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Concrete/Cement Admixture-aliphatic Series Water Reducing Agent

Use of Water Reducers, Retarders, and Superplasticizer

Use of Water Reducers, Retarders, and Superplasticizers. Introduction. Many important characteristics of concrete are influenced by the ratio (by weight) of water to cementitious materials (w/cm) used in the mixture. By reducing the amount of water, the cement paste will have higher density, which results in higher paste quality.

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Water Reducers, Mid-Range - North America

Water Reducers, Mid-Range Provide excellent concrete workability and finishability. Mid-range water-reducing admixtures promote superior workability and finishing of concrete, and improve concrete performance with excellent early strength and rheology. Non-chloride admixtures; Facilitates finishing to achieve desired surface appearance

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Seven Must-Use Concrete Admixtures (Additives)

What is "water reducing" admixtures?

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concrete water reducing agent - Anhui Elite Industrial Co ...

China concrete water reducing agent catalog of Naphthalene Superplasticizer Water Reducing Agent for Concrete Admixture, Concrete Retarder of 98% Sodium Gluconate provided by China manufacturer - Anhui Elite Industrial Co., Ltd., page1.

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Materials Selection Guide: Water-Reducing Admixtures ...

Dec 05, 2006 · Decreasing the water content reduces the water-cement ratio, thereby increasing the resulting concrete's strength. These admixtures can be broken into three main categories. Conventional water-reducing admixtures—also known as low-range water reducers—represent the first generation of water-reducing admixtures that have been around for more ...

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Revealing the Mystery of Admixtures: Water-Reducing and Set ...

May 29, 2010 · Water-Reducing Admixtures Water reducers do essentially that: reduce the amount of mixing water required to obtain a given slump. This can result in a reduction of the water-cementitious ratio (w/c ratio), which leads to increased strengths and more durable concrete.

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Superplasticizer I Concrete admixtures I Super plasticizer

By reducing the amount of water. The cement paste will have higher density, which result in higher paste quality. An increase in paste quality will yield higher compressive and flexural strength, lower permeability, increase resistance to weathering, improve the bond of concrete and reinforcement, reduce the volume change from drying and ...

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Effects of Shrinkage Reducing Agent and Expansive Admixture ...

This paper investigated the influences of shrinkage reducing agent and expansive admixture on autogenous and drying shrinkage of ultrahigh performance concrete (UHPC) containing antifoaming admixture. The shrinkage reducing agent was used at dosage of 0.5%, 1%, and 2% and the expansive admixture was used at dosage of 2% to 4% by mass of cementitious material. The results show that the air content of UHPC increases with the higher addition of shrinkage reducing agent and expansive admixtures. How

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Performance of Different Water Reducing Chemical Admixtures

The variables include cement types (ordinary portland cement, blended cement replaced by slag powder of 4080 and 7900 cm2/g), air-entraining (vinsol) chemical admixture, water-reducing (lignosulfonate type) chemical admixture, high-range water-reducing and air-entraining (naphthalene, melamine, polycarboxyl, and amion-sulfonate types) chemical ...

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A Closer Look: Water-Reducing Admixtures - NPCA

Water-reducing admixtures have a similar backstory – researchers stumbled upon an admixture’s impact on water demand while trying to evenly disperse pigment in concrete. In 1930, Cabot Corporation had promised to create a black concrete for a local state road, but trial batches yielded a blotchy result.

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Waterproofing Admixtures For Concrete| Concrete Construction ...

Aug 13, 2012 · Table 1, reproduced from ACI 212.3, summarizes results from a series of permeability tests performed on concrete mixes with and without three different types of PRAs. Note that these results only indicate the reduction in permeability between the reference and test concrete for each admix type.

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Concrete admixture | GCP Applied Technologies

Mid-range water reducers – These admixtures provide superior placeability and finishing for concrete flatwork, in commercial and high-end residential construciton. They are manufactured under rigorous quality control to ensure uniform, predictable performance.

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Application of Water Reducing Agent in Concrete of ...

Tests of cement paste and concrete of Portland cement (P∙O42.5) were carried out under different temperature, because this kind of cement is widely used in the current projects. Results show that polycarboxylic series water reducer, compared with naphthalene series water reducer, have properties of high compatibility, low mixing amount, high ...

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Durability of Latex Modified Concrete Mixed with a Shrinkage ...

reducing agent could reduce the surface tension of capillary water to 30 * 45 mN/m, decreasing drying shrinkage (Kim et al. 1997). 3. Experiment Plan and Method 3.1 Test Variables In order to evaluate the properties of the LMC mixed with the shrinkage reducing agent, the mixing ratio of the shrinkage reducing agent used in ordinary concrete was ...

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Science and Technology of Concrete Admixtures | ScienceDirect

The use of shrinkage-reducing admixtures is a simple and efficient way to fight early cracking of concrete with a water–cement ratio (w/c) or water–binder ratio (w/b) less than 0.40 due to the early development of autogenous shrinkage, as well as the long-term cracking of concretes with w/b or w/c greater than 0.40 that are subjected to ...

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