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Phosphor slag power concrete mortar

A technology of cement mortar and phosphorus slag powder, which is applied in the field of construction cement mortar, can solve the problems of limited utilization and achieve the effects of reducing environmental pollution, significant technical and economic significance, and reducing water pollution

Inactive Publication Date: 2008-09-24
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the significant effect of phosphorus slag retarding and retarding strength, its utilization is still limited so far. Therefore, large-scale and effective use of phosphorus slag resources can reduce environmental pollution, give full play to the role of phosphorus slag and reduce the amount of retarder and cement. Reducing the cost of mortar production is a problem that needs to be further solved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: The proportioning of cementitious material is 50% cement and 50% phosphorus slag powder, the sodium sulfate of 1% and the desulfurization gypsum activator of 2% of cementitious material are mixed externally, and water reducing agent is cementitious material 0.25 % of wood calcium, the amount of sand is taken according to the lime-sand ratio of 1:3, and water with a consistency of 90-100mm is added, measured and stirred. The degree of delamination of the mortar was measured to be 11mm, the compressive strength of the mortar was 28.75Mpa in 28 days, and the setting time was 860min.

Embodiment 2

[0022] Embodiment 2: The proportioning of cementitious material is 20% cement and 80% phosphorus slag powder, the sodium sulfate of 1% and the desulfurization gypsum activator of 2% of cementitious material are mixed externally, and water reducer is cementitious material 0.25 % wood calcium, the amount of sand is taken according to the lime-sand ratio of 1:3, and water with a consistency of 90-100mm is added, measured and stirred. The delamination degree of the mortar was measured to be 5mm, the 28-day compressive strength was 21.08Mpa, and the setting time was 1210min.

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Abstract

The present invention discloses phosphorous ground slag cement mortar, and comprises ordinary silicate cement, phosphorous ground slag, sand and water. On the one hand, the phosphorous ground slag used in the present invention is used as mixed material to substitute the cement in equal weight to be mixed into the pre-mixing commodity mortar, thus reducing the consumption volume of the cement; on the other hand, the retardation property of the phosphorous slag is used to obviously prolong the condensation time, thereby overcoming the weakness that the retardation agent must be added into the traditional pre-mixing commodity mortar, and can realize the effect similar to the adding of the retardation agent. Therefore, the present invention makes full use of the effect of the phosphorous to improve the workability of the mortar, thereby greatly reducing the production cost, and reducing the environmental pollution.

Description

technical field [0001] The invention relates to a building cement mortar, in particular to a building cement mortar mixed with phosphorus slag powder. Background technique [0002] Ready-mixed commercial mortar refers to a kind of finished mortar that is transported to the construction site by means of transportation (usually closed tank trucks) after various raw materials (including water) are rationally prepared and factory-operated; it is characterized by large production batches, stable quality, and comprehensive The cost is reduced, but in order to ensure the normal construction time, it is necessary to add a special mortar retarder to ensure that the mortar can be stored for a long time in a closed container, and to ensure that the mortar and the base material are firmly bonded and can harden rapidly in the atmosphere. Due to the addition of the retarder, the cost of the mortar is greatly increased. [0003] Phosphorus slag is an industrial waste slag with calcium sil...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B22/16C04B14/06
CPCC04B28/04C04B2111/00017Y02W30/91C04B14/06C04B18/145C04B2103/302
Inventor 刘秀伟曹建新陈前林杨林
Owner GUIZHOU UNIV
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