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Method for production of additives enhancing water tightness of building materials

A building material and watertight technology, applied in chemical instruments and methods, cement mixing devices, mixers with rotating stirring devices, etc., can solve the problems of increasing the specific gravity of the product, large particle size of the product, and long drying time

Active Publication Date: 2017-04-19
费伦茨托洛斯克 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The amount of water added is much higher than stoichiometrically required, so this large amount of water makes drying take a long time
Furthermore, the more water is added to the mixture, the larger the particle size of the final product will be, perhaps part of the excess water is not evaporated, which increases the specific gravity of the product and requires a subsequent and expensive drying process
[0012] Said additives also have the disadvantage that their specific gravity is equal to or greater than 800kg / m 3 , which greatly increases the weight of the built structure, and it is also very inconvenient to handle, transport and package these additives

Method used

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  • Method for production of additives enhancing water tightness of building materials

Examples

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preparation example Construction

[0030] The preparation of the additive material according to the invention is based on the knowledge that burnt lime, as a traditional component of mortar in the construction industry, undergoes a gelation process under the action of carbon dioxide in the air and forms CaCO 3 , by using a hydrophobic additive with a low relative density it is possible to mix burnt lime with a hydrophobic agent in the burnt lime itself. According to our research, suitable additives are vegetable oils, such as sunflower oil, rapeseed oil, palm oil, etc.

[0031] However, mixtures of vegetable oils with CaO and water form coarse dispersions and are not suitable for use in construction. Because vegetable oil is a fatty acid ester of glycerol, and glycerol (glycerol) is an alcohol containing three hydroxyl groups, that is, vegetable oil is a fatty acid ester of three oils, in most cases, one fatty acid molecule blocks glycerol All three hydroxyl groups of the triol, acid saturation and chain lengt...

Embodiment 1

[0054] The CaO of 40kg is put into the container C of powder mixing equipment 1 as base material, and the CaO of 40kg is about 45wt% of the raw material used in the reaction process. During operation of the powder mixing plant 1 , ie during continuous mixing operation, a mixture of 2 wt % ethanol and 0.1 wt % methanol is sprayed through nozzle F into container C based on the total mass of quicklime charged. Then, also by fine spraying, a hydrophobizing agent comprising 12% by weight of the raw materials used in the process and having the following composition was introduced into container C:

[0055] - 60% by weight of sunflower oil;

[0056] - 39.9 wt% ethanol;

[0057] - 0.1% by weight of methanol.

[0058] After the additions have been uniformly mixed, within 2-3 seconds, 46 liters of water (instead of about 13 L), comprising about 52 wt% of all contents in container C (i.e. a large chemical overmetering). After the chemical reaction starts, the powder mixing device 1 i...

Embodiment 2

[0065] The CaO of 40kg is put into the container C of powder mixing equipment 1 as base material, and the CaO of 40kg is about 45wt% of raw material used in the reaction process. During operation of the powder mixing plant 1 , ie during continuous mixing operation, a mixture of 3 wt % ethanol and 0.2 wt % methanol is sprayed through nozzle F into container C based on the total mass of quicklime charged. Then, a hydrophobic agent comprising 8% by weight of the raw materials used in the process and having the following composition was also introduced into container C by fine spraying:

[0066] - 60% by weight of sunflower oil;

[0067] - 38 wt% ethanol;

[0068] - 2% by weight of methanol.

[0069] After the additions have been uniformly mixed, within 2-3 seconds, 12 liters of water comprising about 26% by weight of the total content in vessel C (ie less than stoichiometric ratio) are added with stirring. After the vigorous chemical reaction starts, stop the equipment powder ...

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Abstract

The invention relates to an apparatus and a method for production of additives enhancing water tightness of structural and binding building materials. The method comprises the steps of: preparing a hydrophobing agent by esterifying 60-80 m% of vegetable oil by a mixture consisting of 20-40 m% ethyl alcohol and 0,1-5 m% of methyl alcohol of the whole mass of the agent, then adding 5-30 m% agent by spraying through nozzles and water to a body of burnt lime in a reactor, and prior to adding the agent and water a mixture of 2-8 m% ethyl alcohol and 0,1-1 m% of methyl alcohol of the whole mass of the body of burnt lime is added by spraying through nozzles, while the mixture is agitating mechanically till a homogeneous mixture is prepared, then adding 40-65 m% water to the mixture, and ceasing mechanical agitating after commencement of the fierce chemical reaction.

Description

technical field [0001] The invention relates to a method for producing an additive material for improving the watertightness of structures and cementitious building materials, comprising the steps of adding 20-40% by weight of ethanol and 0.1-5w % methanol is mixed with 60-80w% vegetable oil to prepare a hydrophobic agent through esterification of vegetable oil; then add the hydrophobic agent and water to quicklime. Also, the present invention relates to an additive material for improving the water tightness of structural and cementitious building materials, said additive material comprising slaked lime treated with a hydrophobic agent. The invention also relates to a mixing plant for the production of additive materials for improving the watertightness of structural and cementitious building materials, said mixing plant having a container suspended on a strut and tiltable about an axis, and provided on said container The feeding / discharging port. Background technique [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B2/06C04B22/06C04B24/08
CPCC04B2/06C04B22/064C04B24/08C04B28/02C04B2103/65C04B40/0042C04B20/1025C04B20/023C04B40/00C04B24/00B28C5/08C04B28/12B01F23/53B01F23/511B01F25/72B01F27/90B01F27/231B01F2101/28C04B24/045
Inventor 通德·托洛斯克费伦茨·托洛斯克朵拉·托洛斯克
Owner 费伦茨托洛斯克
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