Results 101 to 110 of about 7,667 (214)

Assessment of Radioecological Safety of Coals and Ash and Slag Waste

TRUDY UNIVERSITETA
The analysis of statistical data on the natural radioactivity of coals from various deposits was carried out. It was noted that natural radioactivity is mainly caused by the presence of radioactive nuclides of uranium, thorium and potassium in coals, the concentration of which varies significantly. Fossil coals of Kazakhstan are generally characterized
Dmitri PAK, Yuri PAK, Diana IBRAGIMOVA, Аnar ТЕBAYEVA, Nikita NIKOLAYENKO   +4 more
openaire   +1 more source

Experimental investigation on utilization of substitute building materials in concrete using neural networks [PDF]

E3S Web of Conferences
The replacement of cement with sugarcane bagasse ash in concrete is considered due to its rich properties of projecting pozzolanic activity. The availability of aggregates is becoming scarce as a result of the non-renewable characteristic of fine and ...
Kumar V Prem, P Manikandan, Indu Matasugur, Thanusha Gutthi Reddy, Mounikareddy Kesamareddy, Sameer Basha Khodgaad, Madhusudhan Komera   +6 more
doaj   +1 more source

Feasibility study on coal based solid waste as a soil additive

Scientific Reports
Coal resources are extensive exploitation and utilization. As a result, a large amount of coal based solid waste such as coal gangue, fly ash, and coal gasification slag was generated.
Nan Guo, Lu Bai, Yingming Yang, Fei Wang
doaj   +1 more source

Studying Natural Radioactivity of Coals and Ash and Slag Waste as Potential Raw Materials for Quality Assessment and Extraction of Rare Earth Elements

Geosciences
A significant portion of coal mined in Kazakhstan is mainly used for fuel energy and metallurgy. Approximately 60% of electricity is generated by coal-fired power engineering.
Yuriy Pak, Dmitriy Pak, Pyotr Kropachev, Vladimir Matonin, Diana Ibragimova, Anar Tebayeva, Pavel Timoshenko, Natalya Tsoy, Yelena Tseshkovskaya   +8 more
doaj   +1 more source

Preparation of alkali-activated steel slag-fly ash based full solid waste filling material and strength formation mechanism research

Meitan kexue jishu
To utilize steel slag solid waste resources, this study developed a fully solid-waste-based cemented coal backfill material using alkali-activated steel slag-fly ash cementitious material as a cement substitute and coal gangue as aggregate.
Tingye QI, Siyuan CHENG, Guorui FENG, Linfei WANG, Hongtao XU, Lubin LI, Xinkai QI, Kexin XU, Xingyue YANG   +8 more
doaj   +1 more source

Light-transmitting concrete using ash and slag, and glass waste [PDF]

Introduction. The article discusses the potential for producing “green” light-transmitting concrete products in Vietnam using the available resources of ash and slag and glass waste, which will contribute to the development of a closed-cycle economy ...
Boris I. Bulgakov, Sofia I. Bazhenova, Lam V. Tang, Thanh X. Le, Olga V. Aleksandrova   +4 more
core   +1 more source

Technology of complex processing of ash and slag waste

TRENDS IN THE DEVELOPMENT OF SCIENCE AND EDUCATION, 2021
V.S. Rimkevich, A.A. Pushkin, I.V. Girenko   +2 more
openaire   +1 more source

The study of the freeze-thaw resistance and carbonation resistance of manufactured sand-RAC based on fly ash and slag powder

Materials Research Express
To advance the use of industrial solid waste and recycled concrete, this study explores the impact of fly ash and slag powder on the mechanical properties, freeze–thaw resistance, and carbonation resistance of manufactured sand recycled aggregate ...
Xiong Wei, Zhang Shanjun, Yi Junjie, Wang Xiaoqing   +3 more
doaj   +1 more source

Use of fly ash, blast furnace slag and chemical gypsum for the synthesis of calcium sulfoaluminate-based cements

, 1995
This paper presents a study on early strength cements based on calcium sulfoaluminate, C4A3$. These cements can be produced at temperatures ~300°C lower than normal portland cement and they also can be synthesized using industrial process wastes and by ...
G. Belz, MARROCCOLI, Milena, VALENTI, Gian Lorenzo, L. Santoro, N. Sherman, J. Beretka   +5 more
core  

Extraction of Carbon from Fine Coal Gasification Slag by Hydrophobic-hydrophilic Separation

Kuangchan zonghe liyong
This is an article in the field of mining engineering. Coal gasification slag is a type of solid waste generated during the coal gasification process. The presence of residual carbon significantly limits its potential for reuse and recycling.
Zhonghua XUE, Lianping DONG, Minqiang FAN, Chongyi YANG, Jiancheng WANG, Weiren BAO   +5 more
doaj   +1 more source