Calcined Attapulgite Clay as Supplementary Cementing Material: Thermal Treatment, Hydration Activity and Mechanical Properties

• DOI: 10.1186/s40069-022-00499-8
• Publication Date: 2022-02-05T00:03:12Z
• Authors: Tao Shi; Yanming Liu; Yanlin Zhang; Yingjia Lan; Qifan Zhao; Yujing Zhao; Haobo Wang
• Keywords: Systems of building construction. Including fireproof construction, concrete construction; supplementary cementing material; TH1000-1725; attapulgite clay; 02 engineering and technology; mechanical properties; calcination temperature; 0210 nano-technology; hydration activity; 12. Responsible consumption

Abstract The present paper studied the effects of calcination temperatures (200–800 °C) on appearance, mineral composition, and active SiO 2 content in attapulgite investigated before after chemically bonded water content, degree reaction cement paste, mechanical properties such as flexural strength, compressive splitting-tensile strength mortar. results indicate that temperature changes composition attapulgite, thereby affecting hydration activity cement-based materials. calcined at 500 °C (AT500) has best enhancement is most beneficial to dissolution , reaches 20.96%. contents samples incorporated with reduced AT500 28 d same control group. 78.61% days. Calcined clay can reduce energy consumption industry promote sustainable development clay.