Results 131 to 140 of about 38,317 (293)

Lightweight concrete containing recycled aggregates

Magazine of Civil Engineering
This study investigated the replacement of fine concrete aggregates with recycled aggregate. The results showed that the effect of recycled aggregate, so that, replacing 25, 50, 75 and 100 % of natural aggregate led to an 8, 23, 15 and 11 %, respectively, increase in the compressive strength of lightweight concrete samples.
openaire   +2 more sources

Distilling food web dynamics: top–down and bottom–up drivers of extinction and trophic cascades

Oikos, EarlyView.
Quantifying population dynamics is a fundamental challenge in ecology and evolutionary biology, particularly for species that are cryptic, microscopic, or extinct. Traditional approaches rely on continuous representations of population size, but in many cases, the precise number of individuals is unknowable.
Justin D. Yeakel
wiley   +1 more source

Stress-Strain Model for Lightweight Aggregate Concrete Reinforced with Carbon-Polypropylene Hybrid Fibers. [PDF]

Polymers (Basel), 2022
Yang X, Wu T, Liu X.
europepmc   +1 more source

Electrospun Nanofibres for Load‐Bearing Composite Materials—A Review of Techniques, Mechanical Properties and Durability

Polymer Composites, EarlyView.
Electrospun nanofibre for load‐bearing composite materials. ABSTRACT Electrospun nanofibres are emerging nanomaterials prized for their scalability, high surface area to volume ratio and yield. Their effectiveness in improving the mechanical properties of fiber reinforced composites is widely reported. Nanofibres could activate multiscale toughness and
Usaid Ahmed Shakil, Petr Hájek
wiley   +1 more source

Numerical Deformation Analysis of Reinforced Lightweight Aggregate Concrete Flexural Members. [PDF]

Materials (Basel), 2022
Bacinskas D, Rumsys D, Kaklauskas G.
europepmc   +1 more source

Reka bentuk pembelajaran atas talian bagi program kejuruteraan mekanikal Kolej Vokasional [PDF]

, 2018
Reka bentuk pembelajaran atas talian merupakan suatu proses yang menyokong kepada konsep pembelajaran bestari di sekolah. Kajian ini bertujuan untuk mengenalpasti reka bentuk pembelajaran atas talian bagi program Kejuruteraan Mekanikal Kolej Vokasional ...
Ghani, Noraiysah
core  

Why Autonomous Vehicles Are Not Ready Yet: A Multi‐Disciplinary Review of Problems, Attempted Solutions, and Future Directions

Journal of Field Robotics, EarlyView.
ABSTRACT Personal autonomous vehicles can sense their surrounding environment, plan their route, and drive with little or no involvement of human drivers. Despite the latest technological advancements and the hopeful announcements made by leading entrepreneurs, to date no personal vehicle is approved for road circulation in a “fully” or “semi ...
Xingshuai Dong, Massimiliano Cappuccio, Fady Alnajjar, Luqman Ali, Hamad Al Jassmi, Essam Debie, Milad Ghasrikhouzani, Alessandro Lanteri, Tate McGregor, Oleksandra Molloy, Alice Plebe, Michael Regan, Eduardo Sandoval, Dongmo Zhang   +13 more
wiley   +1 more source

Optimising dosage of Lytag used as coarse aggregate in lightweight aggregate concretes

Journal of the South African Institution of Civil Engineers, 2013
Lytag, manufactured first by pelletisation of a mixture of fly ash, bentonite and water, and then by sintering the spherical pellets at about 1 300°C, is used as coarse aggregate for producing lightweight plain and structural concrete mixtures.
S Ahmad, Y S Sallam, I A R Al-Hashmi
doaj  

Mechanical and Electrical Characteristics of Lightweight Aggregate Concrete Reinforced with Steel Fibers. [PDF]

Materials (Basel), 2021
Hong SH, Choi JS, Yuan TF, Yoon YS.
europepmc   +1 more source

Autogenous shrinkage, speciality of high performance concretes [PDF]

, 2015
Autogenous shrinkage is a consequence of self dessication in pores of hardened cement paste and is, at high performance concrete significantly greater than that of the ordinary concretes, mainly due to low water to cement ratio.
Vogrič, Nina
core   +1 more source