Results 21 to 30 of about 637,470 (280)

Numerical simulation of closed plastic impeller molding process and its parameter optimization

open access: yesScientific Reports, 2022
Aiming at the warping deformation and volume shrinkage of the closed plastic impeller, the relevant compression molding process parameters were optimized.Based on the theoretical equation of the pressing pressure for general sheet plastics, the ...
Mingyue Fang   +2 more
doaj   +1 more source

Part mass and shrinkage in micro injection moulding: statistical based optimisation using multiple quality criteria [PDF]

open access: yes, 2013
Purpose: The aim of this paper is to optimise process conditions in micro injection moulding (m-IM) to minimise shrinkage whilst maximising part mass.
Alcock, Jeffrey R.   +2 more
core   +1 more source

Application of Cement-Based Carbon Fiber Material in Construction of Building Durability

open access: yesInternational Journal of Analytical Chemistry, 2022
In order to solve the problem of drying shrinkage of cement-based carbon fiber materials in the early stage of hardening, the author proposes the application of cement-based carbon fiber materials in the construction of building durability.
Qiuhong Li   +3 more
doaj   +1 more source

Behavior of drying and plastic shrinkage of Portland cement concrete prepared and cured under harsh field

open access: yesDevelopments in the Built Environment, 2023
The shrinkage of concrete is crucial under aggressive environmental conditions to avoid short and long-term deterioration. ACI committee for hot weather concreting specifies 35 °C as the maximum limit of fresh concrete to mitigate problems associated ...
Muhammad Nasir   +4 more
doaj   +1 more source

Understanding the role of rheology in the plastic settlement and shrinkage cracking of early age concrete

open access: yesRILEM Technical Letters, 2022
Understanding the plastic (settlement/shrinkage) cracking phenomena of early-age concrete is important in-order to establish a holistic approach to minimise its occurrence.
John Temitope Kolawole   +2 more
doaj   +1 more source

Investigation of the Efficiency of Manufacturing Polymer Molds by FDM-Printing [PDF]

open access: yesE3S Web of Conferences, 2023
The results of experimental studies of the efficiency of manufacturing polymer foundry models by the FDM method are presented. Rational consumables for 3D-printing are revealed.
Krupennikov Oleg, Kiselev Evgeniy
doaj   +1 more source

Early Cracking Resistance of Basalt Fiber Bridge Deck Concrete in Hot and Humid Environment [PDF]

open access: yesZhengzhou Daxue xuebao. Gongxue ban, 2023
Aiming at the problems of cracking and the durability reduction in hot and humid areas of southern China, basalt fibers were selected as concrete reinforcement materials.
GUO Yinchuan   +4 more
doaj   +1 more source

Development of eco-friendly engineered cementitious composites using glass aggregates: Shrinkage properties

open access: yesCleaner Engineering and Technology, 2021
Generally, the absence of coarse aggregate coupled with high binder content in engineered cementitious composites (ECC) mixtures subjects it to high shrinkage despite the presence of fibres.
Adeyemi Adesina, Sreekanta Das
doaj   +1 more source

Early structure formation of foam concrete mix containing modifying admixture

open access: yesИнженерно-строительный журнал, 2015
Cement based foam concrete of natural aging experiences high shrinkage of foam concrete mix in the formwork and shrinkage strain when drying. When managing the microstructure of the composite, namely the change (acceleration) of the microstructure ...
A.B. Steshenko, A.I. Kudyakov
doaj   +1 more source

Modelling the Severity of Plastic Shrinkage in Cementitious Materials [PDF]

open access: yesProceedings of the International Conference on Civil Infrastructure and Construction (CIC 2020), 2020
"Plastic shrinkage cracking in cement-based materials occurs between the mixing and the final setting of the mixture, where rapid evaporation of the mixed water is the main cause behind the phenomenon. The induced cracks may impair the durability and sustainability of the structure by facilitating ingress of harmful materials into the concrete bulk. In
Sayahi, Faez   +4 more
openaire   +2 more sources

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