Properties of Self-Compacting Mortars with Different Contents of Synthetic Macro Fiber

Abstract

This study is devoted to investigating engineering properties of Self-Compacting Mortar (SCMs) produced with synthetic macro fiber. For this purpose, five different mix designs were prepared with a constant w/c ratio of 0.55 to sustain self-compatibility. Fiber content in these mixtures were changed from 0% to 5%. Engineering properties were investigated in terms of workability, mechanical properties and abrasion resistance. Compressive strength and flexural strength tests were conducted on the specimens exposed to three different water curing age 7 days, 28 days and 56 days respectively. In this study, also optimum synthetic fiber amount was determined to sustain self-compatibility of mortar. It was revealed that 2 and 3 kg/m3 synthetic macro fiber ratio are the key proportions to improve workability and flexural strength properties of hardened mortar. Moreover, adding fiber to mortar decreased abrasion resistance at 28 days age. In reverse, fiber addition increased abrasion resistance at 56 days age.

Effect of Partial Inclusion of Tiles and Brick Waste as Binders in SCM Elements on Fresh State and Early Age Mechanical Properties

“…A water/binder (w/b) ratio of 0.46 and a total binder content of 550 kg/m 3 were taken for the SCMs, of which 6 sets were produced, one set being the reference set. EFNARC criteria provide a method of determination and limit states for important parameters such as filling ability, stability, flowability, viscosity, migration ability, segregation for self-compacting cement designs [25]. For this reason, the w/b ratio was kept constant in the mix design while the use of HRWR was kept at variable rates.…”