Results 11 to 20 of about 8,920 (223)

Bentonites in Southern Spain. Characterization and Applications

open access: yesCrystals, 2021
The objective of this work was to investigate and demonstrate the pozzolanic properties of the bentonites found at the San José–Los Escullos deposit, located in the southeast of the Iberian Peninsula, to be used in the manufacturing of more durable and ...
Jorge Luis Costafreda   +1 more
doaj   +1 more source

Assessment of mortar evolution in pig slurry by mechanical and ultrasonic measurements [PDF]

open access: yes, 2010
This work presents the results obtained in a long-term experiment focused on the study of the evolution of cementitious materials immersed in pig slurry at real conditions.
González Hernández, Margarita   +3 more
core   +2 more sources

Effect of Locust Bean Pod Ash and Eggshell Ash on the Mortar Compressive and Flexural Strengths of Cement Blends [PDF]

open access: yes, 2020
An increase in the generation of biogenic wastes such as locust bean pods and eggshells coupled with the need to drive sustainability in the cement industry has led the use of these wastes as cement replacement materials.
Jibril, Abubakar   +2 more
core   +2 more sources

Hydration of Portland-Pozzolanic Cements

open access: yesTransactions of the Indian Ceramic Society, 1982
Portland-pozzolanic cements were prepared by gradual replacement of Portland cement by pozzolana. Calcined common clay and china clay were used as two different pozzolanas. Sulphated Portland-pozzolanic cements were prepared by incorporating gypsum. Hydration values were measured on curing these cements separately in water and in 5% MgSO4, solution. On
E.S. Newman, L.S. Wells
openaire   +2 more sources

Influence of low-grade materials as clinker substitute on the rheological behavior, hydration and mechanical performance of ternary cements

open access: yesCase Studies in Construction Materials, 2021
This study aims to evaluate the influence of low-grade local materials as clinker substitute in ternary cements, with calcined clay (30 wt%) and limestone (15 wt%), also known as LC³ cements.
C.S. Malacarne   +5 more
doaj   +1 more source

Sustainable low-carbon binders and concretes [PDF]

open access: yesE3S Web of Conferences, 2020
Sustainable development depends on a consistency of interests, social, ecological and economic, and that the interests are evaluated in a balanced manner.
Sanytsky Myroslav   +3 more
doaj   +1 more source

Las puzolanas y el ahorro energético en los materiales de construcción

open access: yesMateriales de Construccion, 1983
This discussion commences with some general comments on the energy crisis and its impact on the cement industry, with the corresponding coal reconversion problems.
Francisco Soria Santamaría
doaj   +1 more source

Contribución al análisis y estudio de las posibilidades de variación de la cantidad de yeso, CaS04.2 H2O, como agresivo, del método acelerado de ensayo ASTM C 452 (1) (2) y (3). Parte IIB

open access: yesMateriales de Construccion, 1989
The reader should first refer to the summary of the IA(1), IB(2) and IIA(3) parts of this work (published in Materiales de Construcción nos. 209, 211 and 212, respectively) in order to have a clearer idea of the subject being dealt with herein.
Rafael Talero Morales
doaj   +1 more source

Properties of Portland-Composite Cements with metakaolin: Commercial and manufactured by Thermal Activation of Serbian Kaolin Clay

open access: yesMATEC Web of Conferences, 2012
Portland-composite cements (CEM II) were prepared with addition of 5 to 35% of metakaolin (MK), manufactured by thermal activation/calcination of Serbian kaolin clay, and commercial matakaolin (CMK).
Mitrovic A., Nikolic D.
doaj   +1 more source

Accelerated and natural carbonation of concrete with high volumes of fly ash : chemical, mineralogical and microstructural effects [PDF]

open access: yes, 2019
Today, a rather poor carbonation resistance is being reported for high-volume fly ash (HVFA) binder systems. This conclusion is usually drawn from accelerated carbonation experiments conducted at CO2 levels that highly exceed the natural atmospheric CO2 ...
De Belie, Nele   +2 more
core   +1 more source

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