Anti-crack and anti-corrosion plasticizer composition and preparation method thereof

Abstract

The present invention relates to an anti-crack and anti-corrosion plasticizer composition for concrete, mortar and neat plaster, and a preparation method thereof. The anti-crack and anti-corrosion plasticizer composition of the present invention comprises the following components, by weight, 20-30% of a shrinkage reducing plasticizer, 5-15% of an acid and a substance capable of generation of an acid, 1-6% of a corrosion inhibitor, 0.1-1% of a catalyst, 1-3% of a neutralizer, 0.1-0.3% of a hydrophobic agent, 5-40% of a micro expansion agent, 0.05-0.5% of an air-entraining agent, 0.1-0.5% of a water-retaining agent, 1-5% of a compacting agent and 15-55% of a carrier. The method for preparing the composition comprises: adopting processes of a polymerization reaction, spray drying and combination to prepare the liquid and the powder, wherein the base material is adopted as the main body to combine into the standard type product, the retardation setting type product and the high efficiency type product of the composition so as to meet requirements of different engineering qualities, the new technical process with characteristics of high performance, environmental protection and energy saving, and cost reducing.

Description

technical field [0001] The invention relates to an admixture for concrete, mortar or clean slurry, in particular to an anti-crack and anti-corrosion plasticizer composition for concrete, mortar and clean slurry and a preparation method thereof. Background technique [0002] In modern building structures, concrete, mortar, and cement slurry engineering are important parts of the entire construction project. With the rapid development of infrastructure such as modern high-speed railways, highways, and energy, it is advocated to adhere to energy conservation and emission reduction, low-carbon economy, With the strategic policy of green environmental protection and sustainable development, modern buildings put forward higher technical requirements for durability, energy saving and environmental protection. [0003] The important factors affecting the durability of modern structures are: the performance of basic materials in different natural environments cannot meet the requirem...

AI Technical Summary

Problems solved by technology

[0003] The important factors affecting the durability of modern structures are: the performance of basic materials in different natural environments cannot meet the requirements of modern construction technology, so that there are many defects in the formation of structures, and the chemical and physical properties of materials are significantly different, resulting in such as construction water glue Large ratio, serious bleeding and segregation, poor stability of freshly mixed materials, poor compactness of hardened structures, poor volume stability, large deformation shrinkage rate, serious cracks and cracks, low corrosion resistance of cementitious materials, serious corrosion of steel bars, and structural engineering in long-term corrosion Medium corrosion environment, such as water, oxygen, acid rain, sulfate, chloride salt, magnesium salt, carbonate, harmful gas and other corrosion and leakage, will significantly reduce the durability and service life of structural engineering, increase maintenance costs, and cause engineering accidents , while increasing the resources and energy of material production and construction, the serious pollution to the environment has become a cancer of structural engineering, and has become an important topic of research by world structural engineering experts.

[0004] The treatment method for the durability of modern structures is: add various admixtures to cement paste, mortar, and concrete separately or simultaneously, and use different construction techniques to solve structural engineering cracks, leakage, corrosion, rust, abrasion, carbonization, Durability issues such as freeze-thaw damage, and new construction techniques (such as: high lift, pumping, sliding form, prestressing, early strength, high strength, etc.) to achieve high performance in modern engineering, but these methods are too complicated to use, Complexity, inaccurate measurement, and various admixtures are composed of different chemical components. Therefore, when these admixtures with different functions are combined, they interact to produce chemical and physical reactions, causing many negative factors, resulting in unsatisfactory structural engineering and construction. Quality and Technical Requirements

For the long-term performance and technical quality of long-span construction technology of bridge and tunnel projects of high-speed railways and highways, high-grade cement rubber and high-quality aggregate must be used, and high-pumping slipform or prestressed construction technology must be implemented, and high water-reducing materials must be added to the concrete materials. Plasticizers, pumping agents, preservatives, rust inhibitors, waterproofing agents, anti-cracking agents, airtight agents, anti-corrosion agents, alkali aggregate activity inhibitors, antifreeze agents, water retention, thickening and stabilizing agents More than ten kinds of products such as fiber and fiber meet its technical quality requirements, which will not only make the construction process cumbersome and significantly increase the cost, but also because of the direct physical and chemical effects of various admixtures, simply mixing them will also affect the whole. Anti-crack and anti-corrosion performance in construction

In addition, after the construction is completed, it is necessary to use durable protective materials such as waterproof, anti-corrosion, fire-resistant coatings or laying waterproof boards and waterproof membranes.

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