Masonry mortar used in underwater alkaline environment

A technology for masonry mortar and alkaline environment, which is applied in the field of masonry mortar for underwater alkaline environment, can solve problems such as affecting hardening and the performance of concrete or mortar, and achieves the effect of high normal hardening, not easy to disperse, and good construction.

Active Publication Date: 2017-02-08
北京建工新型建材有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a masonry mortar for underwater alkaline environment to solve the problem that t...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The masonry mortar used in the underwater alkaline environment of this embodiment is composed of the following components by weight: 200 parts by weight of ordinary cement; 40 parts by weight of special cement; 700 parts by weight of natural medium sand; 15 parts by weight of resin rubber powder; Agent 35 parts by weight. The special cement is composed of the following components by weight: 3 parts by weight of sodium acetate; 8.5 parts by weight of fly ash; 0.8 parts by weight of sodium lignosulfonate; 55 parts by weight of Portland cement with a strength of 42.5.

[0022] The special admixture in this embodiment is composed of the following components by weight: 2 parts by weight of thickener; 1 part by weight of superplasticizer; 5 parts by weight of thixotropic agent; 12 parts by weight of coagulation regulator; 8 parts by weight of early strength agent share.

[0023] Wherein: the thickener is cellulose; the superplasticizer is sulfonated resin; the thixotropic ag...

Embodiment 2

[0028] The masonry mortar used in the underwater alkaline environment of this embodiment is composed of the following components by weight: 180 parts by weight of ordinary cement; 50 parts by weight of special cement; 705 parts by weight of natural medium sand; 18 parts by weight of resin rubber powder; 30 parts by weight of agent. The special cement is composed of the following components by weight: 6 parts by weight of sodium acetate; 5.5 parts by weight of fly ash; 0.8 parts by weight of sodium lignosulfonate; 68 parts by weight of Portland cement with a strength of 42.5.

[0029] The special admixture in this embodiment is composed of the following components by weight: 5 parts by weight of thickener; 0.5 parts by weight of superplasticizer; 8 parts by weight of thixotropic agent; 15 parts by weight of coagulation regulator; 5 parts by weight of early strength agent share.

[0030] Wherein: the thickener is synthetic resin; the superplasticizer is sodium sulfonate; the th...

Embodiment 3

[0035] The masonry mortar used in the underwater alkaline environment of this embodiment is composed of the following components by weight: 220 parts by weight of ordinary cement; 30 parts by weight of special cement; 715 parts by weight of natural medium sand; 13 parts by weight of resin rubber powder; 40 parts by weight of agent. The special cement is composed of the following components by weight: 4 parts by weight of sodium acetate; 6 parts by weight of fly ash; 0.8 parts by weight of sodium lignosulfonate; 60 parts by weight of Portland cement with a strength of 42.5.

[0036] The special admixture in this embodiment is composed of the following components by weight: 3 parts by weight of thickener; 0.6 parts by weight of superplasticizer; 6 parts by weight of thixotropic agent; 12.5 parts by weight of coagulation regulator; 6 parts by weight of early strength agent share.

[0037] Among them: the thickener is hydroxypropyl methylcellulose ether; the superplasticizer is s...

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Abstract

The invention discloses masonry mortar used in an underwater alkaline environment. The masonry mortar comprises the following components, according to a weight ratio, 180-220 parts by weight of Portland cement, 30-50 parts by weight of special cement, 705-715 parts by weight of natural medium sand, 13-18 parts by weight of resin glue powder, and 30-40 parts by weight of a special additive. The special additive is mixed from 2-5 parts by weight of a thickening agent, 0.5-1 part by weight of a super-plasticizer, 5-8 parts by weight of a thixotropic agent, 12-15 parts by weight of an adjusting admixture, and 5-8 parts by weight of an early strength agent. The masonry mortar is adjusted by high-performance additives special for underwater masonry mortar, and resin materials good in alkaline resistance are added, so that the masonry mortar is prevented from undergoing a reaction in the alkaline condition, and hardening and mortar performance aren't affected. At last, the masonry mortar is not prone to disperse, good in construction, resistant to alkaline, normal in underwater hardening, and high in strength in a working condition with water.

Description

technical field [0001] The invention relates to a masonry mortar for underwater alkaline environment. Background technique [0002] When cement mortar or concrete is in the state of water or under high disturbance, the slurry will easily segregate when it encounters water (cement is easy to lose, sand and gravel are easy to separate), and some components will participate in the reaction under alkaline conditions, thus affecting hardening and concrete. or properties of mortar. In the past, the repair of construction or damage of underwater concrete buildings was generally completed by building cofferdams, draining water, and then pouring concrete or building walls and plastering mortar. This type of project has the disadvantages of time-consuming, labor-intensive and expensive. The second method is to use chutes, conduits, pumps, open bottom containers, etc. to transport ordinary concrete or mortar to the underwater pouring or repairing position to complete. But the common...

Claims

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Application Information

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IPC IPC(8): C04B28/02C04B111/74
CPCC04B28/021C04B2111/74C04B2201/50C04B7/00C04B14/06C04B24/24C04B24/06C04B22/16C04B24/38C04B14/104C04B14/04C04B22/128C04B22/0093C04B22/062C04B24/122C04B24/383C04B24/16C04B14/106
Inventor 陈科张喜凯温晓凯张广勇周晓明
Owner 北京建工新型建材有限责任公司
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