Ultraviolet and fluorescent dual-tracing concrete admixture and preparation method thereof

Abstract

The invention discloses an ultraviolet and fluorescent dual-tracing concrete admixture. The ultraviolet and fluorescent dual-tracing concrete admixture is obtained by performing a free radical polymerization reaction on an allyloxy polyvinyl ether monomer or a blocked allyloxy polyvinyl ether monomer, an unsaturated carboxylic acid monomer or an unsaturated carboxylic acid anhydride monomer and an unsaturated double bond-containing water-soluble fluorescent monomer, wherein the unsaturated double bond-containing water-soluble fluorescent monomer is 4-(N'-methyl-1-piperazinyl)-N-hydroxyethyl-1,8-naphthal allyl ammonium chloride or 4-(N'-hydroxyethyl-piperazinyl)-N-hydroxyethyl-1,8-naphthal allyl ammonium chloride. Raw materials for synthesizing a polymer are non-toxic and harmless, so that the characteristic of clean production is met; when the polymer is used as a water-reducing agent, a polymer product can be directly used without being separated; the polymer product has a relatively small addition amount as well as excellent dispersion with relatively high mobility, and the advantage of the relatively small solid addition amount can greatly reduce the cost and increase economic benefits, so that the polymer product is suitable for market promotion.

Description

technical field [0001] The invention belongs to the technical field of polymer synthesis, and in particular relates to an ultraviolet and fluorescent dual tracer concrete admixture and a preparation method thereof. Background technique [0002] Concrete water reducer is a concrete admixture that can reduce the amount of mixing water while maintaining the slump of concrete. After adding the concrete water reducing agent, it can disperse the cement particles, improve its workability, reduce the unit water consumption, improve the fluidity of the concrete mixture or reduce the unit cement consumption, and save cement. Concrete water reducers mostly belong to anionic surfactants, the existing concrete water reducers include lignosulfonate, naphthalene sulfonate and so on. Among the existing concrete water reducers on the market, such as naphthalene-based water reducers, they are used in concrete and tested according to GB / T8077-2000 "Test Method for Homogeneity of Concrete Admi...

AI Technical Summary

Problems solved by technology

At present, high-efficiency concrete superplasticizers mainly rely on imports, and the price is relatively expensive. Therefore, the country develops solutions to this problem and conducts in-depth research on concrete superplasticizers. In order to further realize localized high-efficiency superplasticizer technology and products

[0004] At present, the existing water reducing agents on the market do not have trace detection function, so it is difficult to quickly and conveniently detect the content of the water reducing agent accurately. In the sales process, it is impossible to detect whether illegal traders add excessive water to reduce costs. Adding too much water to the water reducing agent will affect the construction quality; in addition, because the existing water reducing agent does not have the characteristics of tracer, it is impossible to analyze the filling of the concrete and the hollowing cracks more accurately and deeply during use. The situation also affects the smooth progress of the construction. Once the internal hollowing and cracking are serious, the building wall will fall off, leak or collapse, endangering personal safety, and the existing technology cannot accurately and efficiently carry out post-repair of hollowing cracks. and reinforcement, so it is necessary to improve the existing water reducer

However, there is no report on the use of polyether or end-capped polyether polymers in concrete water reducers

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