Abstract
In the present view, several buildings are constructed ranging from ordinary residential building to sky - scrap structures. Invariably in all the structures, mortar plays a vital role in construction. Generally mortar is mixture of cement, fine aggregate, water and different type of admixtures used depends upon the situation. The cost of cement is increasing progressively day to day. In consequently cost of the building is also being increased. Wood ash does not make any pollution and eco – friendly for green building construction. This material is easily get more from burning of wood in home and industries, there by the cost of material too be reduced. Therefore, it has planned to conduct experiment on mortar in which the cement is partially replaced by wood ash. SEM Analysis is also carried out in mortar mix for observing bond between cement and wood ash.
Highlights
Mortar is a workable paste used to bind building blocks such as stones, bricks and concrete masonry work units together, fill and seal the irregular gaps between them, and sometimes add decorative colours of patterns in masonry wall
Scanning Electron Microscopy (SEM) photographs are presented for reference mix and WA1 mix at 2, 5, 10, 20 μm to show particles distribution in mortar cube after 7 days and 28 days curing as in figure 3 and 4
From SEM photograph one can understand how bonding occurred an cement with sand and cement with wood ash
Summary
Mortar is a workable paste used to bind building blocks such as stones, bricks and concrete masonry work units together, fill and seal the irregular gaps between them, and sometimes add decorative colours of patterns in masonry wall. Cement mortar becomes hard when it cures, resulting in a rigid aggregate structures; the mortar is intended to be weaker than the building blocks and the sacrificial element in the masonry, because the mortar is less expensive to repair than the building blocks. Mortars are typically made from a mixture of sand, a binder since the early 20th century Portland cement but the ancient binder lime mortar is still used in some new construction. Lime and gypsum in the form of plaster of Paris are used in the repair and repointing of buildings and structures because it is important in the repair materials. Pozzolanic mortar is a lime based mortar, but is made with an additive of volcanic ash that allows it to be hardened under water
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