A kind of natural retarder, its preparation method and application
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A retarder, a natural technology, applied in the field of natural retarders, can solve the problems of chemical retarders crisis human health, concrete early strength reduction, environmental pollution, etc., achieve good retarding effect, early strength and late strength The effect of reducing and lowering the production cost
Active Publication Date: 2022-08-09
ANHUI UNIV OF SCI & TECH
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[0003] In order to solve the defects that the above-mentioned retarders exist, the purpose of the present invention is to provide a natural retarder and a preparation method thereof. Material crisis human health and pollution to the environment and the problem of early strength reduction of concrete
Method used
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preparation example Construction
[0022] The invention provides a preparation method of a natural retarder, comprising the following steps:
[0023] Step S1, wash the fresh carrots, peel them, cut them into small pieces, put them into a juicer without adding water and squeeze them into carrot juice;
[0024] Step S2, mixing the carrot juice with water to prepare a natural retarder.
[0025] In the present invention, carrot juice is firstly prepared, fresh carrots are washed, peeled, cut into small pieces, put into a juicer without adding water and squeezed into carrot juice, and the carrot juice preparation process is carried out at room temperature.
[0026] The said natural retarder is prepared by mixing carrot juice and water. The manufacturing process of the natural retarder is carried out at normal temperature.
[0027] The natural retarder has been tested by infrared spectroscopy and contains hydroxyl functional groups (OH - ), CH 2 group, rhamnose.
[0028] the OH - It shows that the natural retar...
Embodiment 1
[0035] At room temperature, weigh 10 g of carrot juice and 2000 g of water, add it to a beaker, stir with a glass rod for 1 minute, and seal with plastic wrap.
Embodiment 2
[0037] At room temperature, weigh 10 g of carrot juice and 1000 g of water, add it to a beaker, stir with a glass rod for 1 minute, and seal with plastic wrap.
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Abstract
The invention discloses a natural retarder, a preparation method and application thereof. The preparation method of the natural retarder includes the following steps: Step S1, fresh carrots are washed, peeled, cut into small pieces, put into squeezed The carrot juice is squeezed into carrot juice without adding water to the juicer; in step S2, the carrot juice is mixed with water to obtain a natural retarder. The raw material used in the present invention is carrot, which is widely distributed in my country, and its juice is rich in content. The effective components can be obtained simply by mechanical pulverization. It can effectively adsorb the cement particles, and can also partially coat the cement particles and hydration products, thereby blocking the formation of crystals and achieving the retarding effect. The coagulation effect is maintained, and the early strength and late strength are not reduced.
Description
technical field [0001] The invention relates to the field of building material admixtures, in particular to a natural retarder, a preparation method and application thereof. Background technique [0002] As a kind of admixture, retarder is widely used in various engineering constructions because it can maintain the fluidity of fresh concrete for a long time, which greatly improves the on-site utilization rate of fresh concrete and reduces the It has solved the problems of waste of resources and serious pollution in the domestic construction industry. However, the addition of retarder will adversely affect the early strength of concrete, which makes the retarder unable to be used in projects that require high early strength. In addition, most of the retarders and other admixtures currently used in the construction industry are chemical admixtures, the production process is cumbersome, and harmful substances are produced during their production and use, which threatens human ...
Claims
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Application Information
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