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Influence of Polycarboxylate Superplasticizer on the Calorimetric and Physicomechanical Properties of Mortar
Analytical Expressions of the Markov Chain of K-Ras4B Protein within the Catalytic Environment and a New Markov-State Model
Properties of Indium Antimonide Nanocrystals as Nanoelectronic Elements
Methodology of the Professional-Business Game for the Development of a Cadet Leader in Professional Training Courses (L-1B) of the Tactical Level of Military Education
Educational Innovation amidst Globalization: Higher Education Institutions and Societal Integration
Kinetic Study of the Removal of Reafix Yellow B8G Dye by Boiler Ash
Indigenous Environmental Resilience: Decoding Ancient Rozvi Wisdom on Mountain Ecosystems as Disaster Management Solutions
Fred Vlès – Early Holistic Biophysicist and Pioneer of “Earthing”
Deep Semantic Segmentation New Model of Natural and Medical Images
Research Article
Influence of Polycarboxylate Superplasticizer on the Calorimetric and Physicomechanical Properties of Mortar
The use of polycarboxylate ether superplasticizer PCE in the preparation of mortars and concretes influences the hydration kinetics and the amount of total heat released. This leads to a modification of certain properties of the mortar, namely workability, calorimetry and mechanical resistance. In this study two ether polycarboxylate superplasticizers with different chemical structures were used; they were incorporated at different dosages into a standardized cement-based mortar. The objective of this work is to study the effectiveness of these superplasticizers and to select the most compatible product with cement and the most suitable for use according to the climates of the country. The impact of superplasticizers on fresh cement was studied by measuring the Marsh cone flow time and calorimetric measurement. In the hardened state, the mechanical properties were provided by measuring the compressive strength. The results show that low dosages of ether polycarboxylate superplasticizer promote grain hydration and produce more heat. On the other hand, high dosages delay the contact of the cement grains with the mixing water and cause a reduction in the final heat released and a delay in setting. The ether polycarboxylate superplasticizer with high carboxylic density gives the best mechanical resistance compressive at 7 and 28 days.
