Results 21 to 30 of about 26,050 (260)

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

Plastic shrinkage cracking of concrete − roles of osmotic suction [PDF]

open access: yesMagazine of Concrete Research, 2011
Plastic shrinkage cracking of concrete occurs when the stresses arising in the concrete, due to a combination of suction and restraints of deformation such as reinforcement or formwork, equal its strength. However, three different types of suctions should be distinguished, namely total, matric and osmotic suctions.
Dao, Vinh T. N.   +2 more
openaire   +3 more sources

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

Shrinkage and Strength Behavior of Highly Plastic Clay Improved by Brick Dust

open access: yesJournal of Engineering, 2020
Highly plastic soils exhibit unfavorited properties upon saturation, which produce different defects in engineering structures. Attempts were made by researchers to proffer solutions to these defects by experimenting in practical ways.
Ali F. Al-Baidhani, Abbas J. Al-Taie
doaj   +1 more source

Parameter Optimization of PET Plastic Preform Bottles in Injection Molding Process Using Grey-Based Taguchi Method

open access: yesAdvances in Materials Science and Engineering, 2022
The paper investigated the optimization design of plastic injection molding process parameters for preformed bottle production using the grey-Taguchi method to minimize shrinkage defects.
Ermias Aswossie Berihun   +1 more
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

Some Geotechnical Properties of Plastic Soil Enhanced with Cement Dust

open access: yesJournal of Engineering, 2021
Plastic soil exhibits unfavorited geotechnical properties (when saturation), which causes negative defects to engineering structures. Different attempts (included various materials) were conducted to proffer solutions to such defects by experimenting in ...
Abeer F. Hussein   +2 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

The effect of fibers on the loss of water by evaporation and shrinkage of concrete

open access: yesRevista IBRACON de Estruturas e Materiais
Shrinkage is one of the least desirable attributes in concrete. Large areas of exposed concrete surfaces , such as in shotcrete tunnel linings, where it is practically impossible to make a moist cure, are highly susceptible to plastic shrinkage at early ...
N. M. P. Pillar, W. L. Repette
doaj   +1 more source

Plastic and early-age shrinkage of ultra-high performance concrete (UHPC): Experimental study of the effect of water to binder ratios, silica fume dosages under controlled curing conditions

open access: yesCase Studies in Construction Materials, 2022
The magnitude of early age shrinkage of Ultra High Performance Concrete (UHPC) is markedly different from normal and high strength concretes. A series of experiments were performed to determine the influence of water to binder ratio and silica fume ...
Ming Sun   +2 more
doaj   +1 more source

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