PRODUCTS

The leading brand of mining machinery!

ONLINE MESSAGE

For More Information

admixtures for pumping concrete:

The Role of Admixtures in Pumping Concrete| Concrete ...

Pumping aids represent a new development in the role played by admixtures in the pumpability of concrete, one which promises to be a significant advance in concrete pumping technology. A pumping aid is a lubricant that improves the ease with which a given mix can be pumped through a line. This means lower pump pressures, reduced pressure on the ...

Read More
Admixtures for Concrete - Memphis

2021-8-9 · foaming, and pumping admixtures Table 6-1 provides a much more extensive classification of admixtures. Concrete should be workable, finishable, strong, durable, watertight, and wear resistant. These qualities can often be obtained easily and economically by the selection of suitable materials rather than by resorting to admixtures

Read More
Admixtures and pumped concrete in high-rise applications

Advancements made in admixtures have enabled construction companies overcome the challenges of pumping concrete in high-rise building. A suitable admixture ensures that group fraction of pumped ...

Read More
The 23 types of Concrete Admixtures(Additives)used in

2021-3-23 · Concrete admixtures: Pumping agent. Pumping agent is pumped concrete mix to improve performance additives, refers to concrete mixture through the delivery conduit having a smooth, no blocking, no performance segregation, good plastic material. Pumping agent is a kind of fluidizing agent. In addition to greatly improving the fluidity of the ...

Read More
Concrete Admixtures - Types and Functions - Cement

Concrete admixtures have various functions and they are as follows: (a) To increase the rate of strength development at early ages – calcium chloride is the most widely used accelerator, (b) To retard the initial setting time while pumping concrete over a long distance, (c To increase the workability without changing the water content ...

Read More
Concrete Admixtures - Sika

2021-11-19 · Shotcrete Solutions; Sika is the expert in all sprayed concrete technologies, including both wet and dry spray processes. This allows us to provide the optimum solution for each type of project and application, including the development of our own

Read More
Concrete Admixtures | Chemical Admixtures for Concrete ...

Riteks rheology technologies are performance-enhancing, productivity-improving admixtures for self-consolidating, low slump, underwater, and pervious concrete applications. Viscosity controllers offer elite workability and pumping while improving the look of the product and its finishability. REQUEST SDS. VIEW PRODUCT INFO.

Read More
Effect of Cement Content, Fibers, Chemical Admixtures and ...

2012-10-2 · The transport of fresh concrete by pumping is an important process and widely used in practical concrete technology. This process has been applied since the beginning of the twentieth century. More recent developments of pumping equipment and findings on mineral and chemical admixtures have prompted more sophisticated research on pumping concretes. While they do not

Read More
Mix Design and Pumped Concrete - Civil Engineering

Concrete without admixtures and of high cement content, over about 460 kg/m 3 are liable to prove difficult to pump, because of high friction between the concrete and the pipeline. Cement contents below 270 to 320 kg/m 3 depending upon the proportion of

Read More
Factors Affecting Pumping of Concrete - Civil Bull

2021-7-18 · A concrete pumped through a pipeline up to a certain distance or height is called pumpable concrete. There are several properties of concrete and its components which affect the pumping quality of concrete. Some significant factors are aggregates, admixtures, and weather. This article will discuss every aspect of these elements how they ...

Read More
Admixtures for Cold Weather Concrete Pumping - Fritz

2021-10-1 · Admixtures for Cold Weather Concrete Pumping. Home; Articles & Events; Published: 10.01.2021. Filed Under: Concrete Pumpers. Concrete pumping requires precision, dedication, and close attention any time of the year – but if you’re pumping concrete in the throes of winter weather, you have to be especially attentive. If the concrete freezes ...

Read More
Admixtures and pumped concrete in high-rise applications

Advancements made in admixtures have enabled construction companies overcome the challenges of pumping concrete in high-rise building. A suitable admixture ensures that group fraction of pumped ...

Read More
Admixtures for Concrete - course.sdu.edu.cn

2016-4-11 · and pumping admixtures Table 6-1 provides a much more extensive class ifi cation of admixtures. Concrete should be workable, finishable, strong, durable, watertight, and wear resistant. These qualities can often be obtained easily and economically by the selection of suitable materials rather than by resorting to admixtures

Read More
Concrete Admixtures - Types and Functions - Cement

Concrete admixtures have various functions and they are as follows: (a) To increase the rate of strength development at early ages – calcium chloride is the most widely used accelerator, (b) To retard the initial setting time while pumping concrete over a long distance, (c To increase the workability without changing the water content ...

Read More
CIP 15 - Chemical Admixtures for Concrete

2020-9-11 · hardened concrete. Admixtures may enhance the durability, workability or strength characteristics of a given concrete mixture. Admixtures are used to overcome difficult con-struction situations, such as hot or cold weather placements, pumping requirements, early strength requirements, or very low water-cement ratio specifications. Chemical ...

Read More
Concrete Admixtures | Chemical Admixtures for Concrete ...

Riteks rheology technologies are performance-enhancing, productivity-improving admixtures for self-consolidating, low slump, underwater, and pervious concrete applications. Viscosity controllers offer elite workability and pumping while improving the look of the product and its finishability. REQUEST SDS. VIEW PRODUCT INFO.

Read More
Mix Design and Pumped Concrete - Civil Engineering

Concrete without admixtures and of high cement content, over about 460 kg/m 3 are liable to prove difficult to pump, because of high friction between the concrete and the pipeline. Cement contents below 270 to 320 kg/m 3 depending upon the proportion of

Read More
Sika® Lube One | Pump Lubricator

2021-11-8 · Sika® Lube One is mixed with 30 liters of water either in drum or in the hopper of the concrete pump by reverse pumping two strokes. Mix Sika® Lube One and water for approximately 2 minutes or until the mixture assumes a greasy condition. Add this mixture into the pump ahead of the concrete. Dosage depend upon the condition of pipelines.

Read More
Difficult problems and countermeasures of pumping

2021-10-8 · (4) Reduce the amount of concrete admixture. (5) Improves air entrainment, thickening and water retention functions of concrete admixtures. 4. Reasons and solutions for pumping concrete slump loss problem 4.1 Reasons (1) Poor adaptability of concrete

Read More
Making Concrete Pumpable| Concrete Construction

2020-1-28 · Ruttura, who pumped for the construction of the World Trade Center, says, “If you’re pumping high-strength concrete with a water-cement ratio of 0.28, that’s not efficient; we were only able to get about 20 yards an hour.”. It can also put a lot of

Read More
Admixtures for Cold Weather Concrete Pumping - Fritz

2021-10-1 · Admixtures for Cold Weather Concrete Pumping. Home; Articles & Events; Published: 10.01.2021. Filed Under: Concrete Pumpers. Concrete pumping requires precision, dedication, and close attention any time of the year – but if you’re pumping concrete in the throes of winter weather, you have to be especially attentive. If the concrete freezes ...

Read More
Admixtures for Concrete - course.sdu.edu.cn

2016-4-11 · and pumping admixtures Table 6-1 provides a much more extensive class ifi cation of admixtures. Concrete should be workable, finishable, strong, durable, watertight, and wear resistant. These qualities can often be obtained easily and economically by the selection of suitable materials rather than by resorting to admixtures

Read More
Concrete Admixtures - Types and Functions - Cement

Concrete admixtures have various functions and they are as follows: (a) To increase the rate of strength development at early ages – calcium chloride is the most widely used accelerator, (b) To retard the initial setting time while pumping concrete over a long distance, (c To increase the workability without changing the water content ...

Read More
CIP 15 - Chemical Admixtures for Concrete

2020-9-11 · hardened concrete. Admixtures may enhance the durability, workability or strength characteristics of a given concrete mixture. Admixtures are used to overcome difficult con-struction situations, such as hot or cold weather placements, pumping requirements, early strength requirements, or very low water-cement ratio specifications. Chemical ...

Read More
High Performance Concrete Admixtures

2021-11-13 · On the other hand, sometimes the cement content may be lowered while maintaining the original w/c ratio to reduce costs or the heat of hydration for mass concrete pours. Water-reducing admixtures also reduce segregation and improve the

Read More
Miscellaneous Admixtures | Civil Engineering

Miscellaneous Admixtures. There are many miscellaneous concrete additives for use as pumping aids and as dampproofing, permeability-reducing, gas-forming agents. Pumping aids are used to decrease the viscosity of harsh or marginally pumpable. mixes. Organic and synthetic polymers, fly ash, bentonite, or hydrated lime may be used for this purpose.

Read More
7 Types of Concrete Chemical Admixtures and Minerals

2018-10-24 · Superplasticizer enables the saving in the cement and makes the concrete ideal for pumping, Casting heavily reinforced concrete members and precast elements of concrete. 5: Waterproofers: This type of admixture was added in concrete to make the structure waterproof.

Read More
Sika® Lube One | Pump Lubricator

2021-11-8 · Sika® Lube One is mixed with 30 liters of water either in drum or in the hopper of the concrete pump by reverse pumping two strokes. Mix Sika® Lube One and water for approximately 2 minutes or until the mixture assumes a greasy condition. Add this mixture into the pump ahead of the concrete. Dosage depend upon the condition of pipelines.

Read More
Mix Design and Pumped Concrete - Civil Engineering

Concrete without admixtures and of high cement content, over about 460 kg/m 3 are liable to prove difficult to pump, because of high friction between the concrete and the pipeline. Cement contents below 270 to 320 kg/m 3 depending upon the proportion of

Read More
Biopolymers with viscosity-enhancing properties for

2016-1-1 · VEAs developed for underwater concrete placement or repairs are better known as antiwashout admixtures. Underwater concrete is normally placed by pumping or by tremie in still or flowing water, and it is required to resist the loss of cement paste, which can be reduced as much as 50% if an antiwashout admixture is used in the mixture (ACI ...

Read More