%0 Journal Article %T EFFECT OF QUARRY DUST AND BILLET SCALE ADDITIONS ON THE PROPERTIES OF FLY ASH BRICKS %J Iranian Journal of Science and Technology Transactions of Civil Engineering %I Shiraz University %Z 2228-6160 %D 2014 %\ 02/01/2014 %V 38 %N C1 %P 51-60 %! EFFECT OF QUARRY DUST AND BILLET SCALE ADDITIONS ON THE PROPERTIES OF FLY ASH BRICKS %K Fly ash brick %K quarry dust %K billet scale %K strength %K water absorption %R 10.22099/ijstc.2014.1843 %X This paper reports the effect of addition of quarry dust and billet scale on the propertiesof fly ash bricks. Bricks were made with fly ash and cement and varying percentages of quarrydust and billet scale. All the mixtures were made to be flowable in fresh state. The bricks werethen tested for strength, modulus of rupture, ultrasonic pulse velocity, initial rate of suction, waterabsorption, and efflorescence. The strength of bricks ranged from 0.8 MPa to 18.9 MPa, modulusof rupture ranged from 0.13 MPa to 3.7 MPa, water absorption from 15 to 32 %, and initial rate ofsuction between 0.27 and 2.21 kg/m2.min. All the bricks were categorised as non-efflorescent. Itis concluded that the optimum ratio of fly ash and billet scale and quarry dust and billet scale is 1:1to get improved strength. Furthermore, it is shown that fly ash bricks incorporating 25% of quarrydust and billet scale gives reduction in the various properties observed. %U https://ijstc.shirazu.ac.ir/article_1843_fb8a0f61ae935a2042885ff5114d27eb.pdf