Results 11 to 20 of about 290,735 (262)

Multi-objective optimization on mix proportions of HSHPC applied to SRC composite structures [PDF]

open access: yesInternational Journal for Simulation and Multidisciplinary Design Optimization, 2008
The fine bond behaviour between steel shape and concrete is the base of their cooperation. For designing high strength and high performance concrete (HSHPC) applied to steel reinforced concrete (SRC) structures, a mathematical model of multi-objective
Zheng Shan-Suo   +5 more
doaj   +1 more source

Mixed Member Proportional with Faithful Accounting [PDF]

open access: yesSSRN Electronic Journal, 2021
With present (2021) tally rules, the number of seats in the Bundestag is highly volatile. In 2017 it got 709 seats, 111 of them extra-ordinary. The rules may double the influence of a voter who splits the ballot, contrary to a goal of equal influence; increased assembly size is a concomitant. The paper explains when and how this happens.
openaire   +2 more sources

Bayesian-Convolutional Neural Network Model Transfer Learning for Image Detection of Concrete Water-Binder Ratio

open access: yesIEEE Access, 2020
Since concrete is still the most widely used building material at present, the phenomenon of engineering accidents caused by inaccurate mix proportion is extremely prominent.
Han Yang, Shuangjian Jiao, Peng Sun
doaj   +1 more source

Influence of Mix Proportions on Rheological Properties, Air Content of Wet Shotcrete—A Case Study

open access: yesApplied Sciences, 2021
To study the influence of different mix proportions on the fresh properties of wet shotcrete, the rheological properties and air content of wet shotcrete with different admixtures before pumping were measured.
Jun Xie   +3 more
doaj   +1 more source

Modified Artificial Neural Networks and Support Vector Regression to Predict Lateral Pressure Exerted by Fresh Concrete on Formwork

open access: yesInternational Journal of Concrete Structures and Materials, 2022
In this study, a modified Artificial Neural Network (ANN) and Support Vector Regression (SVR) with three different optimization algorithms (Genetic, Salp Swarm and Grasshopper) were used to establish an accurate and easy-to-use module to predict the ...
Amirreza Kandiri   +3 more
doaj   +1 more source

Study on rheological properties of warm mix large proportion recycled asphalt

open access: yesMaterials Research Express, 2022
In order to explore the rheological properties of high content warm mix recycled asphalt binder, recycled asphalt was added into warm mix asphalt to prepare warm mix recycled asphalt.
Zhenxia Li   +7 more
doaj   +1 more source

The Optimization of Mix Proportion of Hot Mix Asphalt for Sustainable Flexible Pavements: Experimental Study and Grey Taguchi Relational Analysis [PDF]

open access: yesJournal of Soft Computing in Civil Engineering, 2023
Most of the Indian black topped roads have been damaged due to adverse weather and heavy load distresses. Many researchers have focused on improving durability of Hot Mix Asphalt (HMA) pavements.
Samanasa Krishna Rao, P. Sravana
doaj   +1 more source

Intelligent prediction of the frost resistance of high-performance concrete: a machine learning method

open access: yesJournal of Civil Engineering and Management, 2023
Frost resistance in very cold areas is an important engineering issue for the durability of concrete, and the efficient and accurate prediction of the frost resistance of concrete is a crucial basis for determining reasonable design mix proportions. For
Jian Zhang   +5 more
doaj   +1 more source

Research and application of pulverized coal ash ceramsite concrete isolation wall

open access: yesMeikuang Anquan, 2021
In order to solve the problem of spontaneous combustion of residual coal in goaf caused by air leakage due to loose sealing at both ends during delayed mining.
LI Zhiyong   +3 more
doaj   +1 more source

Augmented mixed models for clustered proportion data [PDF]

open access: yesStatistical Methods in Medical Research, 2014
Often in biomedical research, we deal with continuous (clustered) proportion responses ranging between zero and one quantifying the disease status of the cluster units. Interestingly, the study population might also consist of relatively disease-free as well as highly diseased subjects, contributing to proportion values in the interval [0, 1 ...
Dipankar, Bandyopadhyay   +2 more
openaire   +2 more sources

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