Publications
Gypsum
1. H. Y. Ghorab, M. Wassef and S. H. Abou El Fetouh: Factors Affecting the Solubility of Gypsum. Part 1: The Effect of Lime and Temperature in Different Media, Journal of Chemical Technology and Biotechnology, (1984) 34A, p.464-467.
2. H. Y. Ghorab and S. H. Abou El Fetouh: Factors Affecting the Solubility of Gypsum, II: The Effect of Sodium Hydroxide Under Various Conditions. Journal of Chemical Technology and Biotechnology, (1985) 35A, p.36-40.
C3A/C4AF/gypsum/lime/alkali hydroxide/alkali sulfate
3. H. Y. Ghorab and S. H. Abou El Fetouh: Effect of Gypsum Additions on the Hydration of Tricalcium Aluminate at 30oC. Egyptian Journal of Chemistry, (1986), 29, pp.265-273.
4. H.Y.Ghorab, A. Anter, M.A. Nour El Din: The Hydration of Tricalcium Aluminate Systems in Water and Sodium Sulfate Solution: A Comparative Study. Egyptian Journal of Chemistry, Vol.46, No 3, pp.409-419 (2003).
5. H.Y.Ghorab, A.Anter, S.Thalem, M.Nour El Din: The C3A-Gypsum System in Alkali Sulfate Solutions. CERAMIC SILIKATY (2010), 54(1), pp. 53-59.
6. H.Y. Ghorab, A. Anter and M. A. Nour Eldine: The Hydration of C3A Systems in Water and Sodium Sulfate Solution: A Comparative Study. The 4th Beijing International Symposium on Cement and Concrete, China, (1998), Vol. 1, pp.269-274.
7. H.Y. Ghorab and A. Anter: The Hydration of C3A Systems in Sodium Chloride Solution. Egyptian Journal of Chemistry (2009)
8. H.Y. Ghorab and S. H. Abou El Fetouh: The Role of Sodium Hydroxide in the System C3A-CaSO4-H2O at 30oC, Materials Research Society, Fall Meeting, Boston, USA,(1987), Vol.85., pp.255-260
9. H.Y. Ghorab, S. T. Ahmed and H. M. Ahmed: The Alkali-Cement System. Advances in Cement Research, (1991/1992), Vo.4 No 1, pp.39-46
10. H.Y. Ghorab and S. H. Abou El Fetouh: A New Approach to the Hydration Reaction of Tricalcium Aluminate with Gypsum at 30oC, Part 1: Effect of Lime, Zement Kalk Gips, (1985), 38, pp.267-270.
11. H.Y. Ghorab and S. H. Abou El Fetouh: A New Approach to the hydration Reaction of Tricalcium Aluminate with Gypsum at 30oC. Part 2: Effect of Alkali in Presence of Lime, Zement Kalk Gips, (1985), 6, pp.332-334.
12. H.Y. Ghorab, S. H. Abou El Fetouh and H. M. Ahmed: New Aspect for the Hydration Reaction of Tricalcium Aluminate in Presence of Alite. Zement Kalk Gips. (1988), No 12, p.624-627
13. H.Y. Ghorab and H. M. Ahmed: The Liquid-Solid Interaction in Pure System of Portland Cement, Part 1: The Alite-Gypsum-Water System, Zement Kalk Gips, (1989), No 11, p.581-583.
14. H.Y. Ghorab and H. M. Ahmed: The Liquid-Solid Interaction in Pure System of Portland Cement, Part 2: The Effect of Alite on the Hydration Reaction of C3A with Gypsum, also in the Presence of Lime. Zement Kalk Gips, (1990), Vol.1, p.34-37.
15. H.Y. Ghorab, S. H. Abou El Fetouh and H. M. Ahmed: On the Solubility of Some Silicates, Silicates Industrial ASBL (1990), 11-12. pp.313-316.
16. H.Y. Ghorab, S. H. Abou El Fetouh and L. S. Marusin: Effect of Lime and Alkali on the Hydration Reaction of C3A in Presence of Gypsum. 7th International Conference on Cement Microscopy in Texas, USA, (1985), pp. 232-241
17. H.Y. Ghorab: Sulfate Balance in Pure Ordinary Portland Cement Systems. Ton Industrie Zeitung, (1991), 116 No10, pp.401-403.
18. H.Y.Ghorab: The Hydration of C3A in the Presence of Gypsum. Part 1: The Reaction in Water.. Cement International (2006), Vol. 4, pp. 88-91
18.b H.Y.Ghorab: The Hydration of C3A in the Presence of Gypsum. Part 2: The Reaction in Alkali Sulfate and Alkali Hydroxide.. not published (2006)
19. H.Y. Ghorab: Different Aspects for the Hydration of C3A at Room Temperature. 11th International Congress on the Cement Chemistry. Durban, South Africa, (2003).
20. H.Y. Ghorab and A. A. Abdel Malak: The Hydration Reactions of the Tetracalcium Aluminoferrite in Systems Containing Calcium Sulfate Dihydrate., 13th International Conference on Building Materials (IBAUSIL), Weimar, Germany (1997), Vol.1, pp.10211-10222.
21. H.Y. Ghorab, A. A. Abdel Malak: The Ettringite Formation in the C4AF-Gypsum-Water-System. The 2nd International Symposium on Non-Traditional Cement &Concrete (NTCC). Brno, Czech Republic, (2005), pp.269-276.
Ettringite
22. H. Y. Ghorab, D. Heinz, U. Ludwig, T. Meskendahl und A. Wolter: On the Stability of the Calcium Aluminate Sulfate Hydrates in Pure System and in Cement. 7th International Symposium on the Chemistry of Cement. Paris, France, (1980), Vol. IV, pp. 496-503.
23. H. Y. Ghorab und U. Ludwig: Modellversuche zur Klärung von Schadenursachen an warmbehandelten Betonfertigteilen, Teil I: Zur Stabilitat von Monophasen und Ettringiten, , Ton Industrie Zeitung (1981), 9
24. H. Y. Ghorab and E. A. Kishar: Studies on the Stability of the Calcium Sulfoaluminate Hydrate. Part 1: Effect of Temperature on the Stability of Ettringite in Pure Water. Cement and Concrete Research, (1985), Vol.15, pp.93-99.
25. H.Y. Ghorab and E. A. Kishar: The Stability of the Calcium Sulfoaluminate Hydrates in Aqueous Solution, 8th International Congress on the Chemistry of Cement, Rio De Janeiro, Brazil, (1986), Vol.5, pp.104-109.
26. H.Y. Ghorab: Review on the Ettringite-Monophases Relationships in Pure Ordinary Portland Cement Systems, ACI Spring Convention Concrete and the Environment, Seattle, USA (1997). pp.65-79
27. H.Y. Ghorab, E. A. Kishar and S. H. Abou El Fetouh: Studies on the Stability of the Calcium Sulfoaluminate Hydrates, Part 2: Effect of Alite, Lime and Monocarboaluminate Hydrate. Cement and Concrete Research (1998), Vol. 28, No 1, pp.53-61.
28. H.Y. Ghorab, E. A. Kishar and S. H. Abou El Fetouh: Studies on the Stability of the Calcium Sulfoaluminate Hydrates, Part 3: The Monophases. Cement and Concrete Research (1998), Vol. 28, No 5, p.763-771.
29. H.Y. Ghorab: An Academic View on the Late Sulfate-Ettringite Formation, 14th International Conference on Building Materials (IBAUSIL). Weimar, Germany, (2000), Vol. 1, pp. 10829-10839
30. H.Y.Ghorab: On the Chemistry of the Delayed Ettringite Formation, RILEM TC 186-ISA, Lausanne Switzerland, (2002), pp.65-71
31. H.Y. Ghorab: The Stability of the Calcium Sulfoaluminate Hydrates. The 5th International Symposium on Cement and Concrete., Shanghai, P.R. China, (2002), Vol.1, pp.209-215
32 H.Y. Ghorab: Causes of the Delayed Ettringite Formation. International Symposium Non Traditional Cement & Concrete (NTCC), Brno, Czech Republic (2002), pp.472-480.
33. H.Y. Ghorab, A. M. Zayed, M. R. Mabrouk and A.S. Mohamed: The Ettringite Formation in Sulfate-Deficient Media. Arab Journal of Nuclear Sciences and applications ISSN 1110-0451. Vol 39, No 3 , 2006pp.142-149
34. H.Y. Ghorab, A. M. Zayed, A. S. Mohamed, Y. Abdel Tawab, M. R. Mabrouk and H.E.H. Ahmed: Factors Affecting the Sulfate Expansion in Cement Systems. 12th International Congress on the Chemistry of Cement (ICCC). Montreal, Canada. (2007), TH4-12.4.
35. H.Y. Ghorab, A. M. Zayed, A. S. Mohamed, M. R. Mabrouk: The Formation of the Ettringite from Sulfate Solutions. 12th International Congress on the Chemistry of Cement (ICCC). Montreal, Canada. (2007), W4-09.3
Concrete and durability
37. H. Y. Ghorab and M. S. Hilal: Case Studies on Concrete Damage Caused by Impurity of its Constituent, Alexandria Conference on Structural and Geotechnical Engineering Alexandria (1990), Vol2. p. 477- 486.
38. H. Y. Ghorab, M. S. Hilal and E. A. Kishar: Effect of Mixing and Curing Waters on the Behavior of Cement Pastes and Concrete, Part 1: Microstructure of Cement Pastes and Concrete, Cement and Concrete Research, (1989), 19, p.868-878
39. H. Y. Ghorab, M. S. Hilal and A. Anter: Effect of Mixing and Curing Waters on the Behavior of Cement Pastes and Concrete, Part 2: Properties of Cement Pastes and Concrete, Cement and Concrete Research, (1990) 20, pp.60-72.
40. H. Y. Ghorab: Various Aspects on the Deterioration of Buildings. The 3rd Arab International Conference on Material Science, Alexandria University, (1992), Vol.2, pp.121-131
41. H. Y. Ghorab and A. H. Y. El Bery: The Performance of some Egyptian Calcareous Aggregates in Concrete. International Symposium on New Development in Concrete Science and Technology (DeSCAT 95), Nanjing, China, (1995).
42. H. Y. Ghorab, H. E. H. Ahmed and M. M. Khafaga: The Effect of Heat Treatment on Concrete Expansion, Journal of Material Engineering, Faculty of Engineering, Helwan University, (2000).
43. H.E.H.Ahmed, H.Y.Ghorab, A.N.Salah: Assessment of cracks in deteriorated reinforced concrete pipe racks supporting structure 2000
46. H. Y. Ghorab, H. E. H. Ahmed: The Suitability of Egyptian Aggregates for Concrete Manufacture. The 2nd International Symposium on Non-Traditional Cement &Concrete (NTCC). Brno, Czech Republic, (2005), pp. 470-478. .
47. H. Y. Ghorab: The Microstructure of Concrete Materials. Second International Conference on Application of Traditional and High-Performance Materials in Harsh Environments. American University, Sharjah UAE. (2006), pp. 64.
48. Hanaa Youssef Ghorab:Cement Egypt (3) What do you Know about Concrete Buildings and their Relation to Cement? Faculty of Science Helwan University G&W Science and Engineering Egypt
49. H. Y. Ghorab, A. Tawfik, O. Fadel: Effect of Kaolin and Cement Kiln Bypass Dusts on the Performance of Precast Concrete: Cement Wapno Beton (2015),Vol.4 , pp. 235-243.
Superplasticizer
50. H. Y. Ghorab, H. E. H. Ahmed, A. Taymour and A. Tawfik: Assessment of the Quality of Naphthalene Sulfonated Superplasticizers. The 5th International Symposium on Cement and Concrete, Shanghai, P. R. China, (2002), Vol.1, pp.876-882.
51. H. Y. Ghorab, H. E. H. Ahmed, A. Taymour and A. Tawfik: Performance of Superplasticizer in Concrete: Relation of Spectroscopic and Thermal Characterization of the Superplasticizer to the Concrete Properties. International Colloquium on Structural Engineering, Ain Shams University, (2003).
52. H. Y. Ghorab, H. E. H. Ahmed, A. Taymour and A. Tawfik: On the Performance of Naphthalene Sulfonated Superplasticize., International Symposium Non Traditional Cement & Concrete (NTCC), Brno, Czech Republic, (2002), pp. 194-203
53. H. Y. Ghorab: Compatibility of Cements with Superplasticizers, Workshop on Expansive Reactions, Admixtures and Blended Cement in Relation to Concrete Quality. Faculty of Engineering, Mataria Helwan University, Cairo, (2002)
54. H. Y. Ghorab and Z.G. Abdel All: A Study on the Compatibility between the Cement and Superplasticizers, The 3rd International Symposium on Non-Traditional Cement &Concrete (NTCC), Brno, Czech Republic, (2008), pp.252-262
55. Hanaa Youssef Ghorab, Ihsan M. Kenawi and Ziad G. Abdel All: The Compatibility Between the Superplasticizers and Portland cements Monograph LAP LAMPERT Academic Publishing (978-3-8433-7016-5) 2010.
56. H. Y. Ghorab, I.M. Kenawi, Z. G. Abdel All: Interaction between Cements and Superplasticizers Materiales de Construccion (2012), Vol. 62, 307, pp.359-380
57. H.Y. Ghorab, A.M. Sharaky, A.S. Meawad, H. Salah: The Minislump of the Cement Pastes with Polynapthalene Sulfonate as Indicator for the Slump Behavior of Concrete: Cement Wapno Beton (2015), Vol.3 pp. 162-170
58. H. E.H. Ahmed, H. Y. Ghorab, M. O. R. Alhariria S. Abdel Gawad: Accelerated Curing for Self-Compacting Concrete. Cement Wapno Beton No.4, 2017. pp.282-288
Soil
59. H. Y. Ghorab, A. Anter, H. El Miniawi: Building with Local materials: Stabilized Soil and Industrial Wastes. The 2nd International Symposium on Non-Traditional Cement &Concrete (NTCC), Brno, Czech Republic, (2005), .pp.479-487
60. H. Y. Ghorab, A. Anter, H. El Miniawi: Building with Local materials: Stabilized Soil and Industrial Wastes. Materials and Manufacturing Processes. (2007) 22:157-162.
61.H. Y. Ghorab, A. S. Meawad, W. Mohamed: Factors affecting the stabilization of soil in compressed earth. Egyptian Journal of Applied Sciences Vol.32 (4), 2017.
63. H. Y. Ghorab, A. S. Meawad, A. H. Hassan: Effect of Cement Kiln Bypass Dust on the Performance of Cast Earth. Cement International, 5. 2016
64. Hanaa Youssef Ghorab; Amr Said Meawad; Mehmet Yildirim; Ahmed Hassan Eied
Hassan: Progress Research in Earth Construction: Pourable Earth with Burned Clays and Solid Wastes. African Journal of Science, Technology, Innovation and Development, 2018. https://doi.org/10.1080/20421338.2018.1479141
65. H. Y. Ghorab, A. S. Meawad, A. H. Hassan: Innovation in Earth Construction: Pourable Earth International Conference on Advances in Cement and Concrete Technology in Africa, ACCTA. Tanzania, January (2019).
66. H. Y. Ghorab: Stabilized Soil for Construction Purposes. 1st International Conference Green sustainable industry roads in Egypt. Cairo Egypt. 2018 p 27
67. H. Y. Ghorab, M. S. Ouf: Solid Wastes in Road Construction. 2nd International Conference Green sustainable roads industry in Egypt. Cairo Egypt. 2019
68. H. Y. Ghorab, A. H. E. Hassan, H. El D. H. Ahmed: Stabilization of the Swelling Soil for Earth Construction. Cement Wapno Beton 25 (2020), No 4, 198-207 https://doi.org/10.32047/CWB.2020.25.3.4
69. H. Y. Ghorab, A. H. Hassan. Cement Egypt: Building with Stabilized Soil Using Wastes as Cement Replacement Materials
70. Hanaa Youssef Ghorab, Adel Anter, Hany El Minyawi: Cement Egypt: Building with Local Materials: Stabilized soil and Industrial wastes. Helwan University and G&W Science and Engineering
Thaumasite, Jouravskite
71. H. Y. Ghorab, M. Rizk, D. Herfort, Y. A. Osman: On the Chemistry of Thaumasite Formation. 19. Internationale Baustofftagung. IBAUSIL Weimar, Germany, (2015), Vol.1. pp. 1.1493- 1.1500. Journal Cement and its Applications Vol.1, 2017, pp. 98-105
72. H.Y. Ghorab, M.R. Mabrouk, K.I. Ismail, Y. A. Osman, S. F. Abd Elnaby, K.M.Yousri, H. H. Ahmed, D. Herfort: The Suitability of Portland Limestone Cement for Use in Construction Applications in Egypt; Cement International (2014), No 6, pp. 70-77. 5th International Conference. Non-Traditional Cement & Concrete (NTCC). Brno, Czech Republic; (2014), pp. 63-66.
73. H. Y. Ghorab, M. R. Mabrouk, D. Herfort, Y. A. Osman: Infrared Investigation on Systems Related to the Thaumasite Formation at Room Temperature and 7oC:.Cement.Wapno. Beton (2014), Vol. 4, pp.252-259
74. H. Y. Ghorab, Fouad S. Zahran A. Mohamed Kamal Amr Said Meawad: On the durability of Portland limestone cement: Effect of pH on the thaumasite formation. Housing and Building Research Journal.
http://dx.doi.org/10.1016/j.hbrcj.2017.04.002
75. Hanaa Ghorab, Hossam Ahmed, Ali Shanour, Hamdy Wahdan: The Behavior of Portland Limestone-Calcined Clays Cement at 5°C. Key Engineering Materials ISSN 1013-9826 2018, Vol. 761, 135-143 doi:10.4028/www.scientific.net/KeEM.761.135 6th International Conference. Non-Traditional Cement & Concrete (NTCC). Brno, Czech Republic; (2017).
76. Hanaa Youssef Ghorab, Mohamed Kamal Mohamed, Sahar Kamal Mohamed: Routes of Thaumasite Formation and Ways for its Prevention. Cement Wapno Beton. 25 (2020), 104-114 doi: https://doi.org/10.32047/CWB.2020.25.2.3
77.H. Y. Ghorab, M. Rizk, Y. Abdel Tawab Osman, Ibrahim Mohamed Ali: Chemical Reagents to Prevent the Thaumasite Form of Sulfate Attack. Egypt. J. of Applied Sci. 35 (5) 2020
78. H.Y. Ghorab, M.K. Mohamed, S.K. Mohamed: Comparing the Effects of Jouravskite and Ettringite on the Hydration of the Clinker. Materiales de Construcción Vol. 73, Issue 349, January-March 2023, e303 ISSN-L: 0465-2746 https://doi.org/10.3989/mc.2023.300222
Cement
79. H. Y. Ghorab, M. S. Hilal and S. H. Abou El Fetouh: Assessment of the Quality of Some Egyptian Cements, Symposium Quality and Performance of Cement and Concrete in the Arab World Baghdad, Iraq, (1987), pp.178-191.
80 H. Y. Ghorab, M. Rizk, B. Ibrahim, M. M. Allam: High Belite Cement from Alternative Raw Materials. Materiales de Construccion (2014) Vol.64, 314, pp.
81. Rafik Abbas, Mona Aly, Hanaa.Y. Ghorab: Alkali Activated Clay of Moderate Kaolin Content. Cement Wapno Beton. No 1, 2019. pp. 33-44
82. H.Y. Ghorab, M. Abbas, A. Arafa, H. E. Hassan: Effect of Lithium, Strontium and Barium Carbonates on the Belite Phase Formed at 1200oC. Cement Wapno Beton 28(6) (2023), https://doi.org/10.32047/CWB.2023.28.6.4
Cement replacement materials
83. H. Y. Ghorab, A. M. K. Abdel Alim and O. M. Ahmed: Hardening Characteristics of some Clay Minerals. Zement Kalk Gips, (1991), No.11, p.578-583.
84. H. Y. Ghorab, H. E .H. Ahmed, M. Rawash: Cement Replacement Materials. 17. International Conference on Building Materials (IBAUSIL), Weimar, Germany, (2009), Vol. 2, pp.2-1041
85. A. M. K. Abdelalim, H.Y. Ghorab, G.E. Abdelaziz, M.S. Elsayed: Dealuminated Kaolin as a Cement Replacement Material. Cement Wapno Beton (2010), Vol.3, pp. 132-140.
86 H. Y. Ghorab, H.E.H. Ahmed, A. Tawfik: Metakaolin as a Cement Replacement Material. The 3rd International Symposium on Non-Traditional Cement &Concrete (NTCC), Brno, Czech Republic, (2011), pp. 429-436
87. H.Y. Ghorab, M. Rizk, F. ElDirs. A. M. Abdel Fatah: Egyptian Rice Husk Ash as Cement Replacement Material. Cement Wapno Beton Vol.3, 2016, pp.169-176
88. H. Y. Ghorab, M. Rizk, A. S. Meawad, M. El Sayed: Reporting the Performance of the Rice Straw Ash as Cement Replacement Material. Cement Wapno Beton, No 2, 2018.pp. 107-114.
Durability
89. A. M. K. Abdel Alim and H. Y. Ghorab: The Effect of Bituminous Emulsion on the Sulfate Resistance of Cement Pastes. Cement and Concrete Research, (1991), 21, p.558-562.
90. H. Y. Ghorab, S. A. Abo El Enein, M. O. Shater, M. Hanna and S. H. Tantawi: Effect of Urine on Cement. Egyptian Journal of Chemistry, (1991) Vol.34, No.5, p.435-442
91. H. Y. Ghorab, A. M. K. Abdel Alim, A. Osman and E. H. Mansour: The Performance of Egyptian Blast Furnace Slag Cement in sulfate solutions. International Colloquium on Structural Engineering. Ain Shams University, (1992), Vol 1, pp.369.
92. M.Halaweh, A. Zayed, H.Y.Ghorab: Sulfates and Alkalis in Internal Sulfate Attack.
International Congress "Rehabilitation des Constructions et Development Durable". Alger (2005), Vol.2, pp. 175-181.
Cement hydration product
93. H. Y. Ghorab, S. H. Abou El Fetouh and E. A. Kishar: A Review on the Behavior of some Crystalline Compounds of the Hydrated Portland Cement., 2nd symposium of Crystallography, Cairo (1984).
94. H. Y. Ghorab: The Use of X-Ray Powder Diffraction in the Cement Chemistry. 3rd International School on X-Ray Powdered Diffraction and its Application, Cairo, (1990), S. R1-R8
Recycling
95. م. علاء منير خ،. أد. هناء يوسف غراب ، ك. نبيل غبريال، د. محمد رزق، ك. سيد بدوى، ك. معتز خفاجة: أثر استخدام تراب الأسمنت على تصنيع الاسمنت البورتلاندى العادى. مؤتمر بعنوان برامج اعادة استخدام وتدوير تراب الأسمنت الجانبى. رئاسة مجلس الوزراء ووزارة الدولة لشئون البيئة ، جهاز شئون البيئة، الفرع الاقليمى للقاهرة الكبرى والفيوم (2002)
96. H. Y. Ghorab, A. Mounir, N. Ghabrial, M. Rizk, S. Badawi and M. Khafaga: Reuse of Cement Kiln Bypass Dust in the Manufacture of Ordinary Portland Cement. Polymer-Plastics Technology and Engineering. (2004), Vol.43 (6), pp. 1723-1724.
97. H. Y. Ghorab, M. Rizk, A. Matter and A. A. Salama: Characterization and Recycling of Aluminum Slag. Polymer-Plastics Technology and Engineering. (2004), Vol.43 (6), pp. 1663-1673
98. H. Y. Ghorab and Nabil El Gabri: Bypass dust in the cement industry
تراب الممرات الجانبية فى صناعة الأسمنت .عالم الأسمنت ومواد البناء العدد 60 يونيو(2015)
Historic buildings
99. H. Y. Ghorab, J. Ragai and A. Anter; Surface and Bulk Properties of Ancient Egyptian Mortars. Part 1: X-ray Diffraction Analysis, Cement and Concrete Research (1986), 16, pp.813-822.
100. J. Ragai, H.Y.Ghorab and A. Anter; Surface and Bulk Properties of Ancient Egyptian Mortars. Part II: Absorption and infrared studies. Cement and Concrete Research (1987), Vol.17, pp.12-21.
101. H.Y. Ghorab; Building Materials of Fatimid Mosques in Cairo, 15th International Conference on Building Materials (IBAUSIL), Weimar, Germany,(2003), Vol.1, pp.1-1179-1190.
102. H.Y.Ghorab; Cultural Heritage: Materials and Restoration. Second International Conference on Application of Traditional and High Performance Materials in Harsh Environments. American University Sharjah UAE. (2006), pp.42. .
103. H.Y.Ghorab;Ingy K.Waked;. Analysis of some Monuments of the Islamic Era in Cairo (7th -19th centuries): basic investigations for Restoration Plans. Neue natursteinrestaurierungsergebnisse und messtechnische Erfassungen, (New stone restoration results and measurement techniques). Stuttgart University, Germany, (2008), pp.51-64