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McLanahan offers a wide selection of Impact Crushers for quarried limestone and semi-abrasive minerals. McLanahan draws from the 75 years of field experience with the Universal line of Impactors, which includes impact breakers and Andreas-style impactors. At present, we offer the New Holland-style primary impact breaker and the MaxCap X-Series Primary, providing a means to reduce quarry shot and ROM materials at rates exceeding 2,000 tph. We also offer VersaCap P-Series Impactors for heightened portability as a primary crusher. The VersaCap R-Series is also designed to accept large top size in highly friable materials, and will allow for single crusher reduction to 1-1/2” minus product. In the case of limestone and similar materials, we offer the NGS Impact Crusher as a secondary impactor, which is capable of producing construction grade aggregates or minerals of like size. These five lines of horizontal shaft impactors are available in multiple sizes to provide us the ability to offer the most appropriate crusher for your specific application. 

15 Types of Admixtures Used in Concrete

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SECTION 2.19 - Pigmented Admixture for Portland Cement

SECTION 2.19 - Pigmented Admixture for Portland Cement 2.19.1. This section describes Pigmented Admixture for coloring Portland cement mixtures. 2.19.2. It shall be certified by the manufacturer that the Pigmented Admixture shall comply with the requirements of ACI 212.3R.89, 4.5.1, as water-reducing admixtures, and that their water-reducing

Understanding Concrete Admixtures | Fibo Intercon Batching Plant

Bob Evans is the Marketing Director for Fibo Intercon. Bob has been in the construction and civil engineering industry for over forty years. You can ask Bob a question on Understanding Concrete Admixtures or any other question on concrete or concrete batching plant by texting him on 07896 246 224 or Book a CALL.


Concrete is a mixture of cement, sand, gravel, water, and admixtures. Depending on the quantities of the respective raw materials and the way in which it is batched (mixed), the finished product will display different characteristics.

Influence of Mineral Admixtures on Self Compacting Concrete

admixtures without any compaction.In our research the normal beam is made by using M50 grade concrete and with blended concrete self compacting concrete beam is made.For the selection of blended mix the admixtures with higher compressive strength is preferred.And both the beams are

(PDF) Influence of Admixtures on Behavior of Concrete

The chemical admixture used was a type of Super plasticizer with a brand name of "DARACEM 190", and the cement used was Ordinary Portland Cement of target compressive strength 42.5 N/mm2, obtained ...

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ManuFlo - Chemical Admixture Measurement

ManuFlo is a major manufacturer & supplier of flowmetering / batch control / PLC interface equipment used for the measurement and dispensing of construction chemical admixtures in the Asian / Australian/NZ & Pacific regions. Other markets include South America, the Middle-East and northern Europe.

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VOLUMETRIC ADMIXTURE CALIBRATION GUIDELINES Admixtures are introduced through the High and Low Flow Admix Systems. These systems are governed through adjustable valves with visual flow indicators. The accuracy of these flow meters is guaranteed by their manufacturer for liquids with a viscosity (consistency) equivalent to water. It is not ...

Batching, Mixing, Transporting, and Handling Concrete, Chapter 10

Batching, Mixing, Transporting, and Handling Concrete. Fig. 10-3. Central mixing in a stationary mixer of the tilting drum type with delivery by a truck mixer operating at agitating speed. (69926) Fig 10-4. (top) Nonagitating trucks are used with central-mix batch plants where short hauls and quick concrete


MasterEase A New Admixture Technology for Reducing Concrete Viscosity Low-viscosity concrete is an overall concept focusing on the optimization of concrete viscosity and rheology over the entire time of concrete production, delivery, pumping, placing and finishing. It is based on the use of innovative admixtures as well as the provision

Setting Time of Concrete - Tips & Tricks

The two graphs below demonstrate the effects of accelerators and retarders on the setting time of concrete. Allied Concrete staff are more than happy to help you with any problems or enquiries. For more information or assistance, please don't hesitate to call. Your call will be automatically connected to our nearest plant.

An Investigation into the Use of Manufactured Sand as a 100%

Jun 02, 2016 · Water reducing admixtures can be used to compensate for this if the manufactured sand does not contain clay particles. At the same w/c ratio, the compressive and flexural strength of manufactured sand concrete exceeds that of natural sand concrete.

Waterproof Concrete

Utilising the latest admixture technology from admixture partner Sika®, Hanson's waterproof concrete gives confidence to all those involved in the project. Every good quality concrete will allow the passage of water through it as a function of capillarity, when there is water on one side of the structure and air on the other, the volume of ...

Production of Concrete Admixtures (Additives). Construction

23. What are the Profitability Ratios of Concrete Admixtures Manufacturing plant? 24. What is the Sensitivity Analysis-Price/Volume of Concrete Admixtures Manufacturing plant? 25. What are the Projected Pay-Back Period and IRR of Concrete Admixtures Manufacturing plant? 26. What is the Process Flow Sheet Diagram of Concrete Admixtures ...

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Admixture Dispensing Discharge Line Locations and Sequencing

Admixture Dispensing Discharge Line Locations and Sequencing for Concrete Batching Operations Cement hydration is a chemical reaction that begins when water is added to the concrete mix. Adding chemical admixtures to the concrete mix alters the chemical reaction in subtle and sometimes complex ways.

Sika Concrete Admixture

Jun 30, 2016 · Concrete stone with super plasticizer. How to make self consolidated high strength concrete stone - Duration: 5:26. GlobMarble 69,233 views

Standard Operating Procedure (SOP) 17--Concrete

Standard Operating Procedure (SOP) 17 Page 2 Representatives from the Office of Materials and Research, at unscheduled times, may visit the producer’s plant or warehouse and/or construction or maintenance projects to obtain random samples of items covered by this SOP.

Concrete Admixture Solutions | Sika Australia Pty. Ltd

Chloride containing admixtures can accelerate the corrosion of steel and therefore a non chloride containing admixture should be considered for reinforced concrete. Accelerators can be used either to increase the rate of setting or stiffening of concrete or increase the rate of strength gain in concrete.

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Fig. 1. Materials required for Ready Mix Concrete. 4 ADMIXTURE A substance added to the basic concrete mixture to alter one or more properties of the concrete; ie fibrous materials for rein-forcing, water repellent treatments, and colouring compounds. Air-entraining admixtures (mainly used in concrete exposed to freezing and thawing cycles)

Plasticizer admixture / for concrete

Find out all of the information about the CTS Cement/ Rapid Set product: plasticizer admixture / for concrete RAPID SET® FLOW CONTROL®. Contact a supplier or the parent company directly to get a quote or to find out a price or your closest point of sale.

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Concrete Waterproofing Admixture & Additive Products

Xypex Additive products, added to the concrete at time of batching, are part of the Xypex concrete waterproofing and protection system and represent one of three different ways to install Xypex Crystalline Technology into concrete.

Introduction to Concrete Admixtures | Engineersdaily

Introduction to Concrete Admixtures ASTM C 125 defines an admixture as a material other than water, aggregates, hydraulic cements, and fiber reinforcement that is used as an ingredient of concrete or mortar and added to the batch immediately before or during mixing.

Ready mix concrete batching plant

Apr 07, 2014 · Ready mix concrete batching plant - business plan 1. Farah Taleb Noor Osman Jihad Hajar 2. TCF is a startup concrete mixer establishment located in the North of Lebanon. TCF is expecting to catch the attention of many clients and contracting companies based on the high quality of the offered product. The Factory is planning to build a strong image and market position in the town. TCF aims to ...

Frequently Asked Questions

If I am trying to reduce my fines in a limestone quarry, should I use a Jaw Crusher instead of a Primary Impactor?

While it is true the Jaw Crusher will create less fines (say, minus 3/16”), it also creates more plus 1-1/2” material to be crushed downstream at the secondary and tertiary stages. Regardless of the type of crushers used downstream, the amount of fines generated in those closed circuit operations will actually be greater than any increase caused by a primary impactor. 

How do the power consumption figures compare between Primary Impactors like the MaxCap and the VersaCap?

Since one employs an expansion chamber over the rotor and the other doesn’t, the MaxCap will perform at ½ hp per ton, while the VersaCap averages ¾ hp per ton. Electric motors will only draw as much power as the crusher needs. However, the theoretical difference in a 500,000-ton quarry or mine is about 90,000 kW/hours. That reflects only the primary crusher, not the added power it takes downstream to also recirculate 30% more rock through the secondary circuit.

Why do I see so many Impact Crushers in concrete recycling when the material is 100% abrasive?

Unlike sedimentary stone, e.g. limestone or sandstone, weathered concrete is very soft and friable. Most concrete pavement is less than 1,500 psi and pre-broken into slabs 2’ to 3’ square.  Due to the friability, they shatter quickly into particles 3” and smaller on the initial pass through the impactor. The hammer wear life tends to be far shorter due to the abrasion, but recirculating loads are minimal for base material. In the case of a mobile contractor, single crusher systems are far more economical when relocating on a regular basis. 

What is the main difference between the VersaCap P-Series and the R-series? Are they both primary impactors?

Yes, they are both primary impactors. In fact, the only real difference is the rotor assembly. The VersaCap P-Series is a primary impactor that accepts 30” boulders in quarried stone, and generates a nominal 6” minus. The VersaCap R-Series uses the same housing, but the rotor is designed specifically for large, highly-friable materials like concrete rubble. In the case of recycling concrete, the R-Series rotor is lighter in weight for portability, and the hammers are thinner, reducing the cost of spent hammers. 

Under what circumstances should I consider automation for adjusting an Impactor?

The MaxCap Primary Impactor comes standard with fingertip control. While not fully automated, it is designed to integrate into any programmable logic controller based system. As for the other impactors, the vast majority of operations will be fine with a simple shim adjustment, which requires no automation. However, the semi-automatic system on the VersaCap and NGS Impactors essentially requires only an electrical control over the hydraulic system, which would be running during operation. Once you find the right setting, and plan to stay consistent, you can add shims, and shut off the hydraulic power unit. If you are anticipating the need to change settings on a regular basis, the full automation system with PLC and touch screen is available and capable of being integrated.