Fibro gypsum-Peplocement concrete composites with polydisperse reinforcement
Abstract
Fibro gypsum-Peplocement concrete composites with polydisperse reinforcement
Incoming article date: 29.12.2024The results of studies of the strength properties of polydisperse reinforced composites based on gypsum fiber cement binders are presented. The increase in compressive strength due to dispersed reinforcement reaches 16% at the age of 2 hours and 19% at the age of 28 days, with bending by 69% and 75%, respectively. The compressive strength level of at least 90% of the maximum strength value occurs with an l/d ratio in the range from 1100 to 1800. When bending, at least 90% of the maximum strength value occurs at any l/d ratio with a reinforcement coefficient of μ = 1.3%. When reinforced with basalt fiber in combination with polypropylene fiber, the compressive strength is 1.67 times. The increase in bending strength ranges from 2.17 times after 2 hours to 2.3 times after 28 days.
Keywords: gypsum cement binders, polydisperse reinforcement, composites, compressive and bending strength