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amount of superplasticizer is usually increased to maintain the working performance of the concrete and make the concrete have good fluidity. However, the increase of the dosage of water-reducing agent can easily lead to the segregation and bleeding of concrete, and reduce the compressive strength of concrete.
MasterGlenium 3030 | Master Builders Solutions - North America
MasterGlenium 3030 admixture meets ASTM C 494/C 494M requirements for Type A, water-reducing, and Type F, high-range water-reducing, admixtures. Recommended uses of MasterGlenium 3030 concrete superplasticizer: Concrete where high flowability, high-early and ultimate strengths and increased durability are needed; Self-consolidating concrete
HV6128 - Institute of Physics
common, this puts higher requirements on the performance of polycarboxylate superplasticizer[5-6]. At present, the water reducing agent on the market has early bleeding due to the high water-reducing rate, and the stagnation of the stagnation of the stagnation agent requires the
Effect of Functional Polycarboxylic Acid
no water-reducing agent, while the other groups are mixed with di erent water-reducing agents. Under the same water consumption (water-to-cement ratio), the uidity of groups B and H is poor
ADVA 190 Data Sheet | Resource | GCP Applied Technologies
ADVA 190 superplasticizer addition rates can vary with type of application, but will normally range from 3 to 15 fl oz/100 lbs (195 to 980 mL/100 kg) of cementitious. In most instances, the addition of 3 to 6 fl oz/100 lbs (195 to 375 mL/100 kg) of cementitious will be sufficient. At a given water/cementitious ratio, the slump required for
- What are water reducers & retarders?
- Water reducers, retarders, and superplasticizers are admixtures for concrete, which are added in order to reduce the water content in a mixture or to slow the setting rate of the concrete while retaining the flowing properties of a concrete mixture.
- What are water reducing admixtures used for?
- This is ideal for the production of conventional slump concrete, Self Consolidating Concrete (SCC), ready mix applications, and more. Water reducing admixtures improve workability and finishability, as well as the concrete's strength. They will affect the following properties, depending on dosage and application:
- Can superplasticizers produce high strength concrete?
- The use of superplasticizers may produce high strength concrete (compressive strength up to 22,000 psi). Superplasticizers can also be utilized in producing flowing concrete used in a heavy reinforced structure with inaccessible areas. Requirement for producing flowing concrete is defined in ASTM C 1017.
- What are water reducers?
- Water reducers consist of chemicals that aim to reduce the water to cement ratio in concrete. As a result, they tend to increase strength while minimizing impact on any other properties of the concrete. A major characteristic is the capability to substantially reduce the water content of a mix.
- What is a high range water reducer admixture?
- Superplasticizers (High Range Water reducer) ASTM C494 Type F and Type G, High Range Water Reducer (HRWR) and retarding admixtures are used to reduce the amount of water by 12% to 30% while maintaining a certain level of consistency and workability (typically from 75 mm to 200 mm) and to increase workability for reduction in w/cm ratio.
- How many liters of superplasticizers per cubic meter of concrete?
- Typical dosage of superplasticizers used for increasing the workability of concrete ranges from 1 to 3 liters per cubic meter of concrete where liquid superplasticizers contained about 40 % of active material. In reducing the water cement ratio, higher dosage is used, that is from 5 to 20 liters per cubic meter of concrete.
