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Masonry mortar and preparation method thereof

A technology for masonry mortar and ceramic polishing powder, applied in the field of building materials, can solve the problems of water retention, unstable compressive strength, product quality fluctuation, fly ash and mineral powder product quality instability of masonry mortar, etc. The internal structure is dense, the water retention is improved, and the compressive strength is improved

Pending Publication Date: 2022-03-25
GUANGDONG KEZHIJIE NEW MATERIALS +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] Conventional admixtures are often used in existing masonry mortars, which are derived from by-products (mineral powder and fly ash, etc.) produced by electric fields and steel mills. The product quality of the by-product fly ash and slag has also fluctuated greatly, resulting in the product quality of fly ash and slag (fineness of fly ash and slag, content of powder vitreous body, content of fly ash carbon content, specific surface area) is unstable, the quality of fly ash and slag will affect the form effect, filling effect and pozzolanic activity of fly ash and slag, and the fly ash and slag will pass the form effect, filling effect and pozzolanic activity To improve the water retention and compressive strength of masonry mortar, therefore, due to the instability of the product quality of fly ash and mineral powder, the water retention and compressive strength of masonry mortar will be unstable.

Method used

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  • Masonry mortar and preparation method thereof
  • Masonry mortar and preparation method thereof
  • Masonry mortar and preparation method thereof

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preparation example Construction

[0055] The present invention also provides a kind of preparation method of masonry mortar, comprises steps:

[0056] In parts by weight, mix 25-35 parts of cement, 10-20 parts of modified ceramic polishing powder, 28-38 parts of sand, 1-2 parts of polycarboxylate water reducer, 1-2 parts of thickener and water , stir and dissolve, and the resulting product is masonry mortar;

[0057] The activity of the modified ceramic polishing powder is >65%.

[0058]Specifically, after adding water, the cement and the modified ceramic polishing powder undergo a hydration reaction to form a hydration product, which contains Ca(OH) 2 Solution, Ca(OH) 2 The solution soon reaches saturation and crystals are precipitated, and ettringite crystals and calcium silicate hydrate gels are formed at the same time.

[0059] In some embodiments, the preparation method of masonry mortar comprises the steps of:

[0060] S100, physically stirring the cement, modified ceramic polishing powder and sand, ...

Embodiment 1

[0094] Physically stir 32kg composite portland cement PC32.5, 15kg modified ceramic polishing powder, 6.5kg heavy calcium and 34kg machine-made sand with a fineness modulus of 2.8, and stir for 1 minute to obtain the first mixture;

[0095] Add 32kg of water to the first mixture, stir for 1min, and evenly obtain the second mixture;

[0096] Add 1.7kg polycarboxylate superplasticizer and 1.6kg thickener to the second mixture and stir for 3 minutes to react to prepare masonry mortar;

[0097] Among them, the activity of the modified ceramic polishing powder is >65%, and the specific surface area is >1023m 2 / kg, density>2.56g / cm 3 ;

[0098] The fineness modulus of sand is 2.6-3.0;

[0099] The water reducing efficiency of polycarboxylate water reducer is 36%.

Embodiment 2

[0101] 28kg composite Portland cement PC32.5, 18kg modified ceramic polishing powder, 6.8kg heavy calcium and 32kg machine-made sand with a fineness modulus of 2.6 were physically stirred for 0.5min to obtain the first mixture;

[0102] Add 34kg of water to the first mixture, stir for 1.5min, and evenly obtain the second mixture;

[0103] Add 1.6kg polycarboxylate water reducer and 1.7kg thickener to the second mixture and stir for min to react to prepare masonry mortar;

[0104] Among them, the activity of the modified ceramic polishing powder is >65%, and the specific surface area is >1023m 2 / kg, density>2.56g / cm 3 ;

[0105] The fineness modulus of sand is 2.6-3.0;

[0106] The water reducing efficiency of polycarboxylate water reducer is 36%.

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Abstract

The invention relates to masonry mortar and a preparation method thereof, and the masonry mortar is prepared from the following raw materials in parts by weight: 25-35 parts of cement; 10-20 parts of modified ceramic polishing powder; 28 to 38 parts of sand; 1-2 parts of a polycarboxylate superplasticizer; 1-2 parts of a thickening agent; water; modifying the activity gt of the ceramic polishing powder; 65%. According to the masonry mortar and the preparation method thereof provided by the invention, the modified ceramic polishing powder is used for replacing fly ash and mineral powder in the masonry mortar, so that the stability of the performance of the masonry mortar is improved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a masonry mortar and a preparation method thereof. Background technique [0002] Masonry mortar is currently the main material for building bricks, stones, blocks and other blocks into masonry. It plays the role of bonding, lining and force transmission in masonry, and is widely used in construction. Masonry mortar is mainly composed of cementitious materials and fine aggregate, and the cementitious materials are often composed of cement and admixtures. [0003] Conventional admixtures are often used in existing masonry mortars, which are derived from by-products (mineral powder and fly ash, etc.) produced by electric fields and steel mills. The product quality of the by-product fly ash and slag has also fluctuated greatly, resulting in the product quality of fly ash and slag (fineness of fly ash and slag, content of powder vitreous body, content of fly ash carbon co...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B18/16
CPCC04B28/04C04B18/16C04B2201/20C04B2201/50C04B2111/00017C04B14/28C04B14/06C04B2103/302C04B2103/44Y02W30/91
Inventor 薛博宇尹键丽姚文杰陈湧忠陈晓彬朱巧勇
Owner GUANGDONG KEZHIJIE NEW MATERIALS
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