Properties of mortar containing calcined cockle shells ash as partial cement replacement.

Autor: Mohamad, Nabilla, Muthusamy, Khairunisa, Embong, Rahimah, Yahaya, Fadzil Mat, Ahmad, Saffuan Wan
Předmět:
Zdroj: AIP Conference Proceedings; 2023, Vol. 2688 Issue 1, p1-8, 8p
Abstrakt: The increasing cement production contributes to global warming by harvesting a significant quantity of raw materials from the environment and calcination of limestone. Simultaneously, the cockle trade produces cockle shells, which are disposed of as environmentally damaging trash due to their slow decomposition rate. Using cockle shells as a mixing ingredient in cement production would alleviate the waste from ending up at the dumpsite. The purpose of this study is to determine the setting time, compressive strength and water absorption of mortar made using cockle shell powder subjected to the heat of 100°C and cockle shell ashes calcined at 650°C as a partial cement substitute. Cockle shell ash was employed at different amounts, namely 0%, 10%, 20%, 30%, and 40% by weight of cement during the production of mortar specimens. All specimens were water cured until the testing date. Few types of testing have been conducted, namely setting time, water absorption, and compressive strength. The findings show that mortar produced using 10% cockle shell calcined at higher temperature exhibits lower water absorption and higher compressive strength. Success in utilising cockle shells for cement production would reduce pollution caused by cockle waste disposal and the cement industry. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index