Results 61 to 70 of about 237,483 (294)

Influence of Brazilian fly ash fineness on the cementing efficiency factor, compressive strength and Young's modulus of concrete

Developments in the Built Environment, 2023
This work investigates the cementing efficiency, determined by the k-value, of a Brazilian fly ash. The analyzed variables are the fly ash fineness and content, the water content in the mixtures and age of concrete. Further, the influence of the fineness
Margareth da Silva Magalhães, Bruna Figueiredo Cezar, Pedro Rodrigues Lustosa   +2 more
doaj   +1 more source

UTILIZATION OF WASTE MATERIALS OF PRIDNEPROVSKA TPP [PDF]

, 2018
Study the possibility of fly ashes full recycling of Pridneprovska Thermal Power Plant (PTPP) by their refining in industrially valuable products using gravity classification of dry ash from electrostatic precipitators and water-
PERKOV, Yevhen
core  

Optimization of Magnesium Potassium Phosphate Cements Using Ultrafine Fly Ash and Fly Ash

ACS Sustainable Chemistry & Engineering, 2023
The effect of ultrafine fly ash (UFA) and fly ash (FA) on the physical properties, phase assemblage, and microstructure of magnesium potassium phosphate cement (MKPC) was investigated. This study revealed that the UFA addition does not affect the calorimetry hydration peak associated with MKPC formation when normalized to the reactive components (MgO ...
Tan, Y., Gardner, L.J., Walkley, B., Hussein, O.H., Ding, H., Sun, S., Yu, H., Hyatt, N.C.   +7 more
openaire   +3 more sources

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

Utilization of fly ash and bottom ash to increase the value of unconfined compression strength on subgrade

Teknika, 2022
Soil is the most important part to support all traffic loads or construction loads placed on it. Soils that have low bearing capacity, such as clay, need stabilization techniques to increase the carrying capacity of the soil.
Woelandari Fathonah, Rama Indera Kusuma, Enden Mina, Restu Wigati, Dwi Esti Intari, Nada Shafa Soraya Gandakusumah   +5 more
doaj   +1 more source

Study of cement-fly ash paste exposed to sodium sulfate solutions with different concentrations at different temperatures [PDF]

, 2010
When concrete elements are partially exposed to sulfate environment, in the upper part of concrete elements above ground an aquiferous zone containing almost saturated and high pH value (> 12.5) sulfate pore solution will be formed.
De Schutter, Geert, Deng, Dehua, Liu, Yunhua, Liu, Zanqun   +3 more
core  

Carbon emission assessment of tunnel infrastructures: From construction to operation

Deep Underground Science and Engineering, EarlyView.
This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long, Wout Broere, Xuehui Zhang, Tian Xia, Richard de Nijs   +4 more
wiley   +1 more source

Highly Processed Foods in Binge‐Eating Episodes: The Importance of Improving Food Reporting

International Journal of Eating Disorders, EarlyView.
ABSTRACT Objective Over the past 60 years, the proportion of highly processed foods rich in refined carbohydrates and added fats in the food environment has increased, coinciding with a rise in binge eating. While past research has focused on individual vulnerabilities for binge eating, emerging evidence suggests highly processed foods may exacerbate ...
Ingrid A. Worth, Tera L. Fazzino, Kendrin R. Sonneville, Kelly L. Klump, Ashley N. Gearhardt   +4 more
wiley   +1 more source

Effect of Fly Ash on Geotechnical Properties of Expansive soil

Journal of Engineering and Sustainable Development, 2012
This paper investigated the effect of fly ash addition on geotechnical properties of expansive soil. Classification tests, consistency limits test, specific gravity test, compaction test, direct shear test, swell percentage, and swell pressure tests ...
Hayder A. Hasan
doaj  

Dynamic Nonlinear and Residual Deformation Behaviors of the Fly Ash-Modified Loess

Shock and Vibration, 2021
Metastable loess soils can deform, inducing geological and engineering disasters. Therefore, the behavior of the loess under dynamic load is gaining massive attention from researchers to improve the strength of the soils.
Qian Wang, Jun Wang, Xiumei Zhong, Haiping Ma, Xiaowei Xu   +4 more
doaj   +1 more source