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III. EUROPEAN CONFERENCE ON SCIENCE, ART & CULTURE
ECSAC’18 – NORTHERN CYPRUS
Gazimağusa, October12-14, 2018

OP-47
AN APPROACH TO THE USE OF PUMICE AGGREGATED LIGHTWEIGHT
CONCRETE MASONRY BLOCK MEMBERS WITH DIFFERENT
GEOMETRIC DESIGN FEATURES IN CYPRUS CLIMATE CONDITIONS

Lütfullah GÜNDÜZ , Şevket Onur KALKAN 1
1

1 Department of Civil Engineering, Izmir Katip Çelebi University, Izmir, Turkey,

The production of lightweight concrete masonry units transitioned from a hand cast process to a highly automated
one during the past 100 years. Single molds compacted by hand gave way to ganged molds that travel on assembly
lines in high-tech manufacturing facilities. These changes have also led to excellent quality control and uniformity
of units. Concrete masonry units are manufactured from very dry, stiff concrete mixtures. The “no-slump” or “low-
slump” material is placed into molds, vibrated and compacted, and demolded quickly. Units are stiff enough to hold
their shape as they enter the curing chamber. Afterwards, they are palletized and readied for shipping. They could be
manufactured, adding to local economies and meeting sustainable criteria for availability. Lightweight cellular hollow
concrete block is a type of masonry unit manufactured by precast technique. It is produced by the mixing of Portland
cement and different lightweight aggregate types for building applications. These types of blocks are lightweight and
being frequent cellular hollow cleavages, give excellent thermal and acoustic performance, fire resistance and high
weathering resistance to the buildings.
Energy efficiency construction is an important consideration today and for the future. The affordability of residential,
commercial and industrial construction is directly related to the energy efficiency of major construction materials. In
order to provide high energy efficiency for a masonry block design, as well as using aggregate type in the concrete
mixture is an important factor, geometrical forms and cellular hollow shapes of the masonry are also very important
basic factors. Differ the cellular hollow shape provides a good ability to thermal comfort of the masonry block, because
insulating values are a function of geometrical hollow shapes. Evaluating the different cellular hollow shapes in a
masonry design is an acceptable methodology to reach a very low thermal conductivity values for lightweight non-load
bearing masonry blocks. In this paper, a series of different cellular hollow shape such as rectangular, quadratic, circular,
triangular, ellipsoid etc, will be analysed for the effects of technical aspects of masonry block designs to ensure excellent
thermal performance in a cost competitive wall system. Some case study experiences on cellular hollow shape effects
will also be discussed to suitability of Cyprus regional thermal insulation requirements according to Turkish national
standard of TS 825.
Keywords: Cellular hollow shape, Lightweight, Masonry Block, Thermal insulation, Propery.

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