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Use of natural pozzolana as alternative to Portland cement with recycled pebbles for manufacture of concrete with environmental properties

Engineering for Rural Development
The construction industry is a major contributor to environmental degradation due to the widespread use of traditional building materials such as cement.
M. Wassouf, J. Omran, A. Kheirbek
semanticscholar   +1 more source

Osservazioni petrografiche su di una pozzolana del Vesuvio (“pozzolana di fuoco„)

Bulletin Volcanologique, 1930
L’auteur decrit la composition mineralogique et petrographique d’une pouzzolane du Vesuve, laquelle est formee de debris de roches du Somma-Vesuve et de scories de laves legerement cimentees par de la cendre extremement fine.
openaire   +1 more source

The mechanism of the hydration in the system C3S-pozzolana

Cement and Concrete Research, 1980
Abstract A mixture of five kinds of Japanese pozzolanas and synthesized pure C 3 S were hydrated. The hydration mechanism in the system C 3 S-pozzolana was investigated. The hydration of C 3 S was accelerated by the addition of pozzolanas. The reasons for the acceleration increase of the precipitation sites of hydrates and the increase of the ...
K. Ogawa   +3 more
openaire   +1 more source

Hygric Properties of HPC with Natural Pozzolana

Key Engineering Materials, 2016
The water vapour transport and the liquid water transport of high performance concrete (HPC) with the content of natural pozzolana are the described in this paper. Studied properties are presented by means of water vapour diffusion coefficient, water vapour diffusion resistance factor and absorption coefficient respectively. The natural pozzolana (NP),
Jaroslava Koťátková   +3 more
openaire   +1 more source

Understanding the role of natural pozzolana in regulating the early hydration reaction process and microstructure of Portland cement

Fullerenes, nanotubes, and carbon nanostructures
The present study examines the regulatory role of natural pozzolana (NP) on the early-age hydration process and microstructural development of Portland cement.
Li-Yun Yi, Dan Yang, Ju-Hong Chen
semanticscholar   +1 more source

Lime mortar with natural pozzolana

2008
The paper deals with the investigation of the mechanical behavior of lime mortar enriched with natural pozzolana, widely used in historical masonry. The study aims to investigate the mechanical behavior of natural pozzolana lime mortars, reproduced in laboratory by using different mix designs, as reported in historical Italian architectural treatises ...
SALA, Elisa   +2 more
openaire   +2 more sources

Nanomaterial-infused pozzolana portland cement composite: Exploring mechanical strength, durability, and microstructure properties

Fullerenes, nanotubes, and carbon nanostructures
In the present investigation, a comparison of Graphene Oxide (GO) and Functionalized Multiwalled Carbon Nanotubes (FMWCNTs) incorporated in Pozzolana Portland Cement (PPC) mortar was carried out to find their influence on mechanical and durability ...
Kanchna Bhatrola, N. C. Kothiyal
semanticscholar   +1 more source

Strength Characteristics of Bauxite Pozzolana Concrete

Journal of the Construction Division, 1978
Bauxite is currently mined in Ghana on a commercial basis. Beneficiation of the ore is undertaken before it is exported and during the beneficiation process significant amount of the ore estimated at between 20% and 25% are washed away as red mud. The red mud is dumped into large ponds where it is left to dry.
Vincent O. Nwoko, Alex A. Hammond
openaire   +1 more source

The effect of pozzolanas on the tricalcium aluminate hydration

Cement and Concrete Research, 1978
Abstract The effect of pozzolanas on the C 3 A hydration with and without lime and gypsum was examined. The addition of pozzolana lowers the heat evolution caused by C 3 A hydration. Lime combination with C 3 A and its hydration product is favoured by the addition of pozzolana, with a different mechanism of reaction depending on the presence of ...
Mario Collepardi   +3 more
openaire   +1 more source

Sustainable natural pozzolana concrete – A comparative study on its environmental performance against concretes with other industrial by-products

, 2020
With increasing environmental sustainability concerns in the construction industry and a demand for producing more durable and sustainable concrete, effort is devoted to producing concrete with Ordinary Portland cement (OPC) being substituted by ...
M. Hossain   +4 more
semanticscholar   +1 more source

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