Results 71 to 80 of about 64,484 (293)

UTILIZATION OF TORAY FLY ASH AS FILLER SUBSTITUTION IN THE HOT ROLLED SHEET-WEARING COURSE (HRS-WC) MIXTURE

Journal of the Civil Engineering Forum, 2012
In road construction materials, the utilization of fly ash as additive materials is limited and also small in quantity, while the disposal of fly ash is quite high. An abundance of fly ash can be found at PT Toray Company in Jakarta and Surabaya.
F. Candra, L. B. Suparma
doaj   +1 more source

Gels for CO2 geo‐storage and conformance control: A systemic review of behavior and performance

Deep Underground Science and Engineering, EarlyView.
This review provides a systemic evaluation of potential sealants used in CO2 subsurface storage practices. Critical analyses of how external factors like CO2, pH, brine salinity and hardness, rock mineralogy, pressure, temperature, and injectivity could affect the performance of different sealants are provided. Abstract Carbon capture and storage (CCS)
Funsho Afolabi, Iskandar Dzulkarnain, Sunil Kwon, Dmitriy A. Martyushev, Jang H. Lee, Shiferaw R. Jufar, Fahd Al‐Akbari   +6 more
wiley   +1 more source

Remediation and monitoring of abandoned mines

International Journal of Mining Science and Technology, 2017
This paper describes a recent study on using fly ash for backfilling abandoned room and pillar mines. Detailed investigations on fly ash properties such as the strength and stiffness of settled fly ash, flowability of fly ash grout, as well as chemistry ...
Baotang Shen, Brett Poulsen, Xun Luo, Johnny Qin, Ramesh Thiruvenkatachari, Yi Duan   +5 more
doaj   +1 more source

Temperature‐dependent shear behavior and constitutive model of the rock–concrete interface

Deep Underground Science and Engineering, EarlyView.
Shear tests were conducted to investigate the temperature‐dependent shear behavior of the rock–concrete interface, highlighting the interaction between the surrounding rock and the lining during tunnel fires. Under experimental conditions, concrete exhibited greater temperature sensitivity than rock, with the shear fracture surface transitioning from ...
Hongbin Chen, Yujing Jiang, Rui Pan, Bin Wang, Sunhao Zhang, Jinge Zhang, Xianzhuang Ma   +6 more
wiley   +1 more source

The Influence of Ground Fly Ash on Cement Hydration and Mechanical Property of Mortar

Advances in Civil Engineering, 2018
In this study, the ground fly ash is made of ordinary grade I fly ash by grinding. Compared with grade I fly ash, the influence of ground fly ash on cement hydration and mechanical property of mortar was investigated. The results show that ground fly ash
Jingjing Feng, Jianwei Sun, Peiyu Yan
doaj   +1 more source

Engineering Practice of Inclined Longwall Roof Cutting and Pressure Relief Gob‐Retaining Roadway Technology in Feitian Coal Mine

Energy Science &Engineering, EarlyView.
Feitian Coal Mine Inclined Longwall Roof Cutting and Pressure Relief Gob‐Retaining Technology: Research Background, Core Innovations and Future Directions. ABSTRACT To address the issues of tight mining‐excavation scheduling and challenging gas management in coal mines, this study proposes a technical scheme for inclined longwall roof cutting and ...
Xianbi Xu, Zhenqian Ma, Jun Huang, Yuankun Zhu   +3 more
wiley   +1 more source

Physical Changes and Performance at High Temperatures of Cement‐Slag Blended Concretes

Fire and Materials, EarlyView.
ABSTRACT This study investigates the physical transformations and assesses the performance of blended‐cement concretes exposed to temperatures ranging from ambient to 800°C. Three different grades of cement: 32.5, 42.5, and 52.5, with various contents of ground granulated blast furnace slag (GGBFS), were employed in this research.
Marcin Sundin, Magdalena Rajczakowska, John L. Provis, Hans Hedlund, Andrzej Cwirzen   +4 more
wiley   +1 more source

Investigation of Fresh Properties of Self-Leveling Cement-Based Pastes with CFB Fly Ash as an SCM

Buildings
The incorporation of circulating fluidized bed (CFB) fly ash into self-leveling cement-based (SLC) paste production presents significant environmental advantages. However, its addition deteriorates the fresh properties of the paste, posing challenges for
Chun-Ran Wu, Wei Tang, Yan-Lin Huo, Bao-Jian Zhan, Shi-Cong Kou   +4 more
doaj   +1 more source

Insects as Food and Feed Source: A Comprehensive Review on Nutritional Value, Food Safety Concern, Environmental Benefits, Economic Potential, Technological Innovations, Challenges, and Future Prospects

Food Frontiers, EarlyView.
Edible insects offer a sustainable protein source, requiring fewer resources than traditional livestock. Despite challenges, they have the potential to enhance food security and sustainability for a growing global population. ABSTRACT As the world faces an escalating protein crisis amid climate change, population growth, and resource scarcity, edible ...
Anil Gautam, Ishwari Gyawali, Sushma Poudel, Sachin Devkota, Rabin Acharya, Milan Kandel, Deepak Subedi   +6 more
wiley   +1 more source

Effect of class F fly ash on the durability properties of concrete

Sustainable Environment Research, 2018
The present study evaluates the application of class F fly ash as a partial replacement of binder in concrete. The compressive strength of the fly ash samples showed low early compressive strength comparing to the control samples.
Ashish Kumer Saha
doaj   +1 more source