica fume grinding aid and mix them with corn stalks evenly, stir for 2-3 minutes, after mixing, put them into a ball mill for grinding for 30 minutes, and sieve them with a 0.02 mm (700 mesh) sieve to make the When the fineness reaches below 700 mesh, an alkali-activated slag-fly ash cementitious material retarder is prepared.

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Abstract

The invention discloses a novel alkali-activated slag and fly ash cementing material retarder and a preparation method. The method comprises the steps that a straw stem and a leaf are separated and dried; the straw stem is cut into sections and roughly crushed into 1-5mm length by a ball mill; the straw stem is uniformly mixed with silicon ash; milling is performed for 10-60min in the ball mill to form 400-1000-mesh powder to obtain the retarder. The novel alkali-activated slag and fly ash cementing material retarder is prepared by taking a straw as a main raw material; a corn straw is abundant in resource and low in price; a commonly used retarder which is high in price, complicated in production technology and non-environment-friendly is replaced; a retardation effect is obvious; in addition, the straw can exert an effect of a fiber, and improves the brittleness of the retarder. The method provides a new approach for comprehensive utilization of the straw, is simple in production technology, low in cost, green and environment-friendly, and has very significant economic and social benefits.

Description

Technical field: [0001] The invention discloses an alkali-excited slag-fly ash cementitious material retarder, which is an alkali-excited slag-fly ash cementitious material modifier, and also provides a preparation method thereof, belonging to the technical field of building materials. Background technique: [0002] Alkali-activated slag-fly ash cementitious material is a geopolymer cementitious material, which can use mineral waste as raw material when manufacturing products, and can achieve high strength in a short period of time under certain conditions. It has excellent mechanical properties and acid and alkali resistance, fire resistance and high temperature resistance, and is used in building materials, high-strength materials, solid-core solid waste materials, sealing materials, and high-temperature resistant materials. Even so, because the slurry setting time of this material is too short to meet the national standards, it is not conducive to the molding operation of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B18/24C04B103/22
CPCC04B40/0039C04B2103/22C04B18/146C04B18/248Y02W30/91
Inventor 肖力光李静瑶李晶辉
Owner 长春昌驰环保科技有限公司
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