High-strength ground dry-mixed mortar and preparation method thereof

A dry powder mortar, high-strength technology, applied in chemical instruments and methods, filters, grids, etc., can solve the problem of high cost

Pending Publication Date: 2021-09-14
宣城市嘉恒新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current additives of dry powder mortar generally use polymers, such as dry mix powder, the strength of the ground dry powder mortar made is low, whi

Method used

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  • High-strength ground dry-mixed mortar and preparation method thereof
  • High-strength ground dry-mixed mortar and preparation method thereof
  • High-strength ground dry-mixed mortar and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] The preparation method of high-strength ground dry powder mortar, described method comprises the following steps:

[0027] Step 1: Screening the cement; specifically, the screening of the cement includes: screening the cement with a screening device;

[0028] The screening device such as Figure 1-3 As shown, it includes a lower hopper 1, and the lower hopper 1 is inserted into the inside of the screening box 4; the bottom end of the lower hopper 1 is rotatably connected with a lower material tube 3, and the lower material tube 3 adopts an inclined Structure; Specifically, a chute 11 is provided on the side of the hopper 1, and the inner slide of the chute 11 is connected to the slider 32; the slider 32 is fixed on the side of the feeding pipe 3; the The side portion of the feeding pipe 3 is fixed with a plate tooth 31, and the plate tooth 31 is connected to the rotary drive 2; the rotary drive 2 includes a motor 21, a rotating shaft 22 and a gear 23, and the plate too...

Embodiment

[0041] 1. Use the screening device to screen the cement;

[0042] 2. Weigh respectively according to the mass ratio of cement, sand and thickened powder as 23:76:1; specifically, weigh 2.3kg of cement, 7.6kg of sand, and 0.1kg of thickened powder;

[0043] 3. Mix the weighed cement, sand and thickened powder for 30 minutes to form dry powder mortar;

[0044] 4. Add 138ml of water to the above 10kg mortar and stir for 40 minutes.

[0045] Case 1: Select the above-mentioned stirred slurry and divide it into two groups. The average consistency of the two groups is detected to be 57mm, the average consistency after 2 hours is 50mm, and the consistency loss rate in two hours is 12.29%. The specific detection is shown in the following table (1) Shown:

[0046] Table (1) Dry powder mortar consistency test table

[0047]

Embodiment 2

[0048] Implement 2, get above-mentioned cement and carry out the detection of setting time, specifically as shown in table 2:

[0049] Table (2) is the test table of cement setting time

[0050]

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PUM

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Abstract

High-strength ground dry-mixed mortar comprises cement, sand and thickening powder, and the mass ratio of the cement to the sand to the thickening powder is 23: 76: 1. The invention discloses a preparation method of high-strength ground dry-mixed mortar. The method comprises the following steps: screening cement; respectively weighing the cement, the sand and the thickening powder according to the mass ratio of 23: 76: 1; and mixing and stirring the weighed cement, sand and thickening powder to form dry-mixed mortar; The dry-mixed mortar disclosed by the invention is simple in components, and the prepared dry-mixed mortar is high in strength; in addition, a screening device is comprehensive in screening, cement can be screened for multiple times, the efficiency is high, screening can be completed through one action, and convenience and rapidness are achieved.

Description

technical field [0001] The invention belongs to the technical field of dry powder mortar preparation, in particular to high-strength ground dry powder mortar and a preparation method thereof. Background technique [0002] Dry powder mortar refers to a granular or powdery physical mixture of quartz sand, cement and additives that has been dried and screened in a certain proportion. It is transported to the construction site in bags or in bulk, and then mixed with water. Cement for direct use; dry powder mortar plays the role of bonding, lining, protection and decoration in a thin layer in the construction industry, and is widely used in construction and decoration engineering. [0003] The current dry powder mortar additives generally use polymers, such as dry mix powder, and the ground dry powder mortar made of low strength cannot meet the needs. At the same time, in order to improve the strength, it is usually necessary to add other strength-enhancing formulas, which is cos...

Claims

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Application Information

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IPC IPC(8): C04B28/00B07B1/28
CPCC04B28/00B07B1/28C04B2201/50C04B14/06C04B2103/44
Inventor 吴天东
Owner 宣城市嘉恒新型建材有限公司
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