Influence of CO2 Laser Radiation on the Mechanical Properties of Portland Cement Pastes
DOI:
https://doi.org/10.3989/mc.2010.54709Keywords:
Portland Cement, Mechanical Properties, Compressive Strength, TemperatureAbstract
This article presents the results of the treatment of fresh cement pastes with CO2 laser radiation (10.6μm), in order to improve its mechanical properties in addition to obtaining lower setting times than those of a natural setting (without radiation .) It was observed that the CO2 laser radiation has a positive influence on the mechanical properties of cement paste, not due to the heat produced during irradiation, but due to the effect of electric field propagation on water molecules, whose are arranged around functional groups of the binder and by the effect of ration, causes a micro vibration effect, resulting in a more compact and less porous paste which has better mechanical properties compared to natural setting paste. The internal and surface temperature of the samples, the evolution of setting, Young's modulus (using ultrasonic pulse velocity) and compressive strength were registered.
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[1] B. Tirumala Rao, Raiz Kumar, A.K. Nath: “Processing of Concretes with a high power CO2 laser”, Opt Laser Technol, Vol. 37, n° 5 (2005), pp. 248-356.
[2] J. Lawrence, L. Li.: “A Comparative study of the surface glaze characteristics of concrete treated with CO2 and high power diode laser Part I: Glaze Characteristics”, Mater Sci Eng, Vol. 284, n° 1 (2000), pp. 93-102.
[3] Miguel Gómez-Heras, Rafael Fort, Miguel Morcillo, Carlos Molpeceres, José Luis Ocaña: “Calentamiento por láser: una técnica mínimamente invasiva para el estudio del calentamiento producido por el fuego en materiales pétreos de construcción”, Mater Construcc, Vol. 58, n° 289-290(2008), pp.
[4] Manu Sharma, Raffaele Resta, and Roberto Car: “Dipolar Correlations and the Dielectric Permittivity of Water”, Physical Review Letters, Vol.98, No. 24(2007), pp. 247401-247404. doi:10.1103/PhysRevLett.98.247401 PMid:17677991
[5] Pier Luigi Silvestrelli and Michele Parrinello: “Water Molecular Dipole in the Gas and in the Liquid Phase”, Physical Review Letters, Vol. 82, No. 16(1999), pp. 3308-3311. doi:10.1103/PhysRevLett.82.3308
[6] Alfredo Pasquarello and Raffaele Resta: “Dynamical monopoles and dipoles in a condensed molecular system: The case of liquid water”, Physical Review B, Vol. 68, No. 17(2003), pp. 174302-1-174302-10.
[7] Serway and Beichner (2002), “Physics Scientist and Engineers” (Sixth Edition), Ed. Mc Graw Hill.
[8] Koichiro Sadakane, Hiroyuki Kitahata and Hideki Seto: “Rhythmic oscillation and dynamic instability of micrometer-size phase separation under continuous photon flux by a focused laser”, Physical Review E, Vol. 78, No. 4(2008), pp. 046214-1-046214-4.
[9] Friedrich-Alexander: “Calculation of the polarizability and hyperpolarizabilities of periodic quasi-one-dimensional systems”, Physical Review B, Vol. 45, No. 19(1992), pp. 10876-10885. doi:10.1103/PhysRevB.45.10876
[10] Nicolas Robeyst, Elke Gruyaert, Christian U. Grosse and Nele De Belie: “Monitoring the setting of concrete containing blast-furnace slag by measuring the ultrasonic p-wave velocity”, Cement Concrete Res, Vol. 38, No. 10 (2008), pp. 1169-1176. doi:10.1016/j.cemconres.2008.04.006
[11] H.K. Lee, K.M. Lee, Y.H. Kim, H. Yim and D. B. Bae: “Ultrasonic in situ monitoring of setting process of high-performance concrete”, Cement Concrete Res, Vol. 34, No. 4(2004), pp. 631-640. doi:10.1016/j.cemconres.2003.10.012
[12] M. Conde García, J.I. Fernández- Golfín Seco, E. Hermoso Prieto: “Mejora de la predicción de La resistencia y rigidez de la madera estructural con el método de ultrasonidos combinado con parámetros de clasificación visual”, Mater Construcc, Vol. 57, n° 288 (2007), pp. 49-59.
[13] S. Bueno, M. G. Hernández, T. Sánchez, J. J. Anaya and C. Baudín: “Nondestructive characterization of alumina/aluminium titanate composites using a micromechanical model and ultrasonic determinations: Part I. Evaluation of the effective elastic constants of aluminium titanate”, Ceramics International, Vol. 34, No. 1(2008), pp. 181-188. doi:10.1016/j.ceramint.2006.09.006
[14] Li Shing Chang and Tung-Han Chuang: “Ultrasonic testing of artificial defects in alumina ceramic”, Ceramics International, Vol. 23, No. 4(1997), pp. 367-373. doi:10.1016/S0272-8842(96)00045-4
[15] NMX-C-414-ONNCCE (2004). “Industria de la Construcción – Cementos hidráulicos – Especificaciones y métodos de prueba”. Norma Mexicana. Organismo Nacional de Normalización y Certificación de la Construcción y Edificación, S.C.
[16] ASTM C305-99e1 (1999). “Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic Consistency”. 2001 ASTM Standards. Vol. 4.01, American Society for Testing and Materials, West Conshohocken, PA, USA.
[17] ASTM C187-98 (1998). “Standard Test Method for Normal Consistency of Hydraulic Cement”. 2001 ASTM Standards. Vol. 4.02, American Society for Testing and Materials, West Conshohocken, PA, USA.
[18] Hewlett P. C. (2001), “Lea’s Chemistry of Cement and Concrete” (Fourth Edition), Butterworth-Heinemann, Oxford, England.
[19] ASTM C191-99 (2001). “Standard Test Method for Time of Setting of Hydraulic Cement by Vicat Needle”. 2001 ASTM Standards. Vol. 4.01, American Society for Testing and Materials, West Conshohocken, PA, USA.
[20] ASTM C597-97 (2001). “Standard Test Method for Pulse Velocity Through Concrete”. 2001 ASTM Standards. Vol. 4.02, American Society for Testing and Materials, West Conshohocken, PA, USA.
[21] Miguel Gómez-Heras, Bernal J. Smith, Rafael Fort: “Surface temperature differences between minerals in crystalline Rocks: Implications for granular disaggregations of granites through termal fatigue”, Geomorphology, Vol. 78, No. 3-4(2006), pp. 236-249. doi:10.1016/j.geomorph.2005.12.013
[22] J.A. Ortiz Lozano, A. Aguado de Cea, L. Agulló Fité, T. García Vicente y M.E. Zermeño de León.: “Estudio experimental sobre la influencia de la temperatura ambiental en la resistencia del hormigón preparado. Bases teóricas”, Mater Construcc, Vol. 58, n° 291 (2008), pp. 7-22.
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