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Machine-made sand regulator for concrete, concrete and preparation method thereof

A sand conditioner and concrete technology, applied in the field of building materials, can solve the problem of inability to use machine-made sand, and achieve the effects of improving 2h expansion, excellent performance, and improving 2h slump

Active Publication Date: 2020-10-30
广州砼奇杰建材科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The embodiments of the present disclosure provide a machine-made sand conditioner for concrete, concrete and a preparation method thereof, to solve the problem that machine-made sand cannot be used to completely replace natural sand as concrete fine aggregate due to stone powder contained in machine-made sand

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  • Machine-made sand regulator for concrete, concrete and preparation method thereof

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preparation example Construction

[0055] In some embodiments, the preparation method of the admixture includes: ball milling the zeolite powder for 30 minutes to 1 hour, then adding pumice powder, and ball milling for 1 to 2 hours; finally adding fly ash, and ball milling for 30 minutes to 45 minutes. Get the admixture. Ensure that the pores of pumice powder can be filled with zeolite powder, increase the specific gravity of pumice powder, improve its dispersibility in concrete, fully contact and react with cement, and improve concrete performance.

[0056] In some embodiments, the weight ratio of admixture to cementitious material is 0.5-0.8:1. Reduce cement consumption.

[0057] Optionally, the weight ratio of admixture to gelling material is 0.65:1.

[0058] In the embodiments of the present disclosure, the proportion of each component in the concrete may be based on the existing conventional concrete proportion, or may be specifically formulated according to the actual situation, and is not limited.

[...

Embodiment 1

[0064] The machine-made sand conditioner, in parts by weight, includes: 40 parts of polycarboxylic acid mother liquor, 20 parts of diethanol monoisopropanolamine, 2 parts of triisopropanolamine, 20 parts of glycerin and 2 parts of sodium sulfate; 916 parts of water.

[0065] In the machine-made sand conditioner of the present embodiment 1, by weight percentage, include: polycarboxylate mother liquor 4%, diethanol monoisopropanolamine 2%, triisopropanolamine 0.2%, glycerin 2% and sodium sulfate 0.2% .

Embodiment 2

[0067] Concrete I, by weight, includes: 180 parts of cementitious material, 850 parts of coarse aggregate, 1050 parts of fine aggregate, 6.5 parts of water reducing agent, 2.5 parts of machine-made sand conditioner, 120 parts of admixture and 160 parts of water.

[0068] Wherein, the machine-made sand conditioner adopts the machine-made sand conditioner of Example 1. The cementitious material is cement. Coarse aggregate is 1 to 3 stones. The water reducing agent adopts polycarboxylate water reducing agent. The fine aggregate is machine-made sand, and the content of stone powder with a particle size of less than 75 μm in the machine-made sand is 20% to 25%.

[0069] Admixtures include fly ash (particle size is not limited), pumice powder (particle size is 1 ~ 5μm) and zeolite powder (particle size is 10 ~ 200nm); wherein, the weight ratio of fly ash to pumice powder is 1: 0.6; the weight ratio of fly ash to zeolite powder is 1:0.6. It is prepared by the following method: ba...

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Abstract

The invention relates to the technical field of building materials, and discloses a machine-made sand regulator for concrete, which comprises polycarboxylic acid mother liquor, diethanolisopropanolamine, triisopropanolamine, glycerol and sodium sulfate. Water is used as a solvent. The machine-made sand regulator disclosed by the embodiment of the invention has rich hydroxyl, is weakly alkaline, does not contain chloride ions, is non-toxic and non-corrosive, and is a high-performance green and environment-friendly material. The components are simple, and the excellent performance is achieved byregulating and controlling the reasonable ratio of the components. By using the machine-made sand regulator as an admixture of concrete, all sand in the concrete can adopt machine-made sand. No wasteliquid is generated, no cleaning is needed after stirring, no production wastewater is generated, and no waste gas is generated. The invention further discloses concrete and a preparation method thereof.

Description

technical field [0001] The present application relates to the technical field of building materials, for example, to a machine-made sand conditioner for concrete, concrete and a preparation method thereof. Background technique [0002] Concrete, referred to as "concrete": refers to the general designation of engineering composite materials that use cementitious materials to cement aggregates into a whole. The term concrete usually refers to the use of cement as cementitious material and sand and stone as aggregates; It is mixed with water (may contain admixtures and admixtures) in a certain proportion, and the cement concrete obtained by stirring is also called ordinary concrete, which is widely used in civil engineering. Therefore, sand is the main material of concrete composition. [0003] At present, as the amount of sand used in the construction market is increasing, natural sand resources are becoming less and less, so machine-made sand appears. Manufactured sand is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/24C04B28/00C04B20/02C04B14/02
CPCC04B40/0039C04B20/023C04B28/00C04B24/24C04B24/122C04B24/02C04B22/147C04B22/002C04B14/02C04B18/08C04B14/16C04B14/047C04B2103/302
Inventor 陈志杰杨文俊刘衍行黄沛文
Owner 广州砼奇杰建材科技有限公司
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