Results 141 to 150 of about 30,775 (309)

Workability and mechanical properties of alkali activated slag concrete

open access: yes, 1999
Workability and mechanical properties of alkali activated slag ...
JG Sanjayan (14473050)   +1 more
core  

Real-Time Concrete Workability Estimation in Transit via an IoT-Enabled Cyber-Physical System

open access: yes
Concrete quality on construction sites depends on maintaining certain workability during transportation. However, traditional slump testing is manual and cannot assess concrete in transit. This study presents a cyber-physical system (CPS) integrating IoT
Michalis Ntoulmperis   +4 more
core   +1 more source

Influence of natural fibers on physical, mechanical, and fire‐resistant properties of microconcrete

open access: yesStructural Concrete, EarlyView.
Abstract This study examined the influence of natural fibers on the physical, mechanical, and fire‐resistant properties of microconcrete, in comparison with conventional polypropylene fibers used in cement composites. The fibers were characterized by FTIR and TGA/DSC to assess their composition and thermal stability, and FTIR was also performed after ...
Ivanka Netinger Grubeša   +5 more
wiley   +1 more source

Behavior of manufactured sand and recycled coarse aggregate concrete‐filled steel tubular stub columns with circular section

open access: yesStructural Concrete, EarlyView.
Abstract Accelerated urbanization has intensified environmental concerns due to excessive natural resource consumption and construction waste generation. Circular concrete‐filled steel tube (CFST) columns incorporating manufactured sand recycled coarse aggregate (MS‐RCA) concrete have emerged as an innovative composite element offering notable ...
Minsheng Guan   +7 more
wiley   +1 more source

Cold‐curing effects on the strength development and sulfuric acid resistance of basalt fiber‐reinforced hybrid alkali‐activated slag mortars

open access: yesStructural Concrete, EarlyView.
Abstract Cold weather conditions impose substantial constraints upon the performance and long‐term resilience of concrete materials. Alkali‐activated slag (AAS) presents itself as a promising substitute, exhibiting sustained hydraulic activity even when exposed to ambient conditions characterized by low temperatures.
Zeynep Bahçeci   +3 more
wiley   +1 more source

Durability performance of a high‐performance fiber‐reinforced concrete for bridge applications

open access: yesStructural Concrete, EarlyView.
Abstract This paper investigates the durability performance of a coarse‐aggregate high‐performance fiber‐reinforced concrete (HPFRC) developed as a cost‐efficient material solution for precast bridge applications. A comprehensive experimental program was conducted to assess the resistance of the material to the principal deterioration mechanisms ...
Rolando Baldiviezo   +6 more
wiley   +1 more source

Recreation of workers physical workability

open access: yes, 2013
Uurimistöö eesmärgiks oli uurida töötaja füüsilise töövõime rekreatsiooni, Eesti Maaülikooli rekreatsioonikeskuse keskonnas esinevaid ohutegureid ning neid hinnata, uurida sisekliimat ja määrata vaatlusaluse töö raskusaste.
Kõrgmaa, Kristjan
core  

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