Effect of Sulfates on the Properties of Terrazzo Tiles

Abbass Salim, Abbass Ali, Hasson Nahhab
unpublished
An experimental study was conducted to investigate the effect of total sulfates in the mix on the properties of terrazzo tiles. These properties are modulus of rupture , ultrasonic pulse velocity , surface absorption and total absorption .Four levels of total SO 3 content in the mix were investigated , namely 4 , 6 , 8 and 10 % by weight of cement. Test results indicate that there is an optimum SO 3 content in which the ultrasonic pulse velocity is maximum and total absorption is minimum for
more » ... ages considered in this research .This optimum SO 3 content was found to be 6 % by weight of cement giving increase in ultrasonic pulse velocity ranging from 4.65 to 13.96 % and a decrease in total absorption from 0.163 to 3.17 %. On the other hand , increasing the percentage of SO 3 has the effect of decreasing the modulus of rupture .For example , at the 6 % sulfate content , the decrease in modulus of rupture is varied from 12.7 to 39 %. The analysis of the test results also shows that the properties of terrazzo tiles are deteriorated by increasing the period of curing for mixes of high SO 3 content. ‫ﻳ‬ ‫ﺣﻮل‬ ‫ﻣﺨﺘﺒﺮﻳﻪ‬ ‫دراﺳﺔ‬ ‫اﻟﺒﺤﺚ‬ ‫هﺬا‬ ‫ﺘﻀﻤﻦ‬ ‫ﺗﺄﺛﻴﺮ‬ ‫ﻧﺴﺒﺔ‬ ‫اﻷﻣﻼح‬ ‫اﻟﻜﺒﺮﻳﺘﻴﺔ‬ ‫ﻋﻠﻰ‬ ‫اﻟﺨﻠﻄﺔ‬ ‫ﻗﻲ‬ ‫اﻟﻜﻠﻴﺔ‬ ‫ﺧﻮ‬ ‫اص‬ ‫اﻟﻜﺎﺷﻲ‬ ‫اﻟﻤﻮزاﺋﻴﻚ‬ ‫واﻟﺘﻲ‬ ‫وﺳﺮﻋﺔ‬ ‫اﻟﺘﺼﺪع‬ ‫ﻣﻌﺎﻳﺮ‬ ‫ﺗﺸﻤﻞ‬ ‫اﻷﻣﻮاج‬ ‫اﻟﻜﻠﻲﻲ‬ ‫واﻻﻣﺘﺼﺎﺎص‬ ‫اﻟﻮﺟﻪﻪ‬ ‫واﻣﺘﺼﺎﺎص‬ ‫اﻟﺼﻮﺗﻴﺔ‬ ‫ﻓﻮق‬. ‫ﺗﻢﻢ‬ ‫وهﻲ‬ ‫اﻟﻜﺒﺮﻳﺘﺎت‬ ‫ﻣﻦ‬ ‫ﻣﺨﺘﻠﻔﺔ‬ ‫ﻧﺴﺐ‬ ‫اﺳﺘﻌﻤﺎل‬ 4 ‫و‬ 6 ‫و‬ 8 ‫و‬ 10 % ‫اﻟﺴﻤﻨﺖ‬ ‫وزن‬ ‫ﻣﻦ‬. ‫أﺷﺎرت‬ ‫اﻟﻔﺤﻮﺻﺎت‬ ‫ﻧﺘﺎﺋﺞ‬ ‫إﻟﻰ‬ ‫ﻧﺴﺒﺔ‬ ‫وﺟﻮد‬ ‫ﻟﻠﻤﻮﺟﺎﺎت‬ ‫ﺳﺮﺮﻋﺔ‬ ‫اآﺒﺮﺮ‬ ‫ﻋﻠﻰﻰ‬ ‫ﻓﻴﻬﺎﺎ‬ ‫اﻟﺤﺼﻮﻮل‬ ‫ﻳﺘﺘﻢ‬ ‫ﻟﻠﻜﺒﺮﻳﺘﺎﺎت‬ ‫ﻣﺜﻠﻰ‬ ‫واﻗﻞ‬ ‫اﻟﺼﻮﺗﻴﺔ‬ ‫ﻓﻮق‬ ‫وﻟﻜﻞ‬ ‫اﻟﻜﻠﻲ‬ ‫ﻟﻼﻣﺘﺼﺎص‬ ‫ﻧﺴﺒﺔ‬ ‫اﻷﻋﻤﺎر‬ ‫اﻟﺒﺤﺚﺚ‬ ‫هﺬﺬا‬ ‫ﻓﻲ‬ ‫ﺗﻨﺎوﻟﻬﺎ‬ ‫ﺗﻢ‬ ‫اﻟﺘﻲ‬. ‫اﻟ‬ ‫هﺬﺬﻩ‬ ‫هﻲﻲ‬ ‫اﻟﻤﺜﻠﻰﻰ‬ ‫ﻨﺴﺒﺒﺔ‬ 6 % ‫وزن‬ ‫ﻣﻦ‬ ‫ﺳﺮﻋﺔ‬ ‫ﻓﻲ‬ ‫زﻳﺎدة‬ ‫ﻣﻌﻄﻴﺔ‬ ‫اﻟﺴﻤﻨﺖ‬ ‫اﻷﻣﻮاج‬ ‫ﻣﻦ‬ ‫ﺗﺘﺮاوح‬ ‫اﻟﺼﻮﺗﻴﺔ‬ ‫ﻓﻮق‬ 4.65 ‫اﻟﻰ‬ 13.96 % ‫وﻧﻘﺼﺎن‬ ‫اﻻ‬ ‫ﻓﻲ‬ ‫ﺑﻴﻦ‬ ‫اﻟﻜﻠﻲ‬ ‫ﻣﺘﺼﺎص‬ 0.163 ‫و‬ 3.17. % ‫ﺟﻬﺔﺔ‬ ‫وﻣﻦﻦ‬ ‫أﺧﺮﺮى‬ ‫ﻳﺆﺆدي‬ ‫اﻟﻜﺒﺮﻳﺘﺎﺎت‬ ‫ﻧﺴﺒﺒﺔ‬ ‫زﻳﺎﺎدة‬ ‫ﻓﺎﺎن‬ ‫إﻟﻰﻰ‬ ‫ﻧﻘﺼﺎﺎن‬ ‫ﻴﻴﻦ‬ ‫ﺑ‬ ‫ﺮﺮاوح‬ ‫ﻳﺘ‬ ‫ﺎﺎن‬ ‫اﻟﻨﻘﺼ‬ ‫ﺬﺬا‬ ‫ه‬ ‫ﺎﺎن‬ ‫ﻓ‬ ‫ﻚﻚ‬ ‫ذﻟ‬ ‫ﻰﻰ‬ ‫ﻋﻠ‬ ‫ﺎﺎل‬ ‫،وآﻤﺜ‬ ‫ﺪﺪع‬ ‫اﻟﺘﺼ‬ ‫ﺎﺎﻳﺮ‬ ‫ﻣﻌ‬ 12.7 ‫و‬ 39 % ‫ﻮﻮى‬ ‫ﻣﺤﺘ‬ ‫ﻮﻮن‬ ‫ﻳﻜ‬ ‫ﺪﺪﻣﺎ‬ ‫ﻋﻨ‬ ‫اﻟﻜﺒﺮﻳﺘﺎت‬ ‫هﻮ‬ 6 %. ‫ﻟﻘﺪ‬ ‫ﺑﻴﻦ‬ ‫أﻟﻤﺨﺘﺒﺮﻳﻪ‬ ‫اﻟﻔﺤﻮﺻﺎت‬ ‫ﻧﺘﺎﺋﺞ‬ ‫ﺗﺤﻠﻴﻞ‬ ‫ﺑﺎن‬ ‫اﻹﻧﻀﺎج‬ ‫ﻓﺘﺮة‬ ‫ﺑﺰﻳﺎدة‬ ‫ﺗﺘﻀﺮر‬ ‫اﻟﻤﻮزاﺋﻴﻚ‬ ‫اﻟﻜﺎﺷﻲ‬ ‫ﺧﻮاص‬ ‫وذﻟﻚ‬ ‫اﻟﺤﺎو‬ ‫ﻟﻠﺨﻠﻄﺎت‬ ‫اﻟﻜﺒﺮﻳﺘﺎت‬ ‫ﻣﻦ‬ ‫ﻋﺎﻟﻴﺔ‬ ‫ﻧﺴﺒﺔ‬ ‫ﻋﻠﻰ‬ ‫ﻳﺔ‬ .
fatcat:monx2dpn5fbzpfn6qwhlcdocma