Open AccessEFFECT OF MgO POWDER ON PHYSICAL AND MECHANICAL PROPERTIES OF POLYOLEFIN FIBER REINFORCED CONCRT
Author(s) -
Israa kadhum,
Yasir Khalil,
Hamza Mustafa
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/928/2/022088
Subject(s) - polyolefin , materials science , shrinkage , composite material , cement , expansive , cracking , curing (chemistry) , flexural strength , fiber , compressive strength , properties of concrete , layer (electronics)
Expansive additives are widely used to compensate the drying shrinkage of cement-based materials to avoid cracking. However, the expansion of conventional expansive additive depends strongly on wet curing and is mainly generated at early age, and hence it may not work well in concretes without sufficient water supply or exhibit long-term shrinkage. MgO-based expansive additive, for which less water is needed for the formation of Mg(OH)2 in comparison to other expansive additives.For the purpose this paper proposed a new kind of cement concrete overlay material comprised of polyolefin fiber and MgO powder. An experimental test procedure including density, compressive strength and flexural strength in this article was investigated. The results showed improvement of all the properties of the concrete mixes. Obvious compound effect of polyolefin fiber and MgO powder on concrete properties was noticed.