Results 41 to 50 of about 3,478 (197)

High temperature fracture behavior and damage evolution of recycled aggregate concrete produced from metakaolin modified parent concrete

open access: yesStructural Concrete, EarlyView.
Abstract The increasing use of recycled aggregate concrete (RAC) offers significant environmental benefits by reducing construction and demolition waste; however, its fracture performance and damage evolution under elevated temperatures remain insufficiently understood, particularly when recycled aggregates are derived from metakaolin modified parent ...
Zubair Yousuf, Viktor Hlavička
wiley   +1 more source

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

open access: yesApplied 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   +5 more
doaj   +1 more source

A Comparison between Natural Pozzolana and Fly Ash Replacements on the Mechanical Properties of Concrete

open access: yesThe International Conference on Civil Infrastructure and Construction, 2023
This study investigates the effect of Natural Pozzolana (NP) and Fly Ash (FA) substitutes on concrete's mechanical and microstructural properties. Mixes containing 10 - 50 % cement substitute ratios were prepared and tested for flexure and compressive ...
Mervat O. Aburumman   +5 more
semanticscholar   +1 more source

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

open access: yesArchaeometry, 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   +4 more
wiley   +1 more source

Pozzolanic properties of residues of sugar industries (first part)

open access: yesMateriales 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   +6 more
doaj   +1 more source

The difference between Sand and Pozzolana [PDF]

open access: yesJournal of Roman Studies, 1913
In spite of the amount which recent publications have added to our knowledge of Roman building methods and materials, there is still some inaccuracy to be noted in the use of terms due very often to a misconception of the chemical constituents of the materials in question.
openaire   +2 more sources

Mechanical and Durability Performance of Concrete Incorporating Shredded Waste Polyethylene Terephthalate (PET) as Partial Fine Aggregate Replacement

open access: yesEngineering Reports, Volume 8, Issue 11, November 2026.
Incorporating shredded waste PET as a partial fine aggregate replacement up to 20%$$ 20\% $$ in C‐25 concrete provides a sustainable recycling solution, maintaining low water permeability and acceptable structural strength across all tested replacement levels. ABSTRACT The growing demand for concrete has increased the consumption of natural sand, while
Yeabsra Mulugeta Alamir   +4 more
wiley   +1 more source

Improving the sustainability of oil well cementing operations: blending Portland cement with pozzolana

open access: yesJournal of the Ghana Institution of Engineering (JGhIE), 2023
Cementing is one of the most critical drilling operations in the oil and gas industry. However, the production and utilization of cement is a major emitter of CO2 into the atmosphere.
Josephine Amoah   +4 more
semanticscholar   +1 more source

Sustainable and Seismically Resilient Confined Masonry: Global Progress in Research and Design Practice

open access: yesEarthquake Spectra, Volume 42, Issue 4, November 2026.
Modern confined masonry (CM) construction consists of masonry walls confined by reinforced concrete (RC) tie‐columns and tie‐beams. When built correctly, CM buildings have shown good performance in earthquake's shaking. Even though CM construction has been practised for almost a century in some Latin American countries, its use and standardisation are ...
Ahsana Parammal Vatteri   +23 more
wiley   +1 more source

Comparison between Portland Pozzolana Cement & Processed Fly Ash blended Ordinary Portland Cement [PDF]

open access: yes, 2013
This paper presents a comparison between two different procedures for  the use of Fly ash (FA) in cement industry. The first which is very often used is by adding FA to clinker as in the manufacture of Portland Pozzolana Cement (PPC).The second which is ...
Rajdev, Rajendra   +2 more
core   +1 more source

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