| dc.description.abstract | Mortar is a mixture of cement and sand in some specified proportion which is generally
used for brick masonry and plastering. In first case of the mortar compressive loads
such as the load of the wall above it, therefore it is very much necessary to test the
mortar for its compressive strength. This paper discusses the variation of cement mortar
compressive strength after3, 7, 14, 28 days with different types of sand (Local sand,
Sylhet sand, ASTM Standard Graded sand). In the experiment, 48 cubical specimens
of 2 inch by 2 inch were tested to identify the compressive strength of cement mortar
using Universal Testing Machine (UTM).
In this experiment we also used some process to increase the strength of mortar
cylinder, there is curing process. Curing process must be followed to achieve desired
concrete properties. Curing is necessary to ensure that the concrete will have sufficient
moisture available to develop required properties. The results show that the
compressive strength of cement mortar of ASTM Standard Graded sand is higher than
that of the Sylhet or localsand. The difference in compressive strength of cement mortar
tends to be greater as the difference in sand fineness increases.
The results show that the compressive strength of cement mortar of ASTM standard
graded sand is higher than that of the Sylhet or local sand. The strength of Ottawa
cement mortar in 3 days is about 55% higher than local sand, in 7 days it is about
48%, in 14 days it is about 30% and in 28 days it is about 23% higher than local sand | en_US |
