A Laboratory Evaluation of Plastic (Stucco) Cement-Based Plaster as a Barrier to Water Penetration of Concrete Masonry Construction at Hurricane Force Wind Speeds

2010 ◽  
pp. 55-55-14
Author(s):  
Russell T. Flynn ◽  
Jim Guide
Keyword(s):  
Laboratory Evaluation ◽  
Water Penetration ◽  
Wind Speeds ◽  
Masonry Construction ◽  
Concrete Masonry

Determination of optimum volume proportions for Sarooj (Pozzolan) lime mixes

2000 ◽  
Vol 6 (2) ◽  
pp. 171-176 ◽  
Author(s):  
Abdel Wahid Hago ◽  
Amer Al-Rawas ◽  
Ali S. Al-Harthi
Keyword(s):  
Compressive Strength ◽  
Cementitious Material ◽  
Hydraulic Structures ◽  
Historical Buildings ◽  
Military Installations ◽  
Masonry Construction ◽  
Concrete Masonry ◽  
Cementing Material ◽  
Optimum Volume

Abstract Sarooj is an artificial pozzolan produced by burning special types of clays. It has been used extensively in Oman as a cementing material in concrete masonry construction, particularly in hydraulic structures, buildings and military installations. Sarooj is cementitious when mixed with lime and water. It is a cheap cementitious material for use in construction and restoration of historical buildings. An experimental research program was developed to determine the optimum volume proportions that can be used in concrete and mortar mixtures. Twenty five sarooj-lime mixes having different proportions of sarooj, lime, sand and water were tested. In addition, tow groups of mixes (sarooj, lime, sand, water) batched by weight and by volume, with each group contained three mixes of the same proportions, were tested to study the effect of the fineness of sarooj on the strength characteristics of the sarooj-lime mix. It was found that grinding sarooj to pass the 300 mu m sieve produced the highest compressive strength, while optimum volume proportions of sarooj, lime, sand and water for the highest compressive strength was 3:1:3:1.9.

scholarly journals Joint reinforcing in cavity wall concrete masonry construction

2017 ◽  
Vol 7 (080) ◽  
pp. 49
Author(s):  
Equipo Editorial
Keyword(s):  
Cavity Wall ◽  
Masonry Construction ◽  
Concrete Masonry

Not available

THIN LAYER CONCRETE BLOCKWORK IN COMPRESSION: AN EXPERIMENTAL ANALYSIS

2015 ◽  
Vol 7 (2) ◽  
pp. 91-96 ◽  
Author(s):  
Ayman Trad ◽  
Hassan Ghanem ◽  
Nivine Abbas ◽  
Ziad Hamdan
Keyword(s):  
Compressive Strength ◽  
Research Program ◽  
Concrete Block ◽  
Thin Layers ◽  
Lightweight Aggregates ◽  
Masonry Construction ◽  
Concrete Masonry ◽  
Concrete Blocks ◽  
Compressive Strength Of Concrete ◽  
Set Up

The compressive strength of concrete block masonry is dependent upon the unit compressive strength, the type of unit, the mortar and the form of masonry construction (Mirza et al. 1995). The design codes allow masonry compressive strength to be established (or better: estimated) by calculation, from tests, or from tabulated values. In this way the current European masonry standard EN 1996: Part 1-1 (LST EN 1996-1-1) tabulates the masonry strength for concrete blocks with thin layers of mortar. In France, doubts exist on the validity of these tabulated values for the blocks made with lightweight aggregates. To provide data for an extension of the use of the tabulated values for lightweight aggregates blocks and at the same time to provide input to the development of Eurocode 6, a major research program was set up. The research program aims to evaluate the mechanical strength of the thin joints hollow concrete masonry made with dense or lightweight aggregates. Tests have been carried out on a very large type of hollow blocks. Different geometries of blocks and different types of aggregates are tested. All these tests are based on CEN standards to meet Eurocode 6 requirements. This work proves that the formula proposed by Eurocode 6 to calculate the characteristic compressive strength of hollow concrete masonry are largely safe. It was also found that the strength of masonry depends only on the block resistance and is independent of the nature of aggregate.

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