Results 1 to 10 of about 107 (85)

Effect of adding natural pozzolana on geotechnical properties of lime-stabilized clayey soil

Journal of Rock Mechanics and Geotechnical Engineering, 2016
Clayey soils in Syria cover a total area of more than 20,000 km2 of the country, most of which are located in the southwestern region. In many places of the country, the clayey soils caused severe damage to infrastructures.
Aref al-Swaidani, Ibrahim Hammoud, Ayman Meziab   +2 more
doaj   +3 more sources

Natural pozzolana of micro and nano-size as cementitious additive: resistance of concrete/mortar to chloride and acid attack

Cogent Engineering, 2021
The goal of the current paper is to study the effect of natural pozzolana (NP) when ground to a micro and nano size on some concrete properties. Syria is rich in natural pozzolana with an estimated quantity of nearly 1 billion tonnes.
Aref M. Al-swaidani
doaj   +2 more sources

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
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.
Nancy Mweni Paul, Jackson Wachira Muthengia, Genson Murithi, Esther Wanja Nthiga, Joanne Ogunah, Reginah Wangui Ngari   +5 more
doaj   +2 more sources

Coupled Effect of temperature and additions on the rheological behavior of concrete equivalent mortars (CEM) [PDF]

MATEC Web of Conferences, 2020
The aim of this work is to study the influence of mineral additions on the rheological behavior of low impact environmental concrete with its concrete equivalent mortar (CEM) at different temperatures.The experimental study is carried out on cement-based
Dada El Hadja, Belaidi Akram Salah-Eddine, Soualhi Hamza, Kadri El Hadj   +3 more
doaj   +1 more source

Sustainable production of blended cement in Pakistan through addition of natural pozzolana [PDF]

Chemical Industry and Chemical Engineering Quarterly, 2016
In this work pozzolana deposits of district Swabi, Pakistan were investigated for partial substitution of Portland cement along with limestone filler.
Ahmad Muhammad Imran, Sajjad Muhammad, Khan Irfan Ahmed, Durrani Amina, Durrani Ali Ahmed, Gul Saeed, Ullah Asmat   +6 more
doaj   +1 more source

Experimental data on permeability-related properties of concrete containing nano natural pozzolana as cement replacement

Data in Brief, 2022
The addition of supplementary cementitious materials (SCM), particularly at nano level, leads to several benefits, such as the reduced permeability of concrete matrix, which consequently leads to having more durable and sustainable concrete.
Aref M. al-Swaidani
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

Fly Ash and Natural Pozzolana Impacts on Sustainable Concrete Permeability and Mechanical Properties

Buildings, 2023
This paper studied the effect of fly ash (FA) and natural pozzolana (NP) as partial cement substitutes on sustainable concrete permeability and mechanical and microstructural properties.
Mohamed O. Mohsen, Mervat O. Aburumman, Malak M. Al Diseet, Ramzi Taha, Mu’tasim Abdel-Jaber, Ahmed Senouci, Ala Abu Taqa   +6 more
doaj   +1 more source

Natural Mordenite from Spain as Pozzolana

Molecules, 2020
This work deals with anomalous concentrations of natural mordenite in the southeast of Spain. The X-ray diffraction (XRD) and scanning electron microscopy (SEM) studies evidenced that the samples contain mainly monomineral zeolitic phase of mordenite (70%
Leticia Presa, Jorge L. Costafreda, Domingo A. Martín, Isabel Díaz   +3 more
doaj   +1 more source

Effect of thermo-activation on mechanical strengths and chlorides permeability in pozzolanic materials

Case Studies in Construction Materials, 2018
The present research aimed to study the combined effects of natural pozzolana and curing on the compressive and flexural strengths of mortars; it also investigated the chloride permeability of concrete.
M. Elbar, Y. Senhadji, A.S. Benosman, H. Khelafi, M. Mouli   +4 more
doaj   +1 more source