THE FUNCTION OF POLYMER DISPERSION POWDER IN CEMENT … · 2019-09-18 · APFAC 1. Congresso Lisboa...
Transcript of THE FUNCTION OF POLYMER DISPERSION POWDER IN CEMENT … · 2019-09-18 · APFAC 1. Congresso Lisboa...
CREATING TOMORROW'S SOLUTIONS
THE FUNCTION OF POLYMER DISPERSION POWDER IN CEMENT BASED DRY MIX PRODUCTS
Klaus Bonin, LBE T5, 25 November 2005
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 1
INTRODUCTION
Ceramic Tile Adhesive; ETICS; Ceramic Tile Grout; Self LevellingUnderlayment / Overlayment; Plasters; Concrete Repair Mortars; Gypsum trowelling compounds; Sealing slurries and Powder Paints.
Blending organic with inorganic binders such as cement, gypsum, and hydrated lime. After setting it creates final product properties.
While mixing the dry mix formulation with water, the dispersion polymer powder becomes dispersed and after drying it will become water insoluble. This process is not reversible and it’s the reason for the big success of dispersion powders in the world
The dry mix formulation has several advantages like packaging, transport and handling, costs, freeze resistance, resistance to biological attack.
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 2
CONTENT
• POLYMER BASE
• SPRAY DRYING PROCESS, DISPERSION – REDISPERSION
• TYPE OF CERAMIC TILE
• ETICS POLYSTYRENE, EOTA ETAG 04
• MEMBRANE BENEATH CERAMIC TILE
• HYDROPHOBICITY OF PLASTERS
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 3
CONTENT
• POLYMER BASE
• SPRAY DRYING PROCESS, DISPERSION – REDISPERSION
• TYPE OF CERAMIC TILE
• ETICS POLYSTYRENE, EOTA ETAG 04,
• MEMBRANE BENEATH CERAMIC TILE
• HYDROPHOBICITY OF PLASTERS
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 4
VINYLACETATE-ETHYLEN POLYMER BASES
Copolymer of ethylene, TG of -93°C (polyethylene) a nd vinyl-acetate TG of + 33°C (polyvinylacetate). The final TG of the copolymer is controlled by the structure and composition. Ethylene works as an internal plasticizer, there is no need for a plasticizer.
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 5
CONTENT
• POLYMER BASE
• SPRAY DRYING PROCESS, DISPERSION – REDISPERSION
• TYPE OF CERAMIC TILE
• ETICS POLYSTYRENE, EOTA ETAG 04
• MEMBRANE BENEATH CERAMIC TILE
• HYDROPHOBICITY OF PLASTERS
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 6
SPRAY DRYING PROCESS
Dispersion RedispersiblePowder
Redispersion
Drying
Redispersion in Water
ProtectiveColloid
Drying
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 7
DISPERSION – REDISPERSION
RE-DISPERSION
particle concentration particle concentration
92
ppm
92
ppm
69
ppm
particle size in µmparticle size in µm
DISPERSION
particle concentration particle concentration
69
ppm
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 8
CONTENT
• POLYMER BASE
• SPRAY DRYING PROCESS, DISPERSION – REDISPERSION
• TYPE OF CERAMIC TILE
• ETICS POLYSTYRENE, EOTA ETAG 04
• MEMBRANE BENEATH CERAMIC TILE
• HYDROPHOBICITY OF PLASTERS
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 9
ACC TO 12004
0
0,2
0,4
0,6
0,8
1
1,2
1,4
1,6
earthenware tiles stoneware tiles porcelain tiles
N/mm² 0,5% Dispersion Powder 2,0% Dispersion Powder 6,0% Dispersion Powder
Tile WA: acc EN 159 15% acc to EN 178 is < 0.2 % next to 0.0%.
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 10
INTERFACE MORTAR - PORCELAIN TILE
mortar tileScanning electron micrograph of the interface between a dispersion polymer-modified ceramic tile adhesive (left) on a porcelain tile (right).
The polymer films at the interface between the surface of the porcelain tile and the cementitious mortar can be seen clearly.
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 11
CONTENT
• POLYMER BASE
• SPRAY DRYING PROCESS, DISPERSION – REDISPERSION
• TYPE OF CERAMIC TILE
• ETICS POLYSTYRENE, EOTA ETAG 04
• MEMBRANE BENEATH CERAMIC TILE
• HYDROPHOBICITY OF PLASTERS
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 12
100% STYROPOR PULL OUT
EOTA = European Organization for
Technical Approvals
ETAG = European Technical Approval
Guideline
ETAG 04
To save energy
“heating and cooling”
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 13
INTERFACE MORTAR - EPS
Scanning electron micrograph (a = x400; b = x3000, of the interface between a polymer-modified mortar (left side of the picture) on EPS (right side of the picture).
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 14
IMPORTANT REQUIREMENT ETAG 04
without crack formationstandard > 3 Joule, high resistance >10
Joule
Ball-falling-test, impact energy
normal resistancehigh resistance
> 0.25 N/mm²Tensile strength of adhesive on concrete slab
> 0.03 N/mm² (2h) > 0.08 N/mm² (7d)
> 0.08 N/mm²Tensile strength on polystyrene panel
wet (+ drying time befor test; h = hour, d = days) stored in water
dry, standard condition 23°C
and 50% relative humidity
www.eota.be
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 15
VARIATION OF POLYMER CONTENT
66721.5< 0.5J
Impact test in Joule, on 200x200x50mm³ test specimen,
500g steal ball falling test
98958261350%EPS pull out (adhesion failure
within the styropor)
0.130.140.120.110.080.06N/mm²Tensile adhesion strength on
EPS, 12 d sc. / 2 d water
100100927980%EPS pull out (adhesion failure
within the styropor)
0.140.150.140.120.080.05N/mm²
Tensile adhesion strength on EPS 14 days sc. (s.c. =23°C /50%RH)
5 %4 %3 %2 %1 %0 %DPPDispersion polymer powder
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 16
CONTENT
• POLYMER BASE
• SPRAY DRYING PROCESS, DISPERSION – REDISPERSION
• TYPE OF CERAMIC TILE
• ETICS POLYSTYRENE, EOTA ETAG 04
• MEMBRANE BENEATH CERAMIC TILE
• HYDROPHOBICITY OF PLASTERS
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 17
FUNDAMENTAL REQUIREMENTS FOR WATERPROOFING MEMBRANES FOR USE BENEATH CERAMIC TILES ACC. TO EN 14891
> 0.75 mmCrack bridging ability
No penetrationWaterproofing under hydrostatic pressure (1.5bar / 7d)
> 0.5 N/mm²Tensile adhesion strength after contact with lime water
> 0.5 N/mm²Tensile adhesion strength after heat ageing
> 0.5 N/mm²Tensile adhesion strength after water contact
> 0.5 N/mm²Initial tensile adhesion strength
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 18
CRACK BRIDGING ABILITY
0
0,2
0,4
0,6
0,8
1
1,2
1,4
1,6
1,8
28 d sc 14 d sc + 14 d water
11% OPC 20% Dispersion powder 8% OPC 45% Dispersion powdermm
Measurement of elongation in mm, after two different storage condition; 28days standard condition s.c. and after 14 days standard condition plus 14 days water storage, wet measured.
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 19
COMPOSITE TENSILE ADHESION STRENGTH
0
0,5
1
1,5
2
2,5
3
28 d sc 7 d sc + 21 d water 14 d sc + 14 d70°C + 1 d sc
freeze / thaw
11%OPC 20% Dispersion powder 8%OPC 45% Dispersion powder
Adhesion test according to the EN 14891, after different storage condition
Sealing slurry applied directly on the concrete slab. Adhesive applied by a trowel, 30s pressed into the mortar with a 20N weight.
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 20
CONTENT
• POLYMER BASE
• SPRAY DRYING PROCESS, DISPERSION – REDISPERSION
• TYPE OF CERAMIC TILE
• ETICS POLYSTYRENE, EOTA ETAG 04,
• MEMBRANE BENEATH CERAMIC TILE
• HYDROPHOBICITY OF PLASTERS
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 21
HYDROPHOBICITY OF PLASTERS
0
0,5
1
1,5
2
2,5
3
3,5
4
0,5 1 2 3 3,5% hydrophpbic dispersion powder
water absorption coefficent W
21 days norm climate 1 year free weathering 6 years free weathering
Measured according to the DIN 62517 standard. Test specimen was laid out 6 years on the free weathering in Burghausen 60°/south.
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 22
SUMMARY
• Polymer modification brings to the mortar:
• adhesion
• cohesion
• flexibility / elongation
• impact resistance
• durability
• hydrophobicity
APFAC 1. Congresso Lisboa 2005Klaus Bonin, LBE T5, 25 November 2005, Slide 23
Thank you for attention.
Klaus Bonin