Method of preparing baking-free brick with dredge sediment aggregate

A technology for dredging sediment and unburned bricks, which is applied in the dredging industry and the field of building materials, can solve the problems such as patent publications that have not yet been found, and achieve the effects of simple maintenance steps, reduced production energy consumption, and reduced production costs

Active Publication Date: 2015-12-09
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004]Through the search, no patent publications related to t

Method used

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Examples

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Example Embodiment

[0038] Example 1

[0039] A method of utilizing dredged bottom mud aggregate to prepare unburned bricks, comprising the steps of:

[0040] 1. Screening of dredged sediment aggregates: the dredged sediment ceramsite is screened by a screening machine, and the ceramsite with a particle size range of 5 to 10 mm, a cylinder compressive strength of 2.75 MPa, and a water absorption rate of 10.2% is used as the dredged bottom. mud aggregate;

[0041] 2. Pretreatment of raw materials: Cement, quicklime, gypsum and fly ash are pulverized to 100 mesh and 10% moisture content by a pulverizer;

[0042] 3. Ingredients: Mix and stir the pretreated cement, quicklime, gypsum and fly ash to obtain a dry mixture, and weigh the dredged sediment aggregate. The ratio of the dry mixture to the dredged sediment aggregate is: Calculated according to the mass percentage of each raw material, cement 7%, quicklime 5%, gypsum 1.5%, fly ash 21.5%, dredging sediment aggregate 65%;

[0043] Wherein, each...

Example Embodiment

[0049] Example 2

[0050] A method of utilizing dredged bottom mud aggregate to prepare unburned bricks, comprising the steps of:

[0051] 1. Screening of dredged sediment aggregates: the dredged sediment ceramsite is screened by a screening machine, and the ceramsite with a particle size range of 4 to 9 mm, a cylinder compressive strength of 2.88 MPa and a water absorption rate of 9.8% is used as the dredged bottom. mud aggregate;

[0052] 2. Pretreatment of raw materials: Cement, quicklime, gypsum and fly ash are pulverized by a pulverizer to 150 mesh and a moisture content of 9.5%;

[0053] 3. Ingredients: Mix and stir the pretreated cement, quicklime, gypsum and fly ash to obtain a dry mixture, and weigh the dredged sediment aggregate. The ratio of the dry mixture to the dredged sediment aggregate is: According to the mass percentage of each raw material, cement 16%, quicklime 5%, gypsum 1.5%, fly ash 23.5%, dredging sediment aggregate 54%;

[0054] Wherein, each above-...

Example Embodiment

[0060] Example 3

[0061] A method of utilizing dredged bottom mud aggregate to prepare unburned bricks, comprising the steps of:

[0062] 1. Screening of dredged sediment aggregates: Use a screening machine to screen the dredged sediment ceramsite, the particle size range is 2-5mm, the cylinder compressive strength is 5.15MPa, and the water absorption rate is 9.5%. The ceramsite is used as the dredged sediment. aggregate;

[0063] 2. Pretreatment of raw materials: Cement, quicklime, gypsum and fly ash are pulverized to 200 mesh and moisture content of 9.3% by a pulverizer;

[0064] 3. Ingredients: Mix and stir the pretreated cement, quicklime, gypsum and fly ash to obtain a dry mixture, and weigh the dredged sediment aggregate. The ratio of the dry mixture to the dredged sediment aggregate is: Calculated according to the mass percentage of each raw material, cement 19%, quicklime 5%, gypsum 2.5%, fly ash 26.5%, dredging sediment aggregate 47%;

[0065] Wherein, each above-...

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Abstract

The invention relates to a method of preparing baking-free brick with a dredge sediment aggregate, which includes the steps of (1) sieving the dredge sediment aggregate; (2) smashing cement, quick lime, gypsum and fly ash in a pulverizer; (3) material blending: mixing and stirring the cement, the quick lime, the gypsum and the fly ash to obtain a dry-mixed material, weighing the dredge sediment aggregate, wherein the dry-mixed material comprises, by mass, 5-20 parts of the cement, 3-13 parts of the quick lime, 1-10 parts of the gypsum and 15-30 parts of the fly ash, and the dredge sediment aggregate accounts for 45-70 parts by weight; (4) adding water and stirring the mixture; (5) aging the mixture material; (6) press-moulding the mixture in a brick pressing machine; (7) performing product maintenance to obtain the baking-free brick. The method can consume the dredge sediment in a large quantity, thereby achieving resource recycling. The method can satisfy requirement in dredge industry and is low in production cost due to the baking-free process. The prepared baking-free brick is low in cost, is excellent in performances, can develop a utilization approach of recycling the dredge sediment resource, and satisfies the requirement of building material market.

Description

technical field [0001] The invention belongs to the technical field of dredging industry and building materials, in particular to a method for preparing non-burning bricks by using dredged bottom mud aggregate. Background technique [0002] Dredged sediment is produced by the treatment of water body sediment through dredging engineering. In recent years, due to the rapid development of my country's dredging industry, a large amount of dredged sediment is produced every year. However, due to the performance degradation of dredged sediment, its resource utilization is restricted. At present, the sintering method is mostly used in the resource utilization of dredged sediment at home and abroad. The sintering method is used to make bricks by desanding the dredged bottom mud, then aging evenly, and then directly mixing with other raw materials, and then sintering to obtain sintered bricks. Although the sintered bricks prepared by the sintering method have a dense structure and...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B18/02
Inventor 吴燕周颜贾瑞于浩
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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