In this paper, we evaluate different gypsum coating additives that are available on the market, which are categorized by their chemical bases. The results will serve as a reference for future investigations of new additive bases in order to improve the properties of gypsum. As such, the objective of the this study is to assess the workability, mechanical behavior, and crystalline structure of calcium sulfate combined with different retarding and fluidifying bases, including melamine bases, which have a compressive strength of 19.32 N/mm2 and handling times with polycarbonate salts of up to 117.58 min. The following study presents the results of standard mechanical tests, analyzing semi-hydrated calcium sulfate (without additives) as a reference, along with the addition of melamines, synthetic melanin polymers, polycarbonate salts, polycarboxylates, and a polycarboxylic acid (citric acid). We already know that the addition of these additives will modify the mechanical properties of calcium sulfate, such as the Shore C surface hardness, flexural strength, modulus of elasticity, and compression resistance, which is the object of this study.

Gypsum-based interior coatings are used due to their excellent fire resistance and thermal and acoustic properties. In recent decades, the development of these calcium sulfate-based coatings has been linked with the use of new additives that allow the setting times and the water content of the mix to be controlled and offer the possibility of adding different aggregates to the mortar, which further improve its resistance properties. In this article, significant results are presented that compare the flexural strength of mortars formed using added construction plaster with different percentages of graphene powder.

The study and subsequent analysis of the interaction of calcium sulfate with added citric acid and with two additional proportions of carbon fibers of different lengths has been based on the IMR and D Method for its realization. The purpose of this work is the study of the physical and mechanical behavior of the resulting material between the intimate mixture of calcium sulfate with additives and carbon fibers, justifying said work with a link to the Sustainable Development Goals (SDG) regarding the benefits that the Calcium sulfate has contributed to civil society since times dating back to ancient Egypt. We find ourselves with a material of which the energy used in its manufacture is far from that required by steel or cement, and construction with this new compound is in a much higher stage than construction with adobe. Therefore, this is a compound that can be developed for a wide variety of applications. The novelty of this study is the inclusion of polymeric fibers in a material used over the centuries to improve its mechanical properties. With these improvements we will be able to reduce thicknesses in manufacturing, which implies a reduction in manufacturing energy and weight structures in buildings, which should be studied and analyzed in the future. The kneading of calcium sulfate with long fibers at high percentages complicates not only the results, but also the manufacturing process. As representative results of the study, we can indicate that a composite material with high mechanical capacity has been achieved, with maximum values of flexural strength of 8.12 N/mm2 and compression strength of 17.58 N/mm2.

Cómo citar este trabajo How to cite this paperSerna Jara LM. Estudio de revestimientos con morteros modificados de sulfato cálcico contra fuegos de alta intensidad para conducciones de tuberías en la industria petroquímica. Revista Doctorado UMH 2(1): p8 (2015).Estudio de resvestimientos con morteros modificados de sulfato calcico contra fuegos de alta intensidad para conducciones de tuberías en la industria petroquimicaResearch study against high intensity fireworks for pipeline conductions in the petrochemical industry, taking as reference and development base, modified mortars of calcium sulfateEstudio de resvestimientos con morteros modificados de sulfato calcico contra fuegos de alta intensidad para conducciones de tuberías en la industria petroquimica Luis Miguel Serna Jara Revista Doctorado UMH. Vol. 2(1), 2016. Artículo p8 RESUMENEn la actualidad, la industria petroquímica representa uno de los mayores sectores económicos a nivel internacional. Desde, hace mucho tiempo se viene investigando en medios y medidas para la protección contra incendios en edificaciones, tanto de forma activa como pasiva. Sin embargo, muchas de estas investigaciones se han llevado a la práctica en edificaciones e instalaciones industriales, pero se ha convertido en una asignatura pendiente el estudio sobre infraestructuras e instalaciones particulares de un nivel de riesgo alto, como pueden ser las plantas petroquímicas y sus instalaciones. Con este estudio, se pretende llevar acabo el análisis de un material como es el mortero de yeso como aplicación de revestimiento de protección contra incendio, de forma pasiva, en las tuberías de fluidos de distribución en las plantas petroquímicas. La finalidad es que la aplicación de morteros modificados de sulfato de calcio, sea un elemento que contribuya a la protección de dichas tuberías ante posibles incendios y/o explosiones de origen diverso.Palabras clave: Revestimientos, yeso, contra incendio, protección pasiva, tuberías, petroquímica ABSTRACTCurrently, the petrochemical industry is one of the largest economic sectors internationally. Investigations of different means and measures have taken place for long time for fire protection in buildings, both active and passive. Although many of these investigations have been put into practice in buildings and industrial facilities, it has become a pending issue the study on infrastructure and private facilities with high level of risk, such as petrochemical plants and their facilities.With this study, we intend to carry out the analysis of a material such as gypsum plaster mortar as coating application for fire protection, passively, on fluids distribution pipes in petrochemical plants. In order to become an element that will contribute to the protection of such pipes against fires and/or explosions by the application of modified calcium sulfate mortars.

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