Transcription

1

2

3

4

5

6

7

8

9 Relative Humidity Weight Time

10 Relative Humidity Weight Time

11 Temperature Weight Time

12

13

14

15

16

17

18 Moisture Pickup mg/10g Change In Mass (%) - Dry Moisture Uptake of Choline Bitartrate* Date: 07 Dec 2001 Time: 4:14 pm File: ricestarch071201_reduced.xls Sample: rice starch DVS Change In Mass dm - dry Targ Days Stored at 50% RH minutes -5 Time/mins DVS - The Sorption Solution

19 Mass uptake Mass uptake Relative humidity (RH) Relative humidity (RH)

20

21

22

23 Change In Mass (%) - Dry Target RH (%) Date: 07 Dec 2001 Time: 4:14 pm File: ricestarch071201_reduced.xls Sample: rice starch 25 DVS Change In Mass (dry) Plot dm - dry Target RH Temp: 24.8 C Meth: duncan.sao M(0): DVS - The Sorption Solution Time/mins Surface Measurement Systems Ltd UK

24 Change In Mass (%) - Dry Date: 07 Dec 2001 Time: 4:14 pm File: ricestarch071201_reduced.xls Sample: rice starch 25 DVS Isotherm Plot Cycle 1 Sorp Cycle 1 Desorp Temp: 24.8 C Meth: duncan.sao M(0): Desorption Sorption Hysteresis Point: from last 3-5 datapoints of each humidity step DVS - The Sorption Solution Back to 0 reversible Target RH (%) Surface Measurement Systems Ltd UK

25

26 Measuring the Moisture Sorption Kinetics of Cements using DVS

27 E. Dubina, L. Wadsö, J. Plank

28 E. Dubina, L. Wadsö, J. Plank

29 E. Dubina, L. Wadsö, J. Plank

30 E. Dubina, L. Wadsö, J. Plank

31 E. Dubina, L. Wadsö, J. Plank

32 E. Dubina, L. Wadsö, J. Plank

33 E. Dubina, L. Wadsö, J. Plank

34 E. Dubina, L. Wadsö, J. Plank

35 E. Dubina, L. Wadsö, J. Plank

36 Daman K. Panesar, James Francis

37 Daman K. Panesar, James Francis

38 Daman K. Panesar, James Francis

39 Elina Dubina, Johann Plank, Leon Black, Lars Wadsö

40 Elina Dubina, Johann Plank, Leon Black, Lars Wadsö

41 Elina Dubina, Johann Plank, Leon Black, Lars Wadsö

42 Left: Abbey Mill without flooding; right: during flooding Source: Poster by Yasemin Didem Aktas (in Parnassus Int l Workshop 2013) investigating the moisture ingress properties of used building materials in a heritage structure is particularly important for the restoration materials needed to carry out repairs and remedial measures. Compatibility of old and new materials is desired. Characterizing the Restoration Materials for Historic Buildings Using Dynamic Vapour Sorption Technique.

43 Characterizing the Restoration Materials for Historic Buildings Using Dynamic Vapour Sorption Technique.

44 Characterizing the Restoration Materials for Historic Buildings Using Dynamic Vapour Sorption Technique.

45

46 Change In Mass (%) - Ref Target RH (%) DVS Change In Mass (ref) Plot Hemp vs Hemp Lime hemp lime run 1 - Mon 20 Jul dm - dry hemp shiv run 3 - Tue 04 Aug dm - dry 35 hemp lime run 1 - Mon 20 Jul Target RH hemp shiv run 3 - Tue 04 Aug Target RH DVS - The Sorption Solution Time/mins Surface Measurement Systems Ltd UK

47 Change In Mass (%) - Ref DVS Isotherm Plot 35 hemp shiv run 3 - Tue 04 Aug (2) Cycle 1 Sorp hemp lime run 1 - Mon 20 Jul (2) Cycle 1 Sorp hemp shiv run 3 - Tue 04 Aug (2) Cycle 1 Desorp hemp lime run 1 - Mon 20 Jul (2) Cycle 1 Desorp DVS - The Sorption Solution Target RH (%) Surface Measurement Systems Ltd UK

48 Change In Mass (%) - Dry Change In Mass (%) - Dry DVS Isotherm Plot Temp: 25.0 C DVS Isotherm Plot Temp: 24.9 C Glass Fiber Sorp Glass Desorp Plain Sorp Plain Desorp Bilayer Sorp Bilayer Desorp DVS - The Sorption Solution Target % RH Surface Measurement Systems Ltd UK DVS - The Sorption Solution Target RH (%) Surface Measurement Systems Ltd UK Vapour Sorption Properties of Building Materials using Gravimetric Sorption Instrumentation - an Overview.

49 K. Svennberg, L Wadsö. Sorption Isotherms for Textile Fabrics, Foam and Batting used in the indoor Environment.

50 K. Svennberg, L Wadsö. Sorption Isotherms for Textile Fabrics, Foam and Batting used in the indoor Environment.

51 K. Svennberg, L Wadsö. Sorption Isotherms for Textile Fabrics, Foam and Batting used in the indoor Environment.

52 Callum A. S. Hill et al..the Water Vapor Sorption Behaviour of Natural Fibers.

53 Callum A. S. Hill et al. The Water Vapor Sorption Behavior of Natural Fibers.

54 Vapour Sorption Properties of Building Materials using Gravimetric Sorption Instrumentation - an Overview.

55 Yanjun Xie, et al. Water Vapour Sorption Kinetics of Wood Modified with Glutaraldehyde..

56

57 Nele Defoirdt, Soetkin Gardin, Joris Van Acker, Moisture behaviour and biological durability of wood polymer composites.

58 Nele Defoirdt, Soetkin Gardin, Joris Van Acker, Moisture behaviour and biological durability of wood polymer composites.

59 Nele Defoirdt, Soetkin Gardin, Joris Van Acker, Moisture behaviour and biological durability of wood polymer composites.

60 Nele Defoirdt, Soetkin Gardin, Joris Van Acker, Moisture behaviour and biological durability of wood polymer composites.

61

62 Crystalline Partially Amorphous Amorphous

63

64

65

66 Change In Mass (%) - Dry Target RH (%) Date: 05 Dec 2002 Time: 11:58 am File: lactoseramp900.XLS Sample: amorphous lactose 14 DVS Change In Mass (dry) Plot % Change in Mass Target RH Temp: 25.1 C Meth: lactoseramp min.sao M(0): Time/mins Surface Measurement Systems Ltd Determining the Moisture-Induced Glass Transition in an Amorphous Pharmaceutical Material.

67 Humidity at Glass Transition (%RH) Glass Transition Humidity (Tg RH) versus Humidity Ramping Rate y = 1.155x R 2 = Glass Transition (%RH) Linear (Glass Transition (%RH)) Ramping Rate (%RH/hour) Determining the Moisture-Induced Glass Transition in an Amorphous Pharmaceutical Material.

68 Time/mins Relative Humidity (%) Change in Mass (%) 10

69 Change In Mass (%)-Dry Relative pressure Acetone (%) mass Target relative pressure Time/mins

70

71

72 Cell opening Upper O ring Cell Lid Test Specimen Lower O ring Cell Cup Drying Agent i.e. Zeolite, Silica Gel

73 Opening for Diffusion Cell Lid O Rings Cell Cup

74 Temperature & RH controlled environment 0%RH 100%RH (a) (b)

75 Vapour Permeability of Porous Materials using Payne Diffusion Cell.

76 Sample Diffusion rate [mg/min] Water vapour flux [g/(hr.m 2 )] Polyurethane ± ± Silicone ± ± 3.76 Vapour Permeability of Porous Materials using Payne Diffusion Cell.

77 Change In Mass (% w/dry w) %RH 80 %RH 50 %RH 30 %RH Time (min) Poly ε-caprolactone Vapour Permeability of Porous Materials using Payne Diffusion Cell.

78 Determination of Surface Energetics of Mineral Aggregates by Dynamic Vapour Sorption.

79 Determination of Surface Energetics of Mineral Aggregates by Dynamic Vapour Sorption.

80 Determination of Surface Energetics of Mineral Aggregates by Dynamic Vapour Sorption.

81

82 The ability to use organic vapours opens other applications for the DVS technique with building material. The DVS-Advantage instrument also has the ability to couple in-situ spectroscopy (Raman and/or Near-IR) with the gravimetric sorption measurements. This can elucidate more subtle structural changes in the material (i.e. polymer rearrangement, hydrate formation, polymorph identification or hydrogen bonding). The DVS-Advantage can also couple an in-situ video microscopy. This allows for the investigation of vapour-induced colour change, swelling or phase changes.

83 The DVS Technique is a very fast one compared to older gravimetric methods The DVS obtains very accurate and reliable results It is suitable to study many types of materials, not only building materials Obtains easily sorption and desorption isotherms Can be used to study other phenomena, like permeability, diffusion and phase transitions Can simulate real-world conditions.

84 Relative Humidity Weight Time