Novel alkali-activated slag and fly ash cementing material retarder and preparation method

A technology of cementitious material and alkali excitation, which is applied in the fields of new 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 significant economic and social benefits, low cost, and improve the effect of brittleness

Active Publication Date: 2017-05-31
长春昌驰环保科技有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides a novel alkali-activated slag-fly ash cementing material retarder, which aims to solve the problem of flash coagulation of the alkali-activated slag-fly ash cementing material, and at the same time solve the problem of strength decline in the later stage and improve its brittleness

Method used

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  • Novel alkali-activated slag and fly ash cementing material retarder and preparation method
  • Novel alkali-activated slag and fly ash cementing material retarder and preparation method
  • Novel alkali-activated slag and fly ash cementing material retarder and preparation method

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Embodiment 1

[0027] 1. Separation and crushing of corn stalks: the stalks and leaves of corn stalks are separated and dried. In the present invention, the stalks and stalks are cut into sections and roughly crushed into lengths of 1-5 mm with a ball mill for later use.

[0028] 2. Weigh 0.95 kg of corn stalks and 0.05 kg of silica fume grinding aids and mix the corn stalks evenly, stir for 2-3 minutes, after mixing, put them into a ball mill to grind for 30 minutes, and sift through a 0.02 mm (700 mesh) sieve A new type of alkali-activated slag-fly ash cementing material retarder is prepared.

Embodiment 2

[0030] 1. Separation and crushing of corn stalks: the stalks and leaves of corn stalks are separated and dried. In the present invention, the stalks and stalks are cut into sections and roughly crushed into lengths of 1-5 mm with a ball mill for later use.

[0031] 2. Weigh 0.8kg corn stalks and 0.2kg silica fume grinding aids and mix the corn stalks evenly, stir for 2-3min, after mixing, put them in a ball mill to grind for 30min, sieving with a 0.02mm (700 mesh) sieve, Its fineness reaches below 700 meshes, and a new type of alkali-activated slag-fly ash cementing material retarder is prepared.

Embodiment 3

[0033] 1. Separation and crushing of corn stalks: the stalks and leaves of corn stalks are separated and dried. In the present invention, the stalks and stalks are cut into sections and roughly crushed into lengths of 1-5 mm with a ball mill for later use.

[0034] 2. Weigh 0.7kg corn stalks and 0.3kg silica fume grinding aids and mix the corn stalks evenly, stir for 2-3min, after mixing, put them into a ball mill to grind for 30min, sieving with a 0.02mm (700 mesh) sieve, Its fineness reaches below 700 meshes, and a new type of alkali-activated slag-fly ash cementing 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

[0001] Technical field: [0002] The invention discloses a novel alkali-activated slag-fly ash cementitious material retarder, which is an alkali-activated slag-fly ash cementitious material modifier, and also provides a preparation method thereof, and belongs to the technical field of building materials . [0003] Background technique: [0004] Alkali-activated slag-fly ash cementitious material is a geopolymer cementitious material. This material can use mineral waste as a raw material when manufacturing products. Under certain conditions, it can achieve high strength in a short time after curing. At the same time, its products It has excellent mechanical properties, acid and alkali resistance, fire resistance, and high temperature resistance. It is used in construction materials, high-strength materials, solid nuclear solid waste materials, sealing materials, and high temperature resistant materials. Nevertheless, since the setting time of the slurry of this material is too short...

Claims

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Application Information

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Patent Type & Authority Applications(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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