Results 11 to 20 of about 304,397 (263)

The influence of slag content on the mechanical properties of high-strength concrete [PDF]

open access: yesArchives of Civil Engineering
In light of the current situation where excessive amounts of excavated earth from subway tunnel construction are being stacked with low utilization and value, this study used residue as a mineral admixture to investigate the effects of different ...
Xiaochun Zhao, Meijiu Zhao
doaj   +1 more source

Performance of dredged sediments based controlled low-strength material

open access: yesJournal of Sustainable Construction Materials and Technologies, 2022
The process of depleting the natural sources of virgin sand and aggregate makes it challenging to satisfy the demand for construction work. Therefore, in a context of sustainable construction, this study examined the feasibility of utilizing dredged ...
Pranshoo Solanki
doaj   +1 more source

Large-Scale Assessment of Health-Related Physical Fitness in French Older Adults: Feasibility and Validity

open access: yesFrontiers in Public Health, 2020
Objectives: This study aims to assess the validity, internal consistency, implementation, and feasibility of a sequence of tests, the Vitality Test Battery, designed to measure physical fitness, at a large scale in French older adults.Methods: A total of
Damien Mack-Inocentio   +11 more
doaj   +1 more source

Strength Performance on Different Mix of Cement-Sand Ratio and Sand Condition for Lightweight Foamed Concrete

open access: yesE3S Web of Conferences, 2018
Proper cement-sand ratio and water content can provide excellent consistency and stability for lightweight foamed concrete. The aims of this study are to investigate the comprehensive optimisation design mix of lightweight foamed concrete with different ...
Lee Yee Ling   +4 more
doaj   +1 more source

DEVELOPING SELF-CURING CEMENT SAND MORTAR USING SODIUM POLYACRYLATE [PDF]

open access: yesJournal of Engineering and Sustainable Development, 2019
As the sustainable construction intends to optimize the use of natural resources and because of the important of water resources, the self -curing could be assigned as sustainable strategy.This study introduces self-curing cement sand mortar with ...
Sa'ad Fahad Resan   +2 more
doaj   +3 more sources

Characteristics of Portland Cement Pastes Blended with Silica Nanoparticles

open access: yesTo Chemistry Journal, 2020
The effect of silica nanoparticles (SNP) addtion on the specific characteristics of Portland cement pastes was investigated. The results revealed that the addition of SNP to the fresh Portland cement pastes reduced both w/c ratio and setting times, but ...
Hassan Darwish
doaj   +2 more sources

Acid Mine Drainage Dynamics from a Paste Tailing Deposit: Effect of Sulfate Content on the Consistency and Chemical Stability after Storage

open access: yesMetals, 2021
Surface paste tailings’ disposal has emerged recently as an optimal and efficient method to favor tailings’ self-containment after being deposited into dams.
Eduardo Leiva   +4 more
doaj   +1 more source

Experimental Investigating the Effect of Non-steel Fibers on the Consistency and Mechanical Properties and Toughness of RCCP [PDF]

open access: yesپژوهش‌های زیرساخت‌های عمرانی, 2023
Roller-Compacted Concrete (RCC), which is a kind of dry consistency concrete with zero slump, has two various main applications, pavement and dams. But, owing to the benefits such as cost efficiency, low hydration heat, durability, and high speed of ...
Hosein Arabyarmohammadi   +2 more
doaj   +1 more source

Improved Strength of Peroxide-Bleached Deinked Pulp after TEMPO-Mediated Oxidation at Medium Consistency

open access: yesBioResources, 2015
Deinked pulp was pretreated using the 4-acetamido-2,2,6,6,- tetramethyl-pipelidine-1-oxyl radical (TEMPO)/NaBr/NaClO system and then bleached using hydrogen peroxide to achieve a medium pulp consistency. The effect of the amount of oxidant NaClO addition
Feiguo Hua   +4 more
doaj   +1 more source

Microstructural Characteristics, Modeling of Mechanical Strength and Thermal Performance of Industrial Waste Glass Blended Concrete

open access: yesApplied Sciences, 2022
The need to get rid of solid waste in the environment necessitates the incorporation of waste glass powder (WGP) in mortar and concrete. The blending of WGP (G) with ordinary Portland cement (OPC) is a valorization technique that is not only cost ...
Moruf Olalekan Yusuf   +7 more
doaj   +1 more source

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