Results 41 to 50 of about 5,736 (202)

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

Study of Mortars Made with Natural and Artificial Pozzolans [PDF]

, 2019
The objective of this work is to evaluate the thermal activation potential of clay soils, particularly the clay fraction of dam mud, for the production of artificial pozzolan which can be substituted to cement in concrete and mortars applications and ...
BENAZZOUK, Amar, LAOUFI, Imene, LAOUFI, Laïd, SENHADJI, Yassine   +3 more
core  

Effects of Partial Substitution of Ordinary Portland Cement With Stone‐Cutting Dust, Limestone, and Natural Pozzolana on Compressive Strength and Microstructure

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
Rapid industrialization and urban growth have driven a rising demand for cement, yet ordinary Portland cement (OPC) production remains energy‐intensive and a major source of CO2 emissions. The partial substitution of OPC with supplementary cementitious materials (SCMs) offers a sustainable route to reduce environmental impact, production costs, and ...
Nancy Mweni Paul, Jackson Wachira Muthengia, Genson Murithi, Esther Wanja Nthiga, Joanne Ogunah, Reginah Wangui Ngari, Qian Fang   +6 more
wiley   +1 more source

Toughness increase of self compacting concrete reinforced with polypropylene short fibers

Materiales de Construccion, 2010
Increases in bending tests by the addition of low volume fractions of Polypropylene (PP) Short Fibers PP. These toughness increases are similar to those attained by Fiber Reinforced Concrete (FRC) referred elsewhere as Engineered Cementitious Composites (
G. Melián, G. Barluenga, F. Hernández-Olivares   +2 more
doaj   +1 more source

Effectiveness Assessment of Superplasticizer Admixtures: Case of Self-compacting Concrete Reinforced with Fine Mineral Fillers

Selected Scientific Papers: Journal of Civil Engineering, 2022
The use of superplasticizers in concrete production has become a common practice, especially when a high fluidity is required. On the other hand, the risk of segregation and the stability of these mixtures is ensured by the incorporation of a large ...
Oualit Mehena, Irekti Amar, Hami Brahim
doaj   +1 more source

The Effect of Granite Waste Powder as a Cement Substitute on the Mechanical Properties and Microstructure of Mortar

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
Granite is extensively used in the construction industry; however, substantial solid waste is produced during production. This study focused on the feasibility of replacing cement with granite powder (GP) in cement mortar by investigating various properties, like consistency, water retention, density, setting time, compressive strength, and flexural ...
Lijun Dou, Yuxi Liu, Xiaoxia Jia, Sihan Liu, Ziheng Huang, Arnab Biswas   +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

Investigation of Peculiarities in the Hardening Process of Portland Cements with Active Additives out of Waste

Medžiagotyra, 2011
This study deals with the impact of waste fluid cracking catalyst (FCC) and cupola dust (CD) on hardening process of various Portland cements (CEM I 42.5 R (PCR), CEM I 42.5 N (PCN), CEM II/A-S 42.5 N (PCSN)).
Jadvyga ŽVIRONAITĖ, Ina PUNDIENĖ, Valentin ANTONOVIČ, Valdas BALKEVIČIUS   +3 more
doaj   +1 more source

Synthesis and Characterization of Metakaolin‐Based Geopolymer for Industrial Application

Advances in Materials Science and Engineering, Volume 2026, Issue 1, 2026.
Materials with enhanced properties are currently in high demand. Consequently, the ability to synthesize these materials efficiently, using low energy and without adverse environmental impact, has become a critical research priority. For this reason, geopolymers present an attractive prospect for researchers in material science and engineering. In this
Kenneth Ejike Ibedu, Abdulfatai Adinoyi Murana, Aliyu Usman, Abdulmumin Ahmed Shuaibu, Mohammad Rezwan Habib   +4 more
wiley   +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