Cement mortar and preparation method thereof

A technology of cement mortar and ordinary Portland cement, applied in the field of building materials, can solve the problems of not paying attention to the stability of mortar, and achieve the effects of improving stability and water retention performance, low degree of separation, and improving strength

Active Publication Date: 2021-06-25
GUANGDONG HUI YUN TITANIUM IND CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By realizing the adjustment and modification of the added components, the invention realizes the optimization of the overall formula of the mortar, eliminates the pore defects in the mortar forming process, prolongs the effective time of cement hydration, eliminates the internal thermal stress in time, and improves the model's resistance to dimensional shrinkage and resistance. cracking ability, but still no attention to the stability of the mortar

Method used

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  • Cement mortar and preparation method thereof

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Effect test

preparation example Construction

[0046] Basic Example A kind of preparation method of titanium gypsum

[0047] Include the following steps:

[0048] (1) Collect titanium dioxide acidic wastewater and transfer it to the adjustment tank to mix evenly, transfer the uniformly mixed titanium dioxide acidic wastewater and crystal seeds to the primary neutralization tank and add calcium carbonate for primary neutralization, and adjust the pH to 3- 4. Obtain a primary neutralizing solution;

[0049] (2) the first-level neutralization solution obtained in step (1) is transferred to the second-level neutralization pool, and calcium hydroxide is added to carry out the second-level neutralization, and the pH adjustment is 7-9 to obtain the second-level neutralization solution;

[0050] (3) transfer the secondary neutralization solution obtained in the step (2) into the aeration tank to add polyacrylamide, and fill it with compressed air to obtain mixture A;

[0051] (4) The mixture A is transferred to the thickening ta...

Embodiment 1

[0053] Embodiment 1 A kind of cement mortar

[0054] It includes the following components by weight: 10% ordinary Portland cement, 10% fly ash, 40% quartz sand, 5% calcium lignosulfonate, alkyl trimethyl quaternary ammonium alkyl trimethyl 1% quaternary ammonium salt, 4% bentonite, 4% titanium gypsum and the balance water.

[0055] Described fly ash is:

[0056] 30-50μm 10%;

[0057] 60-100μm 90%;

[0058] Described titanium gypsum is prepared by the method of basic embodiment, and in titanium gypsum, CaSO 4 2H 2 The content of O is 80.6%.

[0059] The preparation method comprises the following steps:

[0060] S1, calcium lignosulfonate, alkyl trimethyl quaternary ammonium salt, bentonite, titanium gypsum and 20% of the formula amount of water are mixed, stirred evenly, to obtain the mixture M;

[0061] S2. Add ordinary Portland cement, fly ash, quartz sand and the remaining amount of water to the mixture M obtained in step S1 and stir evenly to obtain the cement mortar...

Embodiment 2

[0062] Embodiment 2 A kind of cement mortar

[0063] The following components are included in parts by weight: ordinary portland cement 20%, fly ash 15%, quartz sand 60%, sodium lignosulfonate 5%, alkyl trimethyl quaternary ammonium salt alkyl trimethyl 2.5% of quaternary ammonium salt, 7.5% of bentonite, 8% of titanium gypsum and the balance of water.

[0064] Described fly ash is:

[0065] 30-50μm 30%;

[0066] 60-100μm 70%;

[0067] Described titanium gypsum is prepared by the method of basic embodiment, and in titanium gypsum, CaSO 4 2H 2 The content of O is 84.8%.

[0068] The preparation method comprises the following steps:

[0069] S1, mixing sodium lignosulfonate, alkyl trimethyl quaternary ammonium salt, bentonite, titanium gypsum and 20% of the formula amount of water, stirring evenly, to obtain the mixture M;

[0070] S2. Add ordinary Portland cement, fly ash, quartz sand and the remaining amount of water to the mixture M obtained in step S1 and stir evenly ...

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Abstract

The invention provides cement mortar and a preparation method thereof, and relates to the technical field of building materials. The cement mortar comprises the following components in percentage by weight: 10-20% of ordinary Portland cement, 10-15% of fly ash, 40-60% of quartz sand, 5-10% of a water reducing agent, 5-15% of a thickening agent, 4-8% of a retarder and the balance of water. The titanium gypsum is adopted as the retarder, on one hand, the resource utilization of the titanium gypsum is improved; and on the other hand, the titanium gypsum prepared through the preparation method of the titanium gypsum is good in retarding effect, by controlling the mass ratio of the retarder to the thickening agent, the stability and the water retention capacity of the cement mortar are obviously improved, and the mortar material separation degree is low; and the mortar has better size shrinkage resistance and cracking resistance.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a cement mortar and a preparation method thereof. Background technique [0002] In recent years, my country's building energy-saving and wall material reforms have been continuously promoted and deepened, and the gypsum industry has developed rapidly. With the depletion of high-quality natural gypsum resources, and the national conditions such as environmental protection and the development of green industries, gypsum raw materials have undergone tremendous changes. , from natural gypsum to industrial by-product gypsum. Therefore, the comprehensive utilization of industrial by-product gypsum has become the focus of the gypsum industry. my country's industrial by-product gypsum mainly includes desulfurization gypsum, phosphogypsum, titanium gypsum, waste pottery mold gypsum, Glauber's salt gypsum, fluorine gypsum, salt gypsum, lemon gypsum, etc. There are many ways to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B22/14C04B24/12C04B18/08C04B103/22C04B103/44C04B20/00C04B111/20
CPCC04B18/08C04B22/146C04B28/04C04B40/0039C04B2103/22C04B2103/44C04B2111/20C04B2201/50C04B14/06C04B24/18C04B24/12C04B22/00C04B20/008Y02W30/91
Inventor 赵平何明川黄建文陈湘涛李缉勇梁成友
Owner GUANGDONG HUI YUN TITANIUM IND CORP LTD
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