Evaluate the compressive strength of cement paste modified with high reactivity attapulgite and affected by curing temperature

This study explores the influence of partial replacement high reactivity Attapulgite (HRA) with cement by weight and evaluate effect curing temperatures on compressive strength modified paste (MCP). Recently, Iraqi clay(Attapulgite) has been processed to pozzolanic material HRA, after extracting it from quarry clays crushed grind filler then specific suitable calcinations temperature make this as a pozolznic material. The possibility replacing can be reduce cost impact manufacturing environment. In study, three percentages used 0, 10 20 % cement. samples cured in four 20, 40, 60 80 °C. dimension 50x50x50 mm3 were casted tested at ages 7, 28 days. test result shows that early without HRA °C higher than HRA. maximum percentage reduced concrete. days for 10% 40 increased up °C, while when decreased strength.