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High-efficiency corrosion resistant pre-mixed mortar

A ready-mixed mortar and corrosion-resistant technology, which is applied in the field of ready-mixed mortar materials for construction, can solve problems such as pollution, short setting time, serious problems, etc., achieve uniform microstructure, improve corrosion resistance, and small particle size

Inactive Publication Date: 2017-05-31
中山市群发建筑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the limitation of site conditions, traditional mortar is generally weighed and mixed on site, and it is all manually operated, and the production method is relatively backward.
Its performance is difficult to meet the requirements; especially in recent years, with the extensive application of concrete blocks and various wall panels, as well as the improvement of the requirements for crack resistance and anti-seepage of external walls, higher requirements are put forward for mortar, so that traditional mortar cannot Meet the requirements of actual engineering, the quality stability of traditional mortar is poor
Due to inaccurate material measurement and other reasons, the strength of mortar is generally low, and the overall strength is highly discrete, which is not conducive to ensuring the improvement of the entire project quality; traditional mortar has water retention, short setting time, poor workability, and is not easy to operate; large material waste, The pollution is serious, and the on-site configuration of mortar requires a large area of ​​fine aggregate storage yard, lime paste sedimentation tank, cement storage, etc., which not only occupies the construction site, but also is not conducive to civilized construction, and will cause a lot of dust and noise on the construction site Pollution, therefore, ready-mixed mortar has become another trend in the development of the concrete industry
[0005] At present, there are already many methods for producing ready-mixed mortar in the concrete production industry. The main materials used are: according to a certain proportion, medium sand, fine sand, etc. are used as aggregates, and cement, water reducing agent, expansion agent, engineering Modification of ready-mixed mortar by fiber etc., for example, Chinese patent CN 102731039 A discloses a kind of ready-mixed mortar and its preparation method, the method is to mix various materials according to the following weight ratio to make ready-mixed mortar: cement 20-35%, medium and fine sand 60-79%, cellulose ether polymer 0.05-0.3%, engineering fiber 0.1-2.0%, expansion agent 0.1-4.0% and water reducer 0.1-1.0%, the method It is to solve the problem of drying and shrinkage of the existing mortar itself, but the invention does not disclose the preparation method of anti-corrosion concrete
Chinese patent CN 102093006 A discloses a fly ash dry-mixed mortar, which is made by mixing the following ingredients in the weight ratio: 25-30 parts of fly ash; 0-5 parts of cement; 65-75 parts of aggregate 0.15-0.3 parts of composite activator; 0.03-0.05 parts of water-retaining agent; low characteristics, and there is no disclosure of a corrosion-resistant concrete preparation method

Method used

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  • High-efficiency corrosion resistant pre-mixed mortar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Take 20% of river sand with a particle size of 0.20mm, 30% of machine-made sand with a particle size of 1mm, 10% of fly ash with a particle size of 0.5mm-1mm, 10% of granulated blast furnace slag powder, 1 % of polycarboxylic acid, 1% of sodium gluconate, 10% of cement, 8% of redispersible latex powder, 5% of kaolin with an average particle size of 0.5-1 μm, and 5% of electrolytic manganese slag waste are stirred and mixed, Add water, after the mixing material is completely soaked and a little water overflows, put the mixed mortar concrete into a specimen mold with a size of 30cm×15cm×15cm for molding, and produce 3 specimens in total, and the 3 specimens are respectively Curing at room temperature in humidity for 1d, measuring compressive strength, impermeability strength and shrinkage rate after standard curing in water for 28d, immersing 3 specimens respectively after standard curing in water for 28d: tap water, 5% Na 2 SO 4 Solution, 5% NaOH, curing for 15 weeks, t...

Embodiment 2

[0026] Take 10% of river sand with a particle size of 0.40mm, 20% of machine-made sand with a particle size of 2.5mm, 15% of fly ash with a particle size of 0.5mm-1mm, 15% of granulated blast furnace slag powder, Stir and mix 1.5% polycarboxylic acid, 1.5% sodium gluconate, 15% cement, 5% redispersible latex powder, 7% kaolin with an average particle size of 0.5-1μm, and 10% electrolytic manganese slag waste , add water, after the mixing material is completely soaked and a little water overflows, put the mixed mortar concrete into a test piece mold with a size of 30cm×15cm×15cm to form, and produce 3 test pieces and 3 test pieces Respectively in the humidity for 1d at room temperature, after 28 days of standard water curing, measure the compressive strength, impermeability strength, shrinkage rate, after 28 days of standard water curing, immerse the three test pieces respectively: tap water, 5% Na 2 SO 4 Solution, 5% NaOH, curing for 15 weeks, test its expansion rate.

Embodiment 3

[0028] Take 5% of river sand with a particle size of 0.30mm, 15% of machine-made sand with a particle size of 1.5mm, 20% of fly ash with a particle size of 0.5mm-1mm, 20% of granulated blast furnace slag powder, Stir and mix 2% polycarboxylic acid, 2% sodium gluconate, 5% cement, 15% redispersible latex powder, 10% kaolin with an average particle size of 0.5-1μm, and 6% electrolytic manganese slag waste , add water, after the mixing material is completely soaked and a little water overflows, put the mixed mortar concrete into a test piece mold with a size of 30cm×15cm×15cm to form, and produce 3 test pieces and 3 test pieces Respectively in the humidity for 1d at room temperature, after 28 days of standard water curing, measure the compressive strength, impermeability strength, shrinkage rate, after 28 days of standard water curing, immerse the three test pieces respectively: tap water, 5% Na 2 SO 4 Solution, 5% NaOH, curing for 15 weeks, test its expansion rate.

[0029] Co...

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Abstract

The invention relates to a pre-mixed mortar material for buildings and particularly relates to high-efficiency corrosion resistant pre-mixed mortar. The mortar is prepared by mixing the following ingredients in percentages by weight: 5-20% of river sand, 10-30% of manufactured sand, 10-20% of flyash, 10-20% of granulated blast-furnace slag powder, 1-2% of polycarboxylic acid, 1-2% of sodium gluconate, 5-15% of cement, 5-15% of redispersible powder, 5-10% of kaolin and 5-10% of an electrolytic manganese slag waste. By using the pre-mixed mortar prepared at the ratio, the prepared concrete has the characteristics of being hard, corrosion-resistant and low in cost, and has wide applicability.

Description

[0001] 【Technical field】 [0002] The invention relates to a ready-mixed mortar material for construction, in particular to a high-efficiency corrosion-resistant ready-mixed mortar. [0003] 【Background technique】 [0004] Due to the limitation of on-site conditions, traditional mortar is generally weighed and mixed on-site, and it is all manually operated, and the production method is relatively backward. Its performance is difficult to meet the requirements; especially in recent years, with the extensive application of concrete blocks and various wall panels, as well as the improvement of the requirements for crack resistance and anti-seepage of external walls, higher requirements are put forward for mortar, so that traditional mortar cannot It meets the requirements of actual engineering, and the quality stability of traditional mortar is poor. Due to inaccurate material measurement and other reasons, the strength of mortar is generally low, and the overall strength is high...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B111/20
CPCC04B28/00C04B2111/20C04B2201/50C04B14/068C04B14/06C04B18/08C04B18/141C04B24/24C04B24/10C04B2103/0057C04B14/106C04B18/0481C04B22/002
Inventor 黄玲玲
Owner 中山市群发建筑材料有限公司
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