دراسة تاثيراضافة العامل المنشط للسطح دوداكيل بنزين سلفونايت الامونيوم التواميه على مقاومه الانضغاط لخلطة إسمنتيه معالجه بالماء

Abstract

We studied the effect of adding (Dodecyl Benzene Ammonium Sulphonate) as afunction of different ratio( 1% - 8%) where these additives added to the matrix of Iraqi cement (Om Quasar factory for cement) .All the prepared samples were in form of cubic with aside ( 50 mm ) long and evaluated as afunction of dipping time in distilled water . All the prepared samples had a proportion of 3/1) cement to sand ). The obtained results showed that the (Dodecyl Benzene Ammonium Sulphonate) tends to decrease the compressive strength of the modified cement mixture with increasing curing time with distilled water where the amount of decrease linearly when curing time is 21 days but less decrease in compressive strength obtained when curing time is 3 and 7 days while the relative compressive strength decrease linearly also as a function of adding ratio when curing time is 3 days. Also surfactant (Dodecyl Benzene Ammonium Sulphonate) acting as plasticizer on cement matrix leading to flexible cement. Finally the obtained results showed that there is a critical ratio of (Dodecyl Benzene Ammonium Sulphonate) depending on the kind of used cement and curing conditions enabling us to use this modified cement in many application specially in industrial and oil for the high workability of this cement and the less water needs.