The use of methods based on measuring electrical conductivity to assess pozzolanic activity has recently been used primarily in aqueous suspensions of pozzolan: calcium hydroxide. However, the use of similar methods in suspensions of cement with pozzolans has not been widely studied. This paper proposes a new method for rapid assessment of the pozzolanic activity of mineral admixtures in aqueou...

Pervious concrete is a developing construction material used for sustainable solutions which helps restore the groundwater level based on its draining ability. The existing research studies address strength and permeability of pervious-concrete materials only limited data available microstructural characteristics pervious concrete. In this study, characteristic analysis was carried out at micro...

This paper presents a study of the potential use iron mining tailings as artificial pozzolan (metakaolin) after their submission to thermal treatment via calcination in flash furnace. The research consists characterization before and calcination, chemical, mineralogical, thermogravimetric, mechanical strength analyses were conducted. results compared with those for commonly used pozzolans, meta...

The sustainable development goal (SDG) 14 of the 2030 Agenda for Sustainable Development aims at protection, conservation, and management coastal ecosystems resources, including by strengthening their resilience, to avoid significant adverse impacts. Coastal/marine structures are exposed aggressive environmental conditions, such as chloride laden environment. Deterioration reinforced concrete l...

Kaolin is an industrial mineral used in a wide variety of applications due to its crystalline structure, and elemental composition. After kaolin undergoes heat treatment specific temperature range, metakaolin, which exhibits strong pozzolanic reaction, formed. This paper examines the effects different qualities on thermal activation process metakaolin production. The depend impurities they cont...

Abstract In the present study aims to produce high-strength fiber concrete containing microsilica and metakaolin. Eight mixing samples have been defined. The include control with ordinary Portland cement, replacing 10 percent of weight cement microsilica. amount was kept constant in next six designs. Three addition Forta fibers at rate 0.2, 0.5, 0.8 percent. Finally three 0.5% 8, 12% metakaolin...