Open AccessMechanical Properties of Light Weight Aggregate Concrete Using Pumice as a Coarse Aggregate
Author(s) -
Hayder Kadhem Adai Al-Farttoosi,
Oday A. Abdulrazzaq,
Haleem K. Hussain
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1090/1/012106
Subject(s) - pumice , materials science , aggregate (composite) , ultimate tensile strength , compressive strength , composite material , volcano , seismology , geology
This study investigates the mechanical properties of hardened lightweight coarse aggregate concrete (LWAC) using Pumice as a lightweight aggregate. Eleven concrete mixes were prepared to investigate the effects of pumice ratio to total aggregate, micro-silica to binder ratio (MS/b), and the water to binder ratio ( w/b ) on equilibrium density, compressive strength ( f cu ), splitting tensile strength ( f ct ), and modulus of rupture ( f r ). The main parameters were performed by reducing Pumice to total aggregate ratio, reducing micro-silica to binder ratio, and water to binder ratio by reducing binder content. Six cubic specimens (150×150×150 mm 3 ), three cylinders (100 dia. and 200mm height), and one prism (100×100×350 mm 3 ) were used to investigate f cu , f ct , and f r , respectively. All specimens were tested at 28 days. The specimens had a density of 1833 – 2031 kg/m 3 with a compressive strength ranged from 27 MPa to 44 MPa. The results showed that using micro-silica increases f cu , f ct , and f r , along with an insignificant decreasing equilibrium density. Due to the low weight of Pumice compared to the other material of the mix, the result showed that decreasing the amount of Pumice increases the equilibrium density, f cu , with decreasing in f ct , and f r of concrete. Also, increasing the w/b decreases equilibrium density, f cu , f ct , and f r of concrete.