Authors:
Muhammad Junaid Iqbal,Akhtar Gul,Yasir Irfan Badrashi,Syed Azmat Ali Shah,Eid Badshah,Zohaib Hassan,Wisal Ahmed,DOI NO:
https://doi.org/10.26782/jmcms.2021.04.00005Keywords:
Concrete Solid Blocks,Cement,sand and khaka mortar,Compressive Strength,Shear Strength,bond Shear strength,Abstract
This research work aims at the development of a material model for concrete block masonry used in the load-bearing wall as well as masonry infill. To accomplish this, various tests were performed on concrete block (solid) units and concrete block masonry assemblage. A concrete block having a size of 12 x 8 x 6 inches, were fabricated in a mortar ratio of 1:4, 1:2:2, 1:8 and 1:4:4. The compressive strength of concrete block prisms having size 24.36 x 8.04 x 18.72 inches, was also determined by conducting the compressive strength test. The shear strength of square prisms, having size 26.76 x 8.04 x 25.20 inches, was found by applying diagonal loading. To investigate the bond shear strength of concrete block masonry, triplet tests were carried out on block masonry prisms. Before conduct, a test on block assemblage specimens, the constituent materials of block assemblage i.e. block and mortar were also tested for different properties. The average compressive strength of concrete block (12”x8”x6”) was 302.25 psi and the average unit weight was 119.83 lb/ft3. The compressive strength of mortars of 1:4, 1:2:2, 1:8 and 1:4:4 was 2367, 1752,815 and 1332 psi respectively.Refference:
I. Ali, Q. et al., 2012. Experimental Investigation on the Characterization of Solid Clay Brick Masonry for Lateral Shear Strength Evaluation. International Journal of Earth Sciences and Engineering, 05(4), pp. 782-791
II. Ahmad A, Hamid, B.E Abboud, and H.G Harris. To evaluate the use of concrete blocks in modeling of concrete block masonry under axial compression.
III. Ahmad Jan Durrani, Amr Salah Elnashai, Youssef M.A. Hashash, Sung Jig Kim and Arif Masud., : ‘The Kashmir earthquake of October 8, 2005 a quick look.’
IV. Ali, et al. 2012.development of shear strength constitutive material model for brick masonry. Department of Civil Engineering, University of Engineering and Technology, Peshawar. Shahzada Khan (2011), “Seismic Risk Assessment of Buildings in Pakistan (Case Study Abbottabad City), PhD thesis, Department of Civil Engineering, University of Engineering and Technology, Peshawar.
V. ASTM-C-109, Specifications and Standards of Compressive Strength of Cement Sand Mortar.
VI. ASTM-E-519, Specifications and Standards of Principle Tensile Strength of Masonry Assemblage.
VII. ASTM-C-1314-03b, Specification and testing procedure about the compressive strength of the masonry assemblage.
VIII. ASTM C-140-03, Specification and testing procedure about the compressive strength of the concrete masonry units.
IX. EN-1052-3, European Standard for Bond Shear Strength of Masonry Assemblage.
X. Blocks and Bricks Review by Andrew Brown, Distinction between light weight aggregate block and dense grade aggregate block.
XI. Rafiq Adil, Muhammad Fahad, Mohammad Adil, : ‘Macro-Scale Numerical Modeling of Unreinforced Brick Masonry Squat Pier Under In-Plane Shear’. J. Mech. Cont.& Math. Sci., Vol.-15, No.-11, November (2020) pp 72-84. DOI : 10.26782/jmcms.2020.11.00007
XII. Muhammad Rizwan, Hanif Ullah, Ezaz Ali Khan, Nayab Khan, Talha Rasheed. : ‘EXPERIMENTAL INVESTIGATION OF MECHANICAL PROPERTIES OF SOLID CONCRETE BLOCK MASONRY EMPLOYING DIFFERENT MORTAR RATIOS’, J. Mech. Cont.& Math. Sci., Vol.-16, No.-1, January (2021) pp 107-120. DOI : 10.26782/jmcms.2021.01.00009