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MidRange Water Reducers and Air Content| Concrete

PDF Myth 1: Adding water to the mix is the only way to

maintaining the water-to-cement ratio. And air-entrainment can increase workability. Adding water to a mix that contains chemical admixtures will change the properties of the mix and can cause excessive slump loss, inconsistent setting, and changes in air content. Myth 2: Specify a concrete mix by the number of bags of cement.

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Dolese | FAQ Page

Type A water reducing admixtures are added to concrete to reduce the water-cement ratio or to improve the workability of concrete without changing the water-cement ratio. Water reducers typically decrease water content by 5 to 10 percent. Mid-Range Water Reducing Admixtures (MRWRA) Mid-range water reducing admixtures can be used in a variety of

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Water Reducer for Portland Cement | GCP Applied Technologies

No impact on concrete air content; Better control of water reduction and setting times; Synergistic performance of polycarboxylate-based mid-range and high-range water reducers; Improves the compressive and flexural strengths at all ages of concrete

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PPTX Planning for slab-on-ground placement

For steel-troweled concrete, there are potentially serious finishing problems such as blistering or delamination when concrete contains too much entrained air. ACI 302.1R recommends no more than 3% total air in concrete to receive a hard-trowel finish. Some water reducing admixtures entrain air. Therefore, even the air content of concrete

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The Benefits of Air-Entrained Concrete - Coral Cast

OTHER KNOWN BENEFICIAL QUALITIES OF HAVING AIR-ENTRAINED CONCRETE ARE; Increases the porosity of the concrete while at the same time, reducing its permeability to water and liquids in general. Increasing the consistency of the concrete, in a manner similar to that obtained by adding fine-grained form. Increases the level of fluidity of the

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SikaPlast® V-220 | Mortar Improvers

Mid-range water reducing admixture SikaPlast® V220 is a multi-purpose water reducer and superplasticizer, utilizing Sika's 'ViscoCrete' polycarboxylate polymer technology. Water Reduction: SikaPlast® V220 can be dosed at low to medium quantities to obtain water reduction from 5-15% and will achieve water reduction up to 22% at high dosage rates.

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PDF PRODUCT DATA SHEET SikaPlast® 3-in-1

doses as a water reducer, at mid doses as a mid-range water reducer and at high does as a high-range water reducer USES SikaPlast® 3-in-1 is ideal for the following applications: As a true neutral set Water Reducing admixture used in combination with Accelerators, Retarders and Air Entrainers to produce a wide range of products and

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water reducers | Civil Engineering

These admixtures reduce water content by at least 8 percent and tend to be more stable over a wider range of temperatures. Mid-range water reducers provide more consistent setting times than standard water reducers. Retarding admixtures, which slow the setting rate of concrete, are used to counteract the accelerating effect of hot weather on

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Chloride Penetration - Remedial and Proactive Avoidance

Water-reducing admixtures can decrease water content for a given slump by 5 - 10%, while superplasticizers may reduce water content by 15 - 30%. Addition of pozzolans may also decrease the permeability of concrete. Silica fume, fly ash and ground granulated blast furnace slag in concrete will significantly reduce the water permeability of

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High Range Water Reducer - How is High Range Water Reducer

Tested in a concrete mix with 20 percent ASTM C618 material, a colloidal silica admixture shows the potential to enhance fresh concrete properties; reduce high range water reducer and air-entraining agents; increase early and 28-day compressive strengths as measured against control specimens; and, allow a reduction in cement content while maintaining target, hardened-concrete properties.

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Concrete Admixtures | DCP

Mid-range water reducing and retarding concrete admixture based on polycarboxylic polymers. See more. Hyperplast. Concrete Admixtures Air Entrainers & Foaming Agents Cemairin. F300. Air enteraining agent for concrete. The content of this site is subject to copyright.

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