Results 21 to 30 of about 576 (177)

Evaluation of Pozzolanic activity and lime reactivity of fly ash, GGBS, mica powder and pumice as binders [PDF]

E3S Web of Conferences
This article presents the effect of the pozzolanic activity and lime reactivity of various siliceous materials, like fly ash, GGBS (Ground granulated blast furnace slag), mica and pumice powders.
Ramanujam I.V. Ranga, Reddy K. Ramachandra, Ramana N. Venkata   +2 more
doaj   +1 more source

Physical-Chemical characterization of roman mortars in El Ruedo at Almedinilla, Córdoba

Materiales de Construccion, 2004
This paper describes the analysis of Roman mortars in two rooms of a villa at El Ruedo, Almedinilla, Cordoba. The techniques or procedures used included grain size distribution analysis and X ray diffraction.
J. M. Fernández Rodríguez, J. A. Fernández Fernández   +1 more
doaj   +1 more source

Flow of wet natural pozzolana

Journal of Physics: Conference Series, 2009
We present experimental results on the flow and stability conditions for natural pozzolana, a natural volcanic sand widely used in concrete production. We measured different angles involved in equilibrium conditions for sand piles and relate them to the flux parameters necessary to produce a silo evacuation.
Medici, Maria Elizabeth, Benegas, Oscar Armando, Aguirre, Fernando, Baudino, Mario, Uñac, Rodolfo Omar, Vidales, Ana Maria, Ippolito, Irene Paula   +6 more
openaire   +2 more sources

Mortars From Punic and Hellenistic–Roman Solunto: Materials, Formulations, and Technology

Archaeometry, EarlyView.
ABSTRACT This study presents an archaeometric investigation of 18 hydraulic rendering and bedding mortars from Punic and Hellenistic–Roman Solunto (NW Sicily). The research aimed to characterize raw materials, reconstruct manufacturing sequences, and evaluate technological proficiency through mineralogical and petrochemical analyses.
G. Montana, G. Polizzi, C. Portale, M. Gasparo Morticelli, L. Randazzo   +4 more
wiley   +1 more source

Pozzolanic properties of residues of sugar industries (first part)

Materiales de Construccion, 2000
Non altered straw and sugar cane bagasse ash (CPC, CBC) collected directly from the boilers in the sugar industry and from non-controlled burning in the open fields turned up to be a reasonably good pozzolana, which can be utilized for the manufacture of
J. F. Martirena-Hernández, S. Betancourt-Rodríguez, B. Middendorf, A. Rubio, J. Martínez-Fernández, J. Machado López, R. González-López   +6 more
doaj   +1 more source

Microbial Deterioration Potential and Mitigation Strategies in Blended Cement Structures: A Review

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
Microbial‐induced deterioration (MID) is a threat to the durability of cement‐based materials (CBMs) particularly in sewer and wastewater systems. Whereas blended cements incorporating supplementary cementitious materials (SCMs) offer environmental benefits such as reduced carbon (IV) oxide (CO2) emissions and enhanced mechanical performance, their ...
Beatrice Wanjiru Mwangi, Genson Murithi, Reginah Ngari, Jackson Muthengia, Nancy Mweni Paul, Li Qingchao   +5 more
wiley   +1 more source

Bulk Electrical Resistivity as an Indicator of the Durability of Sustainable Concrete: Influence of Pozzolanic Admixtures

Applied Sciences
Premature deterioration of concrete structures in coastal areas requires a careful evaluation based on durability criteria. Electrical Resistivity (ER) serves as a valuable indicator of concrete durability, as it reflects how easily aggressive agents can
Lorena del Carmen Santos Cortés, Sergio Aurelio Zamora Castro, María Elena Tejeda del Cueto, Liliana Azotla-Cruz, Joaquín Sangabriel Lomeli, Óscar Velázquez Camilo   +5 more
doaj   +1 more source

Potencialidades de um caulim calcinado como material de substituição parcial do cimento portland em argamassas Potentialities of a calcined kaolin as material of partial replacement of portland cement in mortars

Revista Brasileira de Engenharia Agrícola e Ambiental, 2006
A utilização de argilas calcinadas na forma de metacaulinita, como material pozolânico para argamassas e concretos, tem recebido atenção considerável nos últimos anos.
Marilia P. de Oliveira, Normando P. Barbosa   +1 more
doaj   +1 more source

Development of Concrete Incorporating Recycled Aggregates, Hydrated Lime and Natural Volcanic Pozzolan

Infrastructures, 2021
Recycling of construction and demolition waste is a central point of discussion throughout the world. The application of recycled concrete as partial replacement of mineral aggregates in concrete mixes is one of the alternatives in the reduction of ...
Natividad Garcia-Troncoso, Bowen Xu, Wilhenn Probst-Pesantez   +2 more
doaj   +1 more source

Enhancing Expansive Soil Stability Using Agricultural Waste: Soybean Pod Ash and Banana Fiber

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
This study evaluates the efficacy of agricultural waste—soybean pod ash (SBPA) and banana fiber (BF)—as sustainable stabilizers for expansive soils in Jimma Town, Ethiopia. Soil samples from Kebele 5 and Ajip Kela (1.50 m depth) with the highest plasticity indices and lowest California bearing ratio (CBR) values were selected.
Mohammednur Shefedlu, Bushirelkerim Oumer, Anteneh Geremew, Shikha Binwal   +3 more
wiley   +1 more source