Oleochemicals important additives for building protection

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Candice Atkinson
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1 Oleochemicals important additives for building protection 1/27 HS

2 1. INTRODUCTION 1. Introduction Why is the production of highquality building material so important? maintain of value increase of the added value protection of the environment protection of human health Water is the most common cause of serious damages. 1/27 Dr. Stolz Folie 2

3 2. WATER ABSORPTION OF BUILDING MATERIALS The water uptake coefficient is defined as the slope of the first stage of the cumulative inflow curve as a function of square root of time W = w * t water uptake W = water absorption [kg/m 2 ] 8 7 w = water absorption coefficient [kg/m 2 h,5 ] t = time [h] kg/m w cap 1. part w kg/m 2 h,5 2. part h,5 The first part of the curve describe the capillary dominated part The second one is influenced by contribution of air in water 1/27 Dr. Stolz Folie 3

4 3. CHEMISTRY AND PROPERTIES OF OLEOCHEMICALS Direct hydrophobic effect Metal soaps CaO Indirect hydrophobic effect sodium salts of unsaturated fatty acids Combined products Mixture of metall soaps and oleates CaO fast hydrophobic effect price advantage longer mixing time required higher dosage short mixing time delayed hydrophobic effect lower dosage combination of both 1/27 Dr. Stolz Folie 4

5 Direct hydrophobic effect Metal soaps CaO Indirect hydrophobic effect sodium salts of unsaturated fatty CaO product bulk density [g/l] acids 3. CHEMISTRY AND PROPERTIES OF OLEOCHEMICALS 6 Quality-Standards 5 for sodium salts good water-solubility 4 3 easily transfer into Ca-Soaps 2 favoured product: sodium oleate 1 preferred base: Oleic acid produced by precipitation direct conversion rape-oil or mixed oil fatty acid are less capable sieve residue >45µ [%] specific surface [m 2 /g] adsorption of water w 24 [kg/(m 2 h,5 )] Zinc stearate (ind.) 16 2,8 12,12 Zinc stearate (direct) 28,8 9,88 1/27 Dr. Stolz Folie 5

6 Plaster water repellent agents - properties Standard render: Componet [%] Binder: Cement: CEM I 42,5 R 15. White hydrated lime: CL 8 3. Aggregate Limestonemeal 12. Limestonesand,5 4. Limestonesand,5 1,25 3. other additives: Methylhydroxyethylcellulose.1 Starch ether.1 Air entraining agent.2 Hydrophobing agent: Air Entrainment/ Water addition [%] Air Entrainment/ Water addition [%] LIGA ZINKSTEARAT ,2,4,6,8 1 1,2 Conc [%] LIGA NATRIUMOLEAT LP Air entrainment addition Water addition of water W 24 W24 Air LP entrainment Water addition addition of w ater W 24 W24 1,5 1,5,2,4,6,8 1 1,2 Conc [%] 2 1,5 1,5 w24 [kg/(m2 h,5)] w24 [kg/(m2 h,5)] 1/27 Dr. Stolz Folie 6

7 Plaster concentration of the water repellent agents w24 [kg/(m2 h,5)] W 24 1,9,8,7,6,5,4,3,2,1 comparison of the water repellent agents ZN 11 NaOl 9 NF 5 CN5 ZN 51,2,4,6,8 1 1,2 concentration [%] 1/27 Dr. Stolz Folie 7

8 Plaster Zinc Stearte with additive Air Entrainment/ Water addition [%] ZN 51 LP Air [Vol entrainment %] Water [%] Water addition,2,4,6,8 1 1,2 concentration [%] W24[kg/(m2h,5)] W ,8 1,6 1,4 1,2 1,8,6,4,2 w24 [kg/(m2 h,5)] 1/27 Dr. Stolz Folie 8

9 5. Applications Plaster long time results Adsorption of water of a commercial water repellent plaster after five to eight years outdoor weathering sample wall orientation w average,6, west wall plaster after 5 years,8,8,8,8,4,3, west wall plaster after 8 years,13,1,11,9, west wall 5 years west wall 8 years east wall 5 years east wall plaster after 5 years,14,15,15,15 1/27 Dr. Stolz Folie 9

10 water repellent agent application rules metallic soaps are mainly used in finish coatings, concentration,3-,8 % metallic soaps have minor interactions with other raw materials of the recipes metallic soaps show no significant influence on the hydration behaviour of cement sodium oleate is advantageous in base renders, concentration,1-,5 % sodium oleate shows delayed formation of the water repellent effect sodium oleate shows interaction with air-entraining agents and cellulose the content of the air void decreases sodium oleate acts as a plasticizer the time of the dry mixing is less critical no creaming combined products are universal hydrophobic agents the influence of the content of air voids is in between sodium oleate and metallic soaps 1/27 Dr. Stolz Folie 1

11 Typical formulations Raw materials Parts per weight Scratching plaster Rubbing plaster White Cement 7, 1, Hydrated lime 14, 12, Lime stone sand 46,47 61,96 Quarts sand 32, 15, Cellulose ether,2,2 LIGA ZINKSTEARAT 11,5,4 Air entraining agent,1,2 Dispersible powder,,5 1, 1, 1/27 Dr. Stolz Folie 11

12 Raw materials Parts per weight Isulating render Cement CEM I 6, Hydrated lime 18,99 Lime stone sand 1, Cellulose ether,2 LIGA ZINKSTEARAT 11,8 Air entraining agent,1 EPS 1, 1, Raw materials Parts per weight Reinforcing render for isolating systems Cement CEM I 35, Lime stone sand 2, Quarts sand 41,26 Cellulose ether,2 LIGAPHOB NF 5,5 Air entraining agent,4 Dispersible powder 3, 1, 1/27 Dr. Stolz Folie 12

13 Raw materials Parts per weight Facing masonry mortar Cement CEM I 15, Flue ash 5, Quarts sand 79,75 LIGA NATRIUMOLEAT 9 %,1 Air entraining agent,15 1, Raw materials Parts per weight Lime cement Cement plaster plaster Cement 1, 2, Hydrated lime 5, 2, Lime stone sand,1 1,3 7, 7, Quarts sand 14,38 7,67 Cellulose ether,1,1 LIGA ZINKSTEARAT 11,5,1 LIGA NATRIUMOLEAT 9 %,,1 Air entraining agent,2,3 1, 1, 1/27 Dr. Stolz Folie 13

14 Raw materials Parts per weight Repair plaster Cement 12, Hydrated lime 4, Lime stone sand,1 1,3 65, Quarts sand 18,34 Cellulose ether,1 LIGAPHOB CN 75,5 Air entraining agent,6 1, 1/27 Dr. Stolz Folie 14

15 Thank you for your attention! 1/27 Dr. Stolz Folie 15

AGRANA STARCH CONSTRUCTION CHEMICALS AND ADDITIVES

AGRANA STARCH CONSTRUCTION CHEMICALS AND ADDITIVES AGRANA STARCH AGRANA STARCH is a wholly owned subsidiary of the AGRANA Holding AG, the holding company of the Austrian sugar and starch industry. The