MasterFiber - BASF Documents... · 0.6 0.5 0.4 0.3 0.2 0.1 0.0 0 7 14 21 28 35 42 49 56 63 70 77 84...
Transcript of MasterFiber - BASF Documents... · 0.6 0.5 0.4 0.3 0.2 0.1 0.0 0 7 14 21 28 35 42 49 56 63 70 77 84...
MasterFiberSolutions for Alternative Reinforcement
2 MasterFiberSolutions for Alternative Reinforcement
Building on partnership. Our Master Builders Solutions experts find innovative and sustainable solutions to meet your specific construction needs. Our global experience and network help you to be successful – today and tomorrow.
Master Builders SolutionsThe Master Builders Solutions brand brings all of BASF’s expertise together to create chemical solutions for new construction, maintenance, repair and renovation of structures. Master Builders Solutions is built on the experience gained from more than a century in the construction industry.
The know-how and experience of a global community of BASF construction experts form the core of Master Builders Solutions. We combine the right elements from our port folio to solve your specific construction challenges. We collaborate across areas of expertise and regions and draw on the experience gained from countless construction projects worldwide. We leverage global BASF technologies, as well as our in-depth knowledge of local building needs, to develop innovations that help make you more successful and drive sustainable construction.
The comprehensive portfolio under the Master Builders Solutions brand encompasses concrete admixtures, cement additives, chemical solutions for underground construction, waterproofing solutions, sealants, concrete repair and protection solutions, performance grouts, performance flooring solutions.
Master Builders Solutions from BASF
3MasterFiberSolutions for Alternative Reinforcement
Better Performance and Durability Through an Improved Matrix
By design, concrete will crack, because it is a brittle material. As soon as its peak load-carrying capacity is exceeded by internal or external forces, fractures occur. Cracks can limit the durability of concrete, concrete elements can fail and the aesthetic is significantly impeded.
This makes internal reinforcement of the concrete necessary, which diffuses stress and strain and provides the desired ductility to limit the extent of cracking and help the concrete elements to behave like an elastic material.
The experts at Master Builders Solutions have developed a comprehensive range of fibers. For each application a MasterFiber solution exists: these solutions are covered in the selection guide at the end of the brochure.
Regarding effective design, MasterFiber products create a particularly efficient internal reinforcement network in concrete, with or without normal steel mesh reinforcement. MasterFibers have an exceptional combination of properties: they are optimized to have a strength performance with only a small impact on the rheological behavior of fresh concrete.
This matrix is made from an extremely large quantity of distributed fibers, providing the concrete with the following characteristics. It:
Enhances resistance to shrinkage cracking. Helps to prevent concrete spalling
during a fire. Adds fracture resistance to concrete. Enhances the concrete structure’s
mechanical performance.
Instead of using hand-tied rebars, many structures can be reinforced using a MasterFiber solution, with two major advantages:
Safety and cost effectiveness This reinforcement is already integrated into the concrete mix and uniformly dispersed. This eliminates the problem of properly positioning the steel bars, which is a source of costly labour as well as a danger for people on site and for the structure if poor positioning occurs.
Durability and sustainability Compatible with the alkaline environment of the concrete, this reinforcement carries no risk of corrosion and there is no requirement for protective concrete cover. This means that slender and lighter structures can be created, contributing to more sustainable constructions.
Refurbishment of old building with thin facade panel (3 cm thickness) using Very High Performance concrete
reinforced with MasterFiber and outside insulation, iMat project.
4 MasterFiberSolutions for Alternative Reinforcement
Plastic shrinkage is caused by the change in volume that occurs in all fresh cement- based materials after placement when the mixture is still plastic and has not yet achieved any significant strength. If this shrinkage is restrained, cracking may occur.
The MasterFiber matrix is one of the most effective methods to reduce plastic shrinkage cracking. The fibers are interacting due to the build up of a network and thus reduce the shrinkage and stress development. Using a fiber content of just 0.1 % volume reduces the total crack area by 30 to 40 %.
MasterFiber – Enhances Resistance to Shrinkage Cracking
MasterFiber 012 & MasterFiber 018
5MasterFiberSolutions for Alternative Reinforcement
Used in combination with MasterLife SRT, a shrinkage-reducing admixture (SRA), which regulates the surface tension in concrete pores, MasterFiber’s network reduces shrinkage stress and strain without impacting on compressive strength and modulus of elasticity. This system provides an extremely flowable concrete, which is easy to pump and cast. The fibers act on the
way water migrates through the concrete, giving a more uniform moisture profile (typical in slabs and pavement) and offering benefits over the use of steel mesh, which is difficult to position properly. This all adds up to an easily applied solution that saves labour and produces a better quality of finish.
Shrinkage evolution curve with MasterLife SRT
Shr
inka
ge
‰
Sample age (days)
Reference MasterLife SRT 1% MasterLife SRT 2 %
0.6
0.5
0.4
0.3
0.2
0.1
0.00 7 14 21 28 35 42 49 56 63 70 77 84 91
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MasterFiber – Adds FractureToughness to Concrete
Fracture toughness the ability of a material to resist crack propagation starting from a preexisting crack fracture is required in many applications: industrial flooring, traffic components, suspended panels, marine structures and sprayed concrete lining in mines.
In cracked concrete with a high number of optimal-shaped macrofibers, the MasterFiber matrix, which connects the cracked concrete surfaces, carries the additional load by transferring it via the bridged crack into the undamaged concrete sections.
The diffusing effect of the fiber network replaces traditional steel mesh used for crack size control efficiently.
Depending on the application, the optimal MasterFiber structure can be achieved with steel and/or synthetic macrofibers.
Synthetic macrofibers have some advantages:
Significant reduction of wear on equipment. A density similar to water and much less
segregation. No corrosion and no need for corrosion
protection. Better dispersion in concrete due to
good surface properties
In spraying operations, synthetic fibers such as MasterFiber 150 improve concrete mix cohesion and facilitate easy pumpability over long distances.
In cast applications, synthetic macrofibers like MasterFiber 240 provide easy manipulation with good dispersion in normal or self-compacting concrete and increase the safety and durability of the concrete element.
C50 toughness evaluation at different fiber dosage
7
6
5
4
3
2
1
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Str
eng
th (M
Pa)
CMOD (mm)
Stainless steel fibers 30 mm 30 kg / m3
MasterFiber 240 16.6 kg / m3
MasterFiber 240 12 kg / m3
MasterFiber 240 8 kg / m3
00
10
20
30
40
50
Load
(kN
)
MasterFiber 150 – 6 kg / m3
in C30 / 37 sprayed concrete (ASTM C1550)
5 10 15 20 25 30
Ene
rgy
(J)
Displacement
900
800
700
600
500
400
300
200
100
0
MasterFiber 150
MasterFiber 240
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Innovation in engineering design places ever greater emphasis on the use of construction materials that enable the creation of lighter, stronger, safer, more flexible and durable structures that are also cost effective.
The incorporation of high performance fibers increases the tensile, flexural, shear and torsion strengths of concrete, compared to non reinforced concrete, and also brings ductility under compressive solicitation, as encountered in column applications, for instance.
The possibility of reducing concrete thickness by avoiding the corrosion problem associated with the minimum coverage of steel mesh can provide a lighter solution for facade panels with more space for the insulation material in place of the concrete saved.
Our MasterFiber network can offer considerable advantages over traditional solutions such as welded wire mesh:
No need to handle and place steel cages in the moulds
No corrosion risk Allows the design of a new, more efficient
shape Slender and lighter structures can be created With the latest optimized concrete VHPC (Very High Performance Concrete) and MasterFiber 400, new advances in design can be made in structural and architectonic applications.
MasterFiber – Enhancing the Mechanical Performance of Concrete’s Structure
Multi-cracking behavior of fiber reinforced concrete with MasterFiber 4 points bending strength test in LMC laboratory
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9
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3
2
1
0
Load
(kN
)
Fiber-reinforced concrete behavior law under 4 points bending strength test:
first crack
9.117 kN
0 5 10 15 20 25 30 35
Displacement (mm)
Post-crack hardening behavior achieved with 30 kg of MasterFiber 400
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MasterFiber – Protects Concrete Spalling in Fire Conditions
At high temperatures, for instance in the event of fire, the moisture in the concrete turns to steam. As the temperature rises faster than the steam can escape, the growing pressure generates tensile stresses that become too high to be resisted by the concrete, which then spalls in a rather ‘explosive’ manner.
Spalling results in the rapid loss of the surface layers of the concrete during a fire. It exposes the core concrete to fire temperatures, thereby increasing the rate of transmission of heat to
the core concrete and its reinforcement. MasterFiber’s matrix is particularly effective at protecting building structures against concrete spalling. In a fire, the 30 μm diameter mono-filament polypropylene microfibers melt very quickly within the concrete surface, rapidly creating microchannels that can discharge the steam pressure. 1 kg / m3 of fiber content is enough to withstand the most severe fire test (RWS) without having a detrimental effect on the load bearing capacity.
Standard fire curves used in CTRL tests
Tem
per
atur
e (°
C)
Time (m)
1,600
1,400
1,200
1,000
800
600
400
200
00 20 40 60 80 100 120 140 160 180
Rijkswaterstaat RWS
Eurocode 1 Hydrocarbon
ISO 834 Cellulose
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Our ExpertiseBroad Support for all Your Needs
Thanks to their vast experience in mix design formulation, the Master Builders Solutions experts from BASF provide broad support to their customers in finding alternatives to typical steel mesh reinforcement.
In every country, a dedicated, specialist fiber expert is on hand to find suitable tailor-made solutions, taking into account:
A calculation service in association with the engineering team to determine the correct thickness and fiber dosage to suit standard requests.
The concrete mix design, which should have the right consistency and an adapted granular curve to reach the optimal rheology for the required fiber dosage.
The right fiber, chosen from Master Builders Solutions’ comprehensive product range.
Solution
Concrete mix design
Fiberreinforcement
Product design
1
2
3
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MasterFiber 012 & MasterFiber 018 MasterFiber 150
MasterFiber 240 MasterFiber 400
MasterFiber 482 MasterFiber 530
13MasterFiberSolutions for Alternative Reinforcement
MasterFiber – Selection Guide
Mas
terF
iber
1-9
9
Mas
terF
iber
100
-199
Mas
terF
iber
200
-299
Mas
terF
iber
300
-399
Mas
terF
iber
400
-499
Mas
terF
iber
500
-599
Mas
terL
ife S
RT
Plastic shrinkage •
Drying shrinkage • • •
Fire protection•
Toughness in sprayed concrete• •
Toughness in cast concrete• •
Mechanical post-cracking performancein low-medium strength concrete (< C50 / 60)
• •
Mechanical post-cracking performancein high strength concrete (C55 / 67– C100 /115)
• •
Mechanical post-cracking performancein very and ultra high strength concrete (> C100 / 115)
•
Hybride structure made of steel, thin panels and Venetian blind of very high performance concrete reinforced with MasterFiber. R&D project developed by ASCAMM \ iMat – Construction Technologies.
Master Builders Solutions from BASF for the Construction Industry
MasterAirComplete solutions for air entrained concrete
MasterBraceSolutions for concrete strengthening
MasterCastSolutions for the manufactured concrete product industry
MasterCemSolutions for cement manufacture
MasterEmacoSolutions for concrete repair
MasterFinishSolutions for formwork treatment and surface improvement
MasterFlowSolutions for precision grouting
MasterFiberComprehensive solutions for fiber reinforced concrete
MasterGleniumSolutions for high performance concrete
MasterInjectSolutions for concrete injection
MasterKureSolutions for concrete curing
MasterLifeSolutions for enhanced durability
MasterMatrixAdvanced rheology control for concrete
MasterPelSolutions for water tight concrete
MasterPolyheedSolutions for mid-range concrete
MasterPozzolithSolutions for water-reduced concrete
MasterProtectSolutions for concrete protection
MasterRheobuildSolutions for high strength concrete
MasterRocSolutions for underground construction
MasterSealSolutions for waterproofing and sealing
MasterSetSolutions for set control
MasterSureSolutions for extraordinary workability retention
MasterTopSolutions for industrial and commercial floors
Master X-SeedAdvanced accelerator solutions for concrete
UcreteFlooring solutions for harsh environments
The data contained in this publication are based on our current knowledge and experience. They do not constitute the agreed contractual quality of the product and, in view of the many factors that may affect processing and application of our products, do not relieve processors from carrying out their own investigations and tests. The agreed contractual quality of the product at the time of transfer of risk is based solely on the data in the specification data sheet. Any descriptions, drawings, photographs, data, proportions, weights, etc. given in this publication may change without prior information. It is the responsibility of the recipient of our product to ensure that any proprietary rights and existing laws and legislation are observed (02/2014).
® = registered trademark of BASF group in many countries. EEBE 1412en
BASF plc
Construction Chemicals
PO Box 4 Earl Road Cheadle Hulme Cheadle Cheshire SK8 6QG United Kingdom
P +44 (0)161 485 6222 F +44 (0)161 488 5220
www.master-builders-solutions.basf.co.uk
BASF Construction Solutions GmbH
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68199 Mannheim Germany
P +49 (0)621 60 76400 F +49 (0)621 60 93433