This polypropylene fiber to fire
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First, the construction of polypropylene fiber product description
Polypropylene fiber for building Product introduction:
"Silk edge" brand modified polypropylene fiber is Jiangsu Silk Edge Fiber Co., Ltd. integrated development of organic fibers dedicated to construction, the product is the use of anti-static and anti-aging and other special process, from the polypropylene pellets added It can effectively improve the bond strength between fiber and base material. It can be used in mortar / concrete to prevent, reduce and delay the plasticity of the early stage of the mortar / concrete. Cracking, greatly improve the overall performance of mortar / concrete.
Polypropylene fiber parameters and performance:
◆ Diameter μm: 18-50
◆ Length mm: 3,6,9,12,16,18,20
◆ breaking strength MPa:> 400
◆ Density g / cm3: 0.91
◆ Initial modulus GPa:> 3.5
◆ elongation at break%: 15-35
◆ melting point ℃: about 160
◆ ignition point ℃: about 580
◆ acid resistance: high
◆ Safety: non-toxic, no stimulation
◆ Alkali resistance: very high
◆ thermal conductivity: very low
◆ anti-low temperature: good
◆ Magnetic: None
"Silk edge" brand modified polypropylene fiber cross-section for the three-leaf or round, high alkali resistance, chemical stability, excellent dispersion in mortar / concrete, strong grip strength, per cubic Tens of millions of fibers within the meters were three-dimensional random distribution in the concrete, concrete in the play a purely physical reinforcement.
Construction of polypropylene fiber role:
As the secondary reinforcing material of concrete, the modified silk fiber can greatly improve its anti-cracking, anti-seepage, anti-shock, anti-frost, anti-abrasion, anti-cracking performance, Pumping, water retention.
Applications:
Water conservancy and hydropower projects, cast-in-place concrete and precast components, municipal, highway, bridges, housing construction, industrial production of premixed mortar.
Packing:
Basic package 0.9kg / bag or 1.0kg / bag. According to user requirements to provide the best packaging specifications.
Second, the construction of polypropylene fiber to use the title
"Fibre edge" fiber used in concrete
1, the proposed addition of hspace = 0
Per cubic meter of concrete is recommended to join 12-19mm fiber 0.6-1.8kg, the original mix of concrete unchanged. (for reference)
2, the use of methods
According to the requirements of the project to choose a different content, given the amount of added in the range, the higher the amount of cracking the better, "silk edge" fiber in the concrete from the physical reinforcement, the fiber itself is inert material, Does not react with other concrete components and admixtures, fiber blending does not change the original concrete mix, the performance of various aggregate no special requirements.
① order and methods of feeding
When using fiber and sand, stone and other aggregates at the same time to join, add water, wet mix can be
It is best to add the sand stone material at the same time put the fiber in the middle of sand and gravel material, the effect will be better.
② fiber concrete mixing
Mixing time than without fiber concrete mixing time is slightly longer 30-60 seconds, to ensure that the fiber can be mixed in concrete uniform. (High dispersion products in the commercial concrete temporarily without extending the stirring time)
3, slump adjustment
As the fiber thickening effect makes the addition of fiber will increase the viscosity of concrete mix, so that a slight decrease in slump. Each project requires different slump, so the project before the adoption of experimental regulation of slump, if the slump can not meet the construction requirements, should not be used to increase the amount of water to improve slump, but should be appropriate to use plasticizer or Water reducing agent to improve the slump to meet the construction requirements.
4, the strength of the test
The addition of fiber does not affect the strength of the concrete, but should be in each project before the use of the provisions of the specified concrete mix ratio of fiber reinforced concrete strength test.
5, to work pressure surface
Concrete can be carried out after a pressure surface, to be completed before the end of the initial coagulation of secondary pressure surface, the pressure surface should try to use steel or iron trowel, wood is not smooth enough to hook out the fiber.
6, surface type and conservation
There is no special requirement for the concrete mixed with the "Silk Fibers" fiber, but the concrete should be fully vibrated.
Concrete with "Sibi" fibers can be cured without any special requirements. It can not be carried out by normal concrete, and the early curing of concrete can not be loosened by incorporation of "Silk Fringe" fibers.
7, Description
"Fibre edge" fiber only as a secondary reinforcement of concrete, the main role is to inhibit the production of concrete cracks, improve the impermeability of concrete matrix to extend the service life of concrete, rather than the main structure of reinforced steel.
Therefore, the incorporation of "silk-rim" fibers did not change the reinforcement ratio in the original design.
Third, the "silk edge" fiber used in mortar
Mortar as a construction material in the actual construction process often have some shortcomings: brittle, dry shrinkage, low tensile strength, low deformation and poor impact resistance, so that mortar products prone to cracks, thereby reducing the durability of the building .
(PP) fiber, with special production technology and surface treatment, the cross section is three-leaf (Y) type, the mechanical properties of fine (PP) fiber, with the special requirements of scientific research and development of a new generation of organic fibers, , Mixed with mortar, showing a uniform three-dimensional chaotic distribution, dispersion is very high, and the mortar's grip strong, can prevent, reduce and delay due to creep, plastic shrinkage, shrinkage, chemical shrinkage, temperature and load And other factors caused by micro-cracks, thereby significantly improving the mortar cracking products, impermeability, so that mortar integrity, flexibility, continuity and durability can be improved.
It is widely used in the mortar because it has no special equipment, no need to change the composition of the mortar, convenient construction and operation, little cost increase, no pollution to the environment.
1, the proposed amount of added
Per cubic meter of mortar recommended to add 6-10mm fiber 0.9-1.2kg. Dosage according to the requirements of the project to choose a different content, given the amount of added in the previous range, the higher the better the amount of cracking effect.
2, the order and methods of feeding
① dry mix
When used, add part of the sand, cement, adding "silk edge" fiber, to ensure that the fiber evenly in the cement, sand, and then add the remaining cement and sand, mixing time in the fiber evenly dispersed in the mortar prevail.
② wet mix
When used, add part of the sand to the mixer, add "Silk Fringe" fiber to the mixer to ensure the fibers fall into the cement and sand, and then add the remaining cement, sand and water, the mixing time is evenly dispersed in the mortar quasi.
3, mixing time
Mixer is best to use forced mixer;
For dry mixing, mixing time than without fiber lengthening about 1 minute;
For wet mixing, mixing time than the fiber without mortar for about 30 seconds.
4, Description
In order to ensure that the fibers in the mortar mixed evenly, to ensure that each tank of mortar mixing time.
If you can not meet the above methods of use or mixing difficulties, please seek technical advice to our company or to the relevant professional advice.
Fourth, the "Silk Fringe" fiber use precautions
Can only be used as a secondary reinforcement, can not replace the structural strengthening materials (such as reinforcing steel), not alone used to solve the settlement and by a strong external impact cracking of the occasion, not because of the use of fiber to reduce the size of the main structure, Fiber construction and conservation still in strict accordance with relevant state regulations and practices.
Fifth, the "Silk Fringe" fiber storage conditions
To prevent prolonged exposure to sunlight.
Silk products
Jiangsu Silk Fiber Co., Ltd. mainly produces fiber, polypropylene fiber, polyacrylonitrile fiber, wood fiber, polyester fiber, lignin fiber, cellulose fiber, polypropylene mesh fiber, wall fiber, high strength polypropylene High-strength polypropylene fiber, high-strength polypropylene fiber, polypropylene fiber line, colorful wall clothing fiber, concrete-specific polyacrylonitrile fiber, anti-rutting agent, sewing thread, needlework, twisted wire, high-strength polypropylene twist silk, Edge line, FIBC line, tied note line, kite line, shoe materials line, ball line, polyester staple fiber line.
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Spike many products! This silk fiber to the fire
