Results 21 to 30 of about 3,765 (253)
Influence of Curing Age and Mix Composition on Compressive Strength of Volcanic Ash Blended Cement Laterized Concrete [PDF]
, 2012 This study investigates the influence of curing age and mix proportions on the compressive strength of volcanic ash (VA) blended cement laterized concrete. A total of 288 cubes of 100mm dimensions were cast and cured in water for 3, 7, 28, 56, 90 and 120
Babafemi, A. J +2 more
core +2 more sources
Ground waste ceramic brick effect at different times on mortar
Journal of Materials Research and Technology, 2023 The work aims to observe the effect of waste ceramic brick (WCB), ground in two times, 60 and 120 min for use in mortar. The crystalline phases presented in clays of the north of Rio de Janeiro have already been identified, indicating that after firing ...
Ana Luiza Campinho Paes +5 more
doaj +1 more source
Cements based on kaolinite waste [PDF]
, 2018 The cement industry involves high-energy consumption that generates high CO2 emissions into the atmosphere. Environmental concerns can be addressed by replacing parts of Portland cement clinkers with pozzolanic materials in mortars and concrete.
Fernández Carrasco, Lucía +5 more
core +8 more sources
Tratamentos térmico e químico para remoção de óxidos alcalinos de cinzas de capim elefante
Química Nova, 2014 Elephant grass ash (EGA) was produced at 700 °C, with two different treatments: hot water (EGAhw) or acid solution (EGAas). The efficiency of the treatments at removing the potassium oxide was evaluated with the aim of using the EGA as a pozzolanic ...
Erika Y. Nakanishi +5 more
doaj +1 more source
Wrist flexion rehabilitation device using arm mbed microcontroller for post-stroke patient [PDF]
, 2019 Rehabilitation is a process of recovery of an individual from disabling or functionally limiting condition, whether temporary or irreversible, participates to regain maximal function, independence, and restoration [1]. The purpose of rehabilitation is to
Chee Weng, Yap, Jumadi, Nur Anida
core +1 more source
Engineering and Applied Science Research, 2022 Engineering and Applied Science Research, 49, 4, 495 ...
Jhonatan A. Becerra-Duitama +1 more
openaire +2 more sources
Materiales de Construccion, 2006 The world-wide cement industry is seeking experimental avenues that will lead to cement production that is less energy-intensive, less damaging to the surrounding environment and less prolific in GHG emissions.
F. Puertas +5 more
doaj +1 more source
Zeolitic tuffs for acid mine drainage (AMD) treatment in Ecuador: breakthrough curves for Mn2+, Cd2+, Cr3+, Zn2+ and Al3+. DOI: 10.1007/s11356-016-8177-9 [PDF]
, 2016 Zeolitic tuff constitutes a technical and economical feasible alternative to manage acidic waters in initial phases of generation. A study of cation exchange with two zeolitic tuffs from Ecuador and one from Cuba has been conducted using breakthrough ...
Buenaño Guerra, Xavier +3 more
core +2 more sources
Feasibility of using pozzolanicity tests to assess reactivity of wood biomass fly ashes
Građevinar, 2021 Pozzolanic activity of materials can initially be assumed from the quantity of the pozzolanic oxides SiO2, Al2O3 and Fe2O3. Some of the methods for assessing pozzolanic reactivity of materials include measurement of CaO consumption (Frattini test ...
Karmen Kostanić Jurić +3 more
doaj +1 more source
Bentonites in Southern Spain. Characterization and Applications
Crystals, 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