Results 21 to 30 of about 1,637 (211)

Experimental Investigation on the Mechanical Properties of Polypropylene Hybrid Fiber-Reinforced Roller-Compacted Concrete Pavements

International Journal of Concrete Structures and Materials, 2022
To explore the effect of multi-scale polypropylene fiber (PPF) hybridization on the mechanical properties of roller-compacted concrete (RCC), the early-age (3, 7, 14, 28 days) compressive strength, splitting tensile strength and uniaxial tensile test of ...
Ninghui Liang, Xiufei You, Ru Yan, Qingxu Miao, Xinrong Liu   +4 more
doaj   +1 more source

Effect of Hydrated Lime on the Properties of Roller Compacted Concrete

Journal of Engineering, 2023
Roller compacted concrete (RCC) is a concrete of no slump, no reinforcement, no finishing, and compacted using vibratory roller. When compared with conventional concrete, it contains less water content when compared to traditional concrete.
Saad I. Sarsam, Abeer A. Salih, Suha Ghazi Abdullah   +2 more
doaj   +1 more source

Evaluating the Influence of Carbon Fiber on the Mechanical Characteristics and Electrical Conductivity of Roller‐Compacted Concrete Containing Waste Ceramic Aggregates Exposed to Freeze‐Thaw Cycling

Advances in Materials Science and Engineering, Volume 2023, Issue 1, 2023., 2023
Traditional methods of removing snow and ice from pavements using chemicals are combined with mechanical removal that involves a lot of manpower, advanced machinery, chemicals that are harmful to the environment, and damage to pavements. Furthermore, annually, large quantities of ceramic materials become waste due to their fragile nature during ...
Danial Nasr, Rezvan Babagoli, Mohsen Rezaei, Arsalan Andarz, Shengwen Tang   +4 more
wiley   +1 more source

A Study on the Abrasion Resistance of Hydraulic Structures with Different Repair Mortars

Journal of Engineering, Volume 2023, Issue 1, 2023., 2023
One of the main problems with hydraulic structures is that floating silt, gravel, ice sand, boulders, and other materials circulating over a concrete surface have an abrasive effect that causes hydraulic structures to abrade. Abrasion causes concrete to degrade, which could eventually expose the reinforcing to corrosion.
Getinet Melesse, Hibretu Kaske Kassa, Minale Geta, Tigist Simachew, Tewodros Mamo, Adal Mengesha, Tegegn Asale, Hao Yi   +7 more
wiley   +1 more source

Multiobjective Optimization Method for the Diversion Scheme of Lean Concrete Overtopped Cofferdam under Multiconstraint Conditions

Geofluids, Volume 2023, Issue 1, 2023., 2023
In this paper, a multiobjective optimization method considering both time limit and cost of lean cemented overtopped cofferdam diversion scheme as objectives is proposed. In the multiobjective optimization method, the main constraint condition is the reliability of the construction period, which also considers the design specification, dam site ...
Zhengyu Dong, Kebin Shi, Hao Wu
wiley   +1 more source

Fibrous roller-compacted concrete with recycled materials - Feasibility study [PDF]

, 2015
This paper presents fundamental work done to enable fibre reinforcement of roller-compacted concrete (RCC). Procedures for mixing and casting two types of steel fibres in RCC were developed.
ACI, ACI (American Concrete Institute), BSI, BSI, BSI, EC (European Commission), Harris Angelakopoulos, JSCE (Japan Society of Civil Engineers), Kypros Pilakoutas, Makoto K, Nanni A, Newman AJ, Panos Papastergiou, PCA (Portland Cement Association), Rilem, Timoshenko SP   +15 more
core   +1 more source

Effect of Wrapping on Post‐Tensioned Beams Strengthened with Natural Sisal and Jute FRP Using Finite Element Analysis

Advances in Civil Engineering, Volume 2023, Issue 1, 2023., 2023
Existing buildings are retrofitted to formulate them to be more resistant to seismic activity, earth motion, and other natural disasters. Many available reinforced concrete buildings across the globe are in desperate need of rehabilitation, repair, or replacement owing to degradation caused by a variety of reasons such as corrosion, lack of detailing ...
D. P. Archana, H. N. Jagannatha Reddy, R. Prabhakar, M. U. Aswath, Basavaraju Paruti, Khaled Ghaedi   +5 more
wiley   +1 more source

Potential impacts of failure of the Grand Ethiopian Renaissance Dam on downstream countries

Journal of Flood Risk Management, Volume 15, Issue 2, June 2022., 2022
Abstract This study assesses the potential downstream impacts in the event of a flood due to failure, either structural or operational, of the Grand Ethiopian renaissance dam (GERD). The following two failure scenarios were modeled as part of this study: Dam Break (DB) and MisGuided Dam Operation (MGDO) as a result of a false flood signature.
Mohamed Rami Mahmoud, Hussam Fahmy, Luis A. Garcia   +2 more
wiley   +1 more source

Relationship between compressive and tensile strengths of roller-compacted concrete

Journal of Traffic and Transportation Engineering (English ed. Online), 2018
The abstract roller-compacted concrete (RCC) is a zero slump concrete comprising the same materials as that of conventional concrete with different proportions. The RCC must be compacted to reach its final form.
Chamroeun Chhorn, Seong Jae Hong, Seung Woo Lee   +2 more
doaj   +1 more source

Innovation structures of very lean roller compacted concrete dams

Structural Mechanics of Engineering Constructions and Buildings, 2021
Over the past 20 years, rolled compacted concrete (RCC) dams have continued to be built in many countries because of their technical and economic advantages over conventional dams of vibrating concrete and embankment dams.
Yury P. Lyapichev
doaj   +1 more source