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JUNO XP ASCM Archives - Surface Tech

JUNO XP to challenge brutal Colorado winters

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Field test on residential mix paves the way for improved cold weather resistance

Ready-mix providers throughout Colorado face daunting challenges when creating residential concrete placements. Damage caused by freeze-thaw cycles, de-icing salts and excessive use can spell big trouble if the concrete fails to hold up under Colorado’s brutal winters. Homeowners generally hold concrete providers responsible if slabs, driveways, sidewalks and other residential placements don’t last through the first winter without change from shrinkage, cracking or surface deterioration.

JUNO XP’s reputation for increasing toughness and durability convinced one Colorado ready-mix provider to put it to a test. The residential mix specifications, shown in Table 1, required a designed compressive strength of 4,000 psi and 4.5 to 6.5 percent entrained air for freeze-thaw mitigation. It also needed to achieve a slump of four to six inches.

Table 2 details the fresh properties of the mix. Preliminary results show that JUNO XP maintained strength as well as slump and air entrainment properties, even though it reduced the amount of traditional cement in the mix. Moreover, JUNO XP also reduced the ready-mix provider’s cost for the mix, while still meeting specifications for compressive strength of C39 -3, -7, for 28-days. (See Figure 2 for Comparative Strengths.)

“With JUNO XP, we succeeded in setting up a concrete surface that we believe will maintain durability against freeze-thaw and de-icing salt attack,” said Jon Belkowitz, Surface Tech’s chief technical officer for concrete. “JUNO XP also delivered an enhanced concrete finish and improved roadside appeal.” (See Figures 1 and 4 for photo results of shrinkage and moisture loss on the test slabs.)

JUNO XP is an alternative supplementary cementitious material (ASCM) developed by Surface Tech to increase the toughness and durability of concrete, making it stronger and last longer. The Colorado residential test will continue to be monitored over the coming year. Find more information about JUNO XP here. 

Table 1 – Concrete Mix Designs Evaluated

 

Materials

 

3000, EXT, FLT WORK
REF JUNO XP RPL 22% JUNO XP RPL 35%
Lb Per C. Yard

 

HOLCIM Type I-II 432 329 300
Fly Ash F 108 115 101
Juno XP 0 10 17
LGE # 57 / 67 1351 1377 1390
LGE #8 322 348 361
Concrete Sand 1366 1392 1405
Water 245 240 238
(gal Per C. Yard) (29) (29) (28)
Fl Oz Per C. Yard AEA 2.7 2.3 2.1
HRWR 22 18 16

 

Table 2 – Concrete Fresh Properties

 

Materials

4000, EXT, FLT WORK
REF JUNO XP RPL 22% JUNO XP RPL 35%
Unit Weight (pcf) 140.2 139.8 135.6
Air Content (%)  5.1% 5.2% 6.0%
Slump (inches) 4.25 4.50 4.25
Concrete Compressive Strength

Figure 2 – Concrete Compressive Strength

 

Plastic Shrinkage and Cracking from Moisture Loss on the REF Concrete Slab

Figure 1 – Plastic Shrinkage and Cracking from Moisture Loss on the REF Concrete Slab

 

Concrete slab Enhanced with JUNO XP and without Cracks

Figure 4 – Concrete slab Enhanced with JUNO XP and without Cracks

Lehigh Hanson puts JUNO XP to the test

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JUNO XP-enhanced concrete
The folks at Lehigh Hanson know a thing or two about cement and ready-mix concrete. So when they learned about JUNO XP and its ability to partially replace traditional cement in ready mix, they were curious. Would JUNO XP concrete be as workable as a traditional mix? Would it provide the same finish characteristics?

JUNO XP®, is an advanced supplementary cementitious materialJustin Hill, Senior Sales Consultant with Lehigh Hanson, decided it was time to test JUNO XP to see if it could meet the challenge.

“We sponsored two separate field trials at our San Diego/Miramar plant,” he said, “one in November 2018 and another in May 2019.”

To maintain objectivity, he hired a third-party contractor that specialized in flatwork. The assignment:  Compare and analyze how well the JUNO XP mix could close the surface.

Five mixes were put to the test and the contractor found that, even with a 20 percent reduction in traditional cement, the JUNO XP-enhanced concrete maintained excellent workability and was easy to finish. Additionally, the JUNO XP-enhanced concrete maintained important hardened properties necessary for any concrete construction application.

“Both results were promising, and we are continuing our discovery,” said Hill.

As he found out, JUNO XP is an advanced supplementary cementitious material (ASCM) that not only yields a workable concrete, but also reduces the cost without sacrificing performance.

Click here for more information on JUNO XP.

JUNO XP for Concrete

A revolutionary ASCM technology

JUNO XP — an “insurance policy” for Ultra-High Performance Concrete

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Ultra-High Performance Concrete (UHPC) as defined by the American Concrete Institute (ACI) Concrete Terminology and ACI 239 stipulate calls for meeting a compressive strength between 17,000 psi up to 22,000 psi with specified durability, toughness and tensile requirements provided by the inclusion of fibers. However, because of it’s the materials employed high strength, UHPC can be difficult to create and can become brittle and prone to cracking.

Fortunately, recent UHPC testing and real-world applications by Surface Tech are demonstrating that JUNO XP, the company’s proprietary alternative supplementary cementitious material (ASCM), can provide an “insurance policy” against UHPC brittleness and sub-sequent cracking.

“UHPC has so much cement in it you have to go with a low water mix, and that’s where you run into the possibility of cracking at both early and later stages of the concrete,” said Jon Belkowitz, PhD, Surface Tech’s chief technology officer.

JUNO XP has a mechanical impact on fresh concrete that allows for a reduction of cementitious material, while still maintaining the cream needed to allow grey concrete to flow easily into the formwork. Moreover, JUNO XP has also proven it can increase strength and durability.

“It makes UHPC stronger, tougher and last longer at no additional cost,” said Belkowitz, who added the product is showing spectacular results in current UHPC application testing by one of the nation’s premier concrete precasters.

“JUNO XP is decreasing the binder content by 15 to 25 percent without sacrificing fresh or hardened properties.”

Those who specify and work with UPHC should welcome these results and the fact that JUNO XP is easily adoptable and improves standard, higher performance concrete mixes, in addition to UHPC.

“JUNO XP can be considered a ‘toughening agent’ for UHPC,” said Belkowitz, “meaning it can increase the strain on the concrete before failure, or increase the energy under stress. This positively affects the strain curve as opposed to other supplementary materials, which tends to make the concrete more brittle at high strengths.”

As numerous tests and real-world applications continue to demonstrate that JUNO XP delivers a revolutionary advancement in concrete solutions, it leads Belkowitz to issue his best advice:  “Start using Juno XP today! It’s flipping awesome!”

JUNO XP

ASCM — an acronym for the future of concrete

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JUNO XP

Acronyms. They’re everywhere. Each industry has plenty, and even our text language is well populated with LOL, OMG and a long list of others. So you may groan a bit when you see a new one, but ASCM for the concrete industry is one you’ll definitely want to know and remember.

Alternative supplementary cementitious materials (ASCM) are making waves within the industry, and for good reasons. One, they can partially replace traditional cement in a wide range of concrete mixes. This is good news for the environment, because the production of traditional cement requires enormous amounts of energy and releases CO2 into the air.

JUNO XPTwo, ASCMs have the capability to deliver important improvements to concrete mixtures. They can increase strength and lifespan, improve workability in placement and require less water, while still delivering the creaminess required for most concrete mixes.

Third, to the delight of many, ASCMs can reduce the cost of concrete. And when you combine the cost savings benefit with added strength that provides improved resistance to abrasion, salts and acidic environments, it’s no wonder attention to ASCMs has grown over the past few years.

ASCMS such as silica and fly ash have been around for a while. But these materials do not address all of the shortcomings of Portland cement in certain applications and environments.

That’s why Surface Tech developed JUNO XP, an advanced mineral admixture that can partially substitute traditional cement. It can be used in standard concretes and in specialty applications without sacrificing performance.

The core technology found in Surface Tech’s JUNO XP is a revolutionary building material using cutting-edge advancements in mineralogy and nanotechnology combined with a graduated fiber matrix to reduce material cost.

Best of all, adding JUNO XP to your mix is easy. You can add it at any point in the production process—at the plant, on the job site, or wherever it fits your need.

So now that you know about ACSM, all you really need to remember is JUNO XP. For more information on how JUNO XP can lower cost and improve performance in projects like soil stabilization, controlled density fill (CDF) and rip-rap, visit https://www.surface-tech.com/portfolio/juno/. To find out how you can achieve savings of up to 30 percent on your next project, contact us.

Discover Surface Tech at the TRB Annual Meeting at Booth #1133

By | Asphalt, Concrete | No Comments

Innovative products that deliver better, stronger, longer-lasting building materials 

Transportation Research Board (TRB) 98th Annual MeetingIt’s almost here! The Transportation Research Board (TRB) 98th Annual Meeting will convene next week in Washington, DC.  We’ll be there, and we invite everyone to drop by our booth to learn how Surface Tech products can deliver significant benefits to your next concrete or asphalt project.

Our innovative ACE XP polymer fiber solution can make asphalt stronger than steel. JUNO XP, our alternative supplementary cementitious material (ASCM), utilizes cutting-edge advancements in mineralogy and pozzolans to improve the performance of concrete at a microscopic level. Stop by and learn more.

You can also discover more about our products by attending Surface Tech’s TRB Live! Theater. Be sure to mark our presentations on your meeting calendar:

Monday, January 14th – 9:30 a.m.
What is an ASCM and why do we care?
Jon Belkowitz, PhD, Chief Technology Officer, Surface Tech
advanced supplementary cementitious materialPortland cement concrete already incorporates a wide range of supplementary cementitious materials, including fly ash from coal combustion, and silica. However, these materials do not address all of the shortcomings of Portland cement in certain applications and environments. Alternative supplementary cementitious materials hold the promise of increasing the strength of concrete, requiring less water in the mix, improving workability and producing a concrete that’s less brittle. Surface Tech has been at the forefront of alternative binder technology since 2016. Come learn about JUNO XP. We are seeing spectacular potential for this product as an alternative supplementary cementitious material. We’ll explain how it can reduce cost and increase strength of traditional concrete in your next project.

 


Tuesday, January 15th
 12:30 p.m.
The ideal asphalt cracking performance test — what is it?
Joe Dennis, Vice President & Chief Technical Officer, Surface Tech
Phil Blankenship, PE, BLANKENSHIP ASPHALT TECH AND TRAINING, PLLC
ACE XP Polymer FiberASCE recently gave U.S. roadways a dismal “grade D+.” One main reason for this poor performance is the premature cracking of asphalt pavements. This presentation will review a variety of cracking performance tests currently available, providing the strengths and weaknesses of each — including a review of the newest crack performance test called the IDEAL CT crack test. Since the availability of asphalt crack improving modifier options is limited, the presentation will also provide an overview of the capabilities of aramid polymer fibers to decrease this premature cracking of asphalt pavements.

 

ACE XP Polymer Fiber adds strength to asphalt pavement in all directions. PROVEN IN THE FIELD. DOWNLOAD THE TEST RESULTS.