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Dry-mixed mortar prepared from hot furnace slag and preparation method of dry-mixed mortar

A technology of submerged thermal slag and dry-mixed mortar, which is applied in the field of building materials, can solve problems such as no research report on dry-mixed mortar, and achieve the effects of improving comprehensive utilization rate, reducing production cost and low cost.

Active Publication Date: 2014-03-12
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, there is no relevant research report on the use of submerged arc furnace slag as admixture and aggregate to prepare dry-mixed mortar in China.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) The dry-mixed mortar is composed of inorganic cementitious material, medium sand, submerged heat slag sand and admixture, and the mass parts of inorganic cementitious material, medium sand, submerged heat slag sand and admixture are 380 parts and 560 parts respectively , 840 parts and 4 parts; the inorganic cementitious material is batched according to mass percentage; the mass percentage of the inorganic cementitious material is: cement 65%, submerged arc furnace slag micropowder 25%, blast furnace slag micropowder 5% and limestone micropowder 5%; admixture for cellulose.

[0022] (2) Dry the submerged arc slag until the water content is less than 1%, and then screen the submerged arc slag to obtain submerged arc slag sand with a particle size of 0.6~2.36mm; Grinding to a specific surface area of ​​445 m 2 / kg ore slag fine powder; dry the blast furnace slag and limestone until the moisture content is less than 1%, and grind them separately until the specific surf...

Embodiment 2

[0029] (1) The dry-mixed mortar is composed of inorganic cementitious material, medium sand, submerged heat slag sand and admixture, and the mass parts of cementitious material, medium sand, submerged heat slag sand and admixture are 300 parts, 840 parts, 560 parts and 3 parts; the inorganic cementitious material is proportioned according to mass percentage; the inorganic cementitious material is proportioned according to mass percentage; the mass percentage of inorganic cementitious material is: cement 60%, ore-heated slag micropowder 25%, blast furnace slag micropowder 10% and limestone powder 5%; the admixture is cellulose.

[0030] (2) Dry the submerged arc slag until the moisture content is less than 1%, and then screen the submerged arc slag to obtain submerged arc slag sand with a particle size of 0.6~2.36mm; The slag is ground to a specific surface area of ​​445 m 2 / kg ore slag micropowder; dry the blast furnace slag and limestone until the water content is less than...

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Abstract

The invention discloses dry-mixed mortar prepared from hot furnace slag and a preparation method of the dry-mixed mortar. The dry-mixed mortar comprises the following components in parts by mass: 200-750 parts of an inorganic cementitious material, 280-900 parts of medium sand, 500-1220 parts of hot furnace slag sand and 2-7.5 parts of an additive, wherein the inorganic cementitious material comprises the following components in percentage by mass: 50-65% of cement, 25-30% of hot furnace slag power, 5-10% of blast furnace slag fine powder and 5-10% of limestone fine powder; the additive is cellulose; the hot furnace slag is nickel ore smelting slag; after the hot furnace slag is sieved, the hot furnace slag with the particle sizes of 0.6-2.36 mm is the hot furnace slag sand. All the components are measured according to the formula, and then mixed and stirred to obtain the dry-mixed mortar. According to the preparation method, the process is simple; dry-mixed mortar with the grade of M5-M30 can be prepared; the rate of multipurpose utilization of the hot furnace slag can be remarkably increased; environmental pollution is reduced; social and economic benefits are obvious.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a submerged heat slag dry-mixed mortar and a preparation method thereof. Background technique [0002] Dry-mixed mortar is also known as pre-mixed (dry) mortar, dry powder material, dry mix, dry powder mortar or dry-mixed mortar. It is composed of cementitious materials, mineral admixtures, fine aggregates, admixtures, etc. Depending on the application, the semi-finished mortar without mixing water is made by mixing uniformly in professional mixing equipment through different formula ratios. The mixing water is added when mixing at the construction site before use. [0003] As a new type of green building material, dry-mixed mortar has the advantages of saving resources, protecting the environment, and ensuring the quality of construction projects. It overcomes the shortcomings of traditional mortar on-site mixing, dust, noise, and construction quality. It ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B18/12
CPCY02W30/91
Inventor 陈平邹小平刘荣进韦家崭赵艳荣向玮衡姜晗
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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