Results 31 to 40 of about 4,574,504 (206)

A comparative study of physical and chemical properties of different pozzolanic materials used for roller compacted concrete RCC dams

MATEC Web of Conferences, 2017
This paper addresses the feasibility and the efficiency of using Natural Pozzolan and/or Rock flour in Roller Compacted Concrete (RCC) gravity dams. For this purpose, five identical mortar trial mixes were prepared using five different supplementary ...
Husein Malkawi Abdallah I., Shatnawi Ehab, Husein Malkawi Dima A.   +2 more
doaj   +1 more source

The Use of Waste Corn Cob as Aggregate in Geopolymer Mortar

Journal of Architectural Sciences and Applications, 2023
This research aims to investigate the effects of waste corn cob aggregate on the properties of volcanic tuff-based geopolymer mortar. Nevşehir Pozzolan, which is produced as waste during the stone-cutting process, was used as an aluminosilicate source ...
Kübra Ekiz Barış
doaj   +1 more source

Natural Pozzolans a Comparative Study: A Review

IOP Conference Series: Materials Science and Engineering, 2020
Abstract Exploitation of Natural Pozzolans (Calcined Clay, Calcined Shale & Metakaolin) as Supplementary Cementitious materials (SCMs) for mortar and concrete has attended goodish observance in last decades. In this content the NP used in vast range in partial substitution of cement in concrete and mortar, and due to its pozzolanic ...
Ashish Shukla, Nakul Gupta, Ankur Gupta, Rajesh Goel, Sanjeev Kumar   +4 more
openaire   +1 more source

Effect of three natural pozzolans in portland cement hydration

Materiales de Construccion, 2003
Natural pozzolans have been used since ancient times and continues to be used today. The chemistry and morphological composition of natural pozzolans and their particle size distribution allows classifying them as more or less reactive pozzolan.
V. Rahhal, R. Talero
doaj   +1 more source

Improvement of geotechnical properties of silty sand soils using natural pozzolan and lime

International Journal of Geo-Engineering, 2018
In this study the effect of different amounts of lime and natural pozzolan on geotechnical properties of a silty sand soil has been investigated. To do this, 20 treatments were prepared with adding five lime levels of 0, 1, 3, 5 and 7% (by weight) and ...
Nader Abbasi, Masoud Mahdieh
doaj   +1 more source

Effect of natural pozzolan on strength and temperature distribution of heavyweight concrete at early ages

MATEC Web of Conferences, 2018
The benefits of using mineral additive as a partial replacement for cement in heavyweight concrete are discussed. This paper presents the strength development and temperature distribution of concrete using Class F of natural pozzolan (PU) sourced from ...
Van Lam Tang, Chuc Nguyen Trong, Xuan Hung Ngo, Van Phi Dang, Bulgakov Boris, Bazhenova Sophia   +5 more
doaj   +1 more source

Impacto de la utilización de puzolanas naturales ecuatorianas

Revista de Investigaciones en Energía, Medio Ambiente y Tecnología, 2017
The cement industry provides the basic material in the production of concrete; but it is one of the most aggressive productions in relation to the environmental component, emitting large amounts of CO2 in the process. Research using new binders that meet
Cesar Mauricio Jarre Castro, Juan José Howland Albear, María Shirlendy Guerrero Alcivar, Salomón Brito   +3 more
doaj   +1 more source

Natural pozzolan-based green geopolymer foam for thermal insulation

Journal of Sustainable Construction Materials and Technologies, 2022
The purpose of the current study is to investigate the possibility of volcanic Tuff of Earth of Datça (ED) in Turkey to be used as an aluminosilicate source in the production of a geopolymer foam for thermal insulation.
Leyla Tanaçan, Kübra Ekiz Barış
doaj   +1 more source

Physical, mechanical, and durability properties of gypsum–Portland cement–natural pozzolan blends

, 2001
This paper deals with the effect of gypsum–Portland cement and gypsum–Portland cement–natural pozzolan ratios on the physical, mechanical, and durability properties of gypsum–Portland cement–natural pozzolan blends. The results indicate that the setting
Adnan Çolak
core   +2 more sources

Thermal stability and physicomechanical assessment of volcanic pozzolan-based concrete at elevated temperatures [PDF]

Materials Advances
The development of sustainable construction materials with high fire resistance is a critical challenge in civil engineering. This experimental study investigates the synthesis, characterization, and high-temperature performance of lightweight concrete ...
Abdelilah Bellil, Mohammed Achab, Ayoub Aziz, Khadija Felaous, Anas Driouich   +4 more
doaj   +1 more source