Dear readers, here we have share our project on the study on behaviour of mortarless interlocking concrete blocks, We hope you like it. And one request read it full its interesting.
As the name says interlocking concrete blocks interlock with each other and construct walls without mortar. By providing this type of masonry we save the cost of mortar.
In the normal case of brick masonry or block masonry, we first lay the mortar layer then place bricks or blocks in the proper position but while in interlocking block masonry we don’t require mortar layer that will save a tremendous amount of cost.
The shape of interlocking concrete blocks
|Shape & dimensions of interlocking block|
As shown in the above figure block consist projected portion at the top and a slot at the bottom of the block. This slot will be the same size as the projected portion.
Block also consists of the projected portion at the front side and a slot at the backside.
Length of block = 40cm
Width of block = 20cm
Height of block = 20cm
Top projection = 5cm
Bottom slot = 5cm
Mould for interlocking concrete blocks
So to construct this special type of block we require a special type of mould. After discussing with special block manufacturers we design block mould as shown below.
|Mould for Interlocking block|
Components of interlocking block mould
We divided interlocking concrete blocks mould into three-part, let’s discuss one by one…
The base plate is made of G.I sheet and its provided at the bottom mould. We provide the level surface of the base plate to obtain good finishing at bottom of the block.
|Base plate for of Interlocking mould|
2) Interlocking Frame
The interlocking frame is made of G.I sheets. It provided proper shape at the sides of the block. bolt arrangement is provided to join plates with each other.
3) Wooden frame
It made of four wooden pieces, the function of this frame is to provide a top projection shape. To maintain the proper position of the frame, steel angles are provided as shown in the figure.
|Wooden frame of Interlocking mould|
Photographs of manufacturing of mould
Construction of interlocking concrete block manufacturing
Firstly we arrange all part of the interlocking concrete block mould. Then we apply oil to the surface of mould to get a smooth block surface. We make concrete of 1:4:8(cement:sand: aggregate) and place it in mould in three layers. Compaction is provided will a steel rod and after the construction of mould we wait for Harding.
|Tamping & placing of concrete|
|Mixing of concrete|
|Placing of concrete|
We take out blocks from mould and provide curing for 7 days.
|Curing of concrete|
Here how our block look after construction.
Arrangement of interlocking block
After construction, we arrange a block as shown below figure. We have to arrange such a way that vertical joints don’t come in one line.
|Arrangement of Interlocking block|
Comparison between normal concrete block and interlocking block masonry
below you will see a chart comparison of interlocking concrete block masonry and normal concrete block masonry.