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Concrete retarder, as well as preparation method and application thereof

A technology of concrete and setting retarder, applied in the field of setting retarder, can solve the problems of poor effect of exposed aggregate concrete, easy penetration of the setting retarder into the periphery or the interior of concrete, etc., and achieve the effect of accurate graphics and high efficiency

Active Publication Date: 2017-05-10
惠州筑友智造科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when it is used in a specific position of concrete to prolong the setting time or the concrete forms an exposed aggregate surface, the retarder is easy to penetrate into the surrounding area or the interior of the concrete, resulting in prolonged setting time at the surrounding area or the poor effect of the exposed aggregate concrete formed. The problem

Method used

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  • Concrete retarder, as well as preparation method and application thereof
  • Concrete retarder, as well as preparation method and application thereof

Examples

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preparation example Construction

[0038] see figure 1 , the present invention also provides a preparation method of the above-mentioned concrete retarder, the preparation method comprising the following steps.

[0039] Step S11: Mix C5 resin and methyl rosinate evenly to obtain a retarded body.

[0040] Step S12: Mix the retarder body, solvent and emulsifier evenly, and then mix with the drier and thickener to obtain the concrete retarder.

[0041] In one of the embodiments, when the concrete retarder also includes a cosolvent and / or a leveling agent and / or a filler and / or a pigment, after the retarder body, a solvent and an emulsifier are mixed uniformly, the cosolvent and / or Add leveling agent and / or filler and / or pigment and mix evenly.

[0042] Preferably, mechanical agitation is used for mixing both in step S11 and step S12, and the agitation speed is 800-1000 r / min. Preferably, the time for mixing the retarding main body, the solvent and the emulsifier in step S12 is 10 minutes. Preferably, it is eve...

Embodiment 1

[0061] The concrete retarder includes the following components in parts by weight: 27.5 parts of retarding main body, 50 parts of main solvent, 3 parts of emulsifier, 0.3 part of drier, 8 parts of thickener, 0.7 part of auxiliary solvent, 0.5 part Leveling agent, 8 parts of filler and 2 parts of pigment. The mass ratio of carbon five resin and rosin methyl ester in the retarding main body is 10:1, and main solvent is xylene, and emulsifier is OP-109 (alkylphenol polyoxyethylene ether) that Xingtai Lanxing Auxiliary Factory provides, catalyst The drying agent is cobalt drier, the thickener is fumed silica, the cosolvent is cyclohexanone, the leveling agent is hydroxymethyl cellulose ether (molecular weight is about 40,000), and the filler is a mass ratio of 1:1 325 mesh quartz sand and 800 mesh talcum powder, the pigment is iron red.

[0062] The preparation method of the concrete retarder comprises the following steps: uniformly mixing carbon five resin and methyl abietate to...

Embodiment 2

[0064] The concrete retarder includes the following components in parts by weight: 30.5 parts of retarding body, 60 parts of main solvent, 1 part of emulsifier, 0.1 part of drier, 5 parts of thickener, 2 parts of auxiliary solvent, 0.4 part leveling agent and 1 part pigment. The mass ratio of carbon five resin and rosin methyl ester in the retarding main body is 20:1, the main solvent is ethylene glycol ether, the emulsifier is AEO-9 (fatty alcohol polyoxyethylene ether) provided by BASF, and the drier is cobalt The drier and thickener are fumed silica, the cosolvent is cyclohexanone, the leveling agent is M30 cellulose ether (molecular weight is about 40,000) provided by Yilaitai, and the pigment is organic blue. The preparation method of Example 2 is similar to that of Example 1, and will not be described in detail here.

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Abstract

The invention discloses a concrete retarder, as well as a preparation method and application thereof. The concrete retarder comprises the following components: a retarding main body, a main solvent, an emulsifier, a drying catalyst and a thickening agent, wherein the retarding main body is a mixture of a C5 resin and methyl abietate; the main solvent is at least one of dimethylbenzene, dichloroethylene, trichloroethylene and glycol ethylene ether. The methyl abietate is decomposed into an abietic acid in water, a calcium ion is induced by the abietic acid to exist in a free state, and the coagulation time of alkaline concrete is further prolonged to achieve a retarding effect. Only the methyl abietate at a position contacting with the concrete is reacted with water in the concrete for decomposition, and in addition, the C5 resin is mixed with the methyl abietate to serve as a carrier of the methyl abietate, so that the flowability of the methyl abietate is further reduced, meanwhile, the uniformity of the methyl abietate in the concrete retarder is improved, and the concrete retarder can be further used for a specific position of the concrete to prolong the coagulation time or form the exposed aggregate surface of the concrete.

Description

technical field [0001] The invention relates to the technical field of retarders, in particular to a concrete retarder and its preparation method and application. Background technique [0002] Concrete retarder is an admixture that can delay the hydration reaction of cement and prolong the setting time of concrete. Concrete retarder can keep the newly mixed concrete plastic for a long time to facilitate pouring and improve construction efficiency, or it can act on the surface of concrete to form exposed aggregate concrete. [0003] At present, concrete retarders can be divided into two categories: inorganic retarders and organic retarders according to their chemical composition. However, when it is used in a specific position of concrete to prolong the setting time or the concrete forms an exposed aggregate surface, the retarder is easy to penetrate into the surrounding area or the interior of the concrete, resulting in prolonged setting time at the surrounding area or the ...

Claims

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Application Information

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IPC IPC(8): C04B41/69
CPCC04B41/5144C04B41/515C04B41/69C04B41/48C04B41/474C04B41/463C04B41/4896C04B41/5035C04B41/4803C04B41/5024C04B41/5027C04B41/46C04B41/501
Inventor 丑纪能王术华康志坚
Owner 惠州筑友智造科技有限公司
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