The effect of blend copolymers on physico-mechanical properties of mortar

L. Bekbayeva; E.-S. Negim; G. Yeligbayeva; E. Ganjian

doi:10.31643/2019/6445.32

Authors

L. Bekbayeva Satbayev University, Almaty, Kazakhstan
E.-S. Negim Kazakh-British Technical University
G. Yeligbayeva Satbayev University, Almaty, Kazakhstan
E. Ganjian Coventry University, Coventry

DOI:

https://doi.org/10.31643/2019/6445.32

Keywords:

Mortar, PVA, urea, cement, compressive strength, workability.

Abstract

The present study investigates the effect of blend copolymers on the physico-mechanical properties of mortar mixes. Blend copolymers were synthesized based on poly vinyl alcohol (PVA) and urea (U) in aqueous solution with different blend ratios 65/35, 50/50 and 35/65 respectively, using glacial acetic acid as crosslinking. Physico-mechanical properties of mortar examined included water/cement ratio, setting time, workability, water absorption and compressive strength. The addition of blend copolymers to the mortar affected the physico-mechanical properties of mortar mixes. As the content of PVA increases in the blend copolymers, the water of consistency decrease, whereas the setting times (initial & final) were shortened. The compressive strength of the hardened cement pastes was increased at all ages of hydration while water absorption decreased.

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Author Biographies

L. Bekbayeva, Satbayev University, Almaty, Kazakhstan

Ph.D. student, School of Chemical and Biological Technologies, Satbayev University, Almaty,
Kazakhstan.

E.-S. Negim, Kazakh-British Technical University

El-Sayed Negim- Ph.D. Professor, School of Chemical Engineering, Kazakh-British Technical University, Almaty, Kazakhstan.

G. Yeligbayeva, Satbayev University, Almaty, Kazakhstan

Ph.D. Professor, School of Chemical and Biological Technologies, Satbayev University, Almaty, Kazakhstan.

E. Ganjian, Coventry University, Coventry

PhD. Professor School of Energy, Construction and Environment, Faculty of
Engineering, Environment & Computing, Sir John Laing Building, Coventry University, Coventry, the United Kingdom.

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