High Strength SuperPlasticized Ternary Blended Mortar for Ferrocement Elements

Authors

  • Battina Swathi, T. Chandra Sekhar Rao

Abstract

The goal of the experimental “work is to enhance and test a ternary blended super plasticized mortar of high strength for ferrocement works. The fundamental concept behind this material is the concrete, can undergo large strains in the neighborhood of the reinforcement and the magnitude of strains relies upon the distribution and subdivision of reinforcement during the mass of concrete, hence ferrocement works demand high strength mortar. For the cement mortar to penetrate without any problem between the layers of mesh we need highly workable cement mortar which needs to also have strength characteristics. To achieve this, SNF based superplasticizer was added. An experimental utility performed to find the properties of mortar made from binary and ternary blends of ordinary Portland cement (OPC), Ground-granulated blast-furnace slag (GGBS), Silica fume (SF), and Sulfonated Naphthalene Formaldehyde (SNF). Different mortar mixtures with a combination of OPC and fine aggregate with different water to cement ratios (0.34 – 0.4) were produced to attain high strength, in the optimum mixtures giving high strength OPC is partly changed by using SF, GGBS, or a mixture of SF and GGBS at unique alternative tires of (0–40%) by way of weight of the binder. At the fresh state, the flow (workability) of mortar combinations used to be determined, whilst at the hardened state, the compressive strength at the age of 7 and 28 days used to be evaluated. Ferrocement elements demand mortar of good workability along with strength. A moderately workable high mortar strength can be obtained through using a blended cement mortar with the use of superplasticizers. For the optimum mixes, an SNF based totally superplasticizer is added at distinctive ranges of (0-1%) through weight of the binder. The results showed that there is an increase in mortar strength with the combined use of SF and GGBS compared to when SF, GGBS, and OPC are separately used but a decrease in workability is observed with ternary blending. Hence the addition of SNF based superplasticizer gave good results in both fresh and hardened properties. It was concluded that the ternary blending of cement mortar with Silicafume, GGBS, and SNF based super plasticizer has resulted in high strength workable mortars.

Published

2020-03-31

Issue

Section

Articles