Results 11 to 20 of about 237,483 (294)

Young children's perspectives of time: New directions for co‐constructing understandings of quality in ECEC

open access: yesBritish Educational Research Journal, EarlyView., 2023
Abstract Children's relationship with time in preschools is an under‐researched area. Young children rarely know how to measure time using a clock, but their experiences of time may contribute to understanding children's well‐being and debates about quality in preschools.
Kristín Dýrfjörð   +3 more
wiley   +1 more source

NPK 15-10-12 dengan Pengisi Abu Terbang: Pengembangan Pupuk dan Pengujian pada Tomat

open access: yesJurnal Ilmu Pertanian Indonesia, 2022
PT Pupuk Sriwidjaja Palembang (PSP) produces 1,222 tons fly ash per month from the operation of a coal boiler with a capacity of 1x23 MW. Fly ash has potential physical properties and mineral content.
Pebrianto Harnawan   +2 more
doaj   +1 more source

Influence of Fly Ash Addition on Behavior of Soft Clayey Soil [PDF]

open access: yesEngineering and Technology Journal, 2020
This paper investigates the impact of the fly Ash addition on the Geotechnical properties of soft soil as well as chooses the optimum percentage added of fly ash.
Hussein Karim   +2 more
doaj   +1 more source

Removal of Boron from aqueous solutions by adsorption using fly ash, zeolite and demineralized lignite [PDF]

open access: yes, 2009
In the present study for the purpose of removal of boron from water by adsorption using adsorbents like fly ash, natural zeolite and demineralized lignite was investigated.
Yuksel, Seren   +3 more
core   +2 more sources

Cyclic resistance of fly ash influenced by anisotropic stress condition, sand contents, and gravel content

open access: yesSoils and Foundations, 2022
A series of cyclic triaxial tests were performed to study the effect of anisotropic stress, sand content (in a fly ash-sand mixture), and addition of gravel on the cyclic resistance of fly ash.
Zhen-Zhen Nong   +3 more
doaj   +1 more source

Reviews on the Properties of Aggregates made with or without Geopolymerisation Method [PDF]

open access: yes, 2013
Aggregates are popular for use in concrete and lightweight concrete applications. Recent research shows that the by-product materials such as fly ash can be used as raw material in producing aggregates and lightweight aggregates.
Abdul Razak, Rafiza   +5 more
core   +1 more source

Research progress on fly ash foundation technology to prevent and control spontaneous combustion of coal in mines

open access: yesMeitan kexue jishu, 2023
Coal is the main energy source in China, which is also an important guarantee for the safety and stability of the national power supply as well as economic development. However, the coal combustion process for power generation will produce a large amount
QIN Botao   +4 more
doaj   +1 more source

Probabilistic modeling of one dimensional water movement and leaching from highway embankments containing secondary materials [PDF]

open access: yes, 2005
Predictive methods for contaminant release from virgin and secondary road construction materials are important for evaluating potential long-term soil and groundwater contamination from highways.
Apul, Defne S.   +5 more
core   +2 more sources

Influence of biomass fly ash blended with bituminous coal fly ash on the properties of concrete

open access: yesBudownictwo o Zoptymalizowanym Potencjale Energetycznym, 2020
There is a growing concern over the insufficient utilization of by-products from biomass combustion in Poland. Moreover, the concrete industry faces the threat of inadequate supplies of good quality coal fly ash.
Jakub Popławski
doaj   +1 more source

A Review on the Application of Circulating Fluidized Bed Fly Ash in Building Materials

open access: yesAdvances in Materials Science and Engineering, 2022
Circulating fluidized bed (CFB)-based coal burning technology is a type of clean coal combustion technology. Owing to its characteristics of low temperature combustion and desulfurization in furnace, the CFB fly ash is quite different from ordinary fly ...
Guanhua Jia, Yanlin Wang, Fengling Yang
doaj   +1 more source

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