Results 11 to 20 of about 613,206 (345)

Comparison of specific energy and efficiency of solar dryer under the influence of collector type and investigation of some characteristics of dried tomatoes [PDF]

open access: yesمجله پژوهش‌های علوم و صنایع غذایی ایران, 2021
Introduction: Drying of agricultural products is one of the main ways to prevent product spoilage. There are several methods to dry agricultural products, including direct sunlight, hot, sunny weather, microwave, vacuum, and freezer which use different ...
Hadi Samimi Akhijahani
doaj   +1 more source

Material and Process Parameters that Affect Accuracy in Stereolithography [PDF]

open access: yes, 1993
Experimental real time linear shrinkage rate measurements simulating stereolithography are used in an analysis of shrinkage during line drawing in stereolithography.
Chartoff, Richard P.   +2 more
core   +1 more source

Restrained Shrinkage of Fly Ash Based Geopolymer Concrete and Analysis of Long Term Shrinkage Prediction Models [PDF]

open access: yes, 2017
The research presented in this manuscript describes the procedure to quantify the restrained shrinkage of geopolymer concrete (GPC) using ring specimen. Massive concrete structures are susceptible to shrinkage and thermal cracking.
Ahmed, Mahbub K   +3 more
core   +3 more sources

A Low-Autogenous-Shrinkage Alkali-Activated Slag and Fly Ash Concrete

open access: yesApplied Sciences, 2020
Alkali-activated slag and fly ash (AASF) materials are emerging as promising alternatives to conventional Portland cement. Despite the superior mechanical properties of AASF materials, they are known to show large autogenous shrinkage, which hinders the ...
Zhenming Li   +4 more
doaj   +1 more source

Prediction of the sintering shrinkage of glass-alumina functionally graded materials by a BP artificial neural network [PDF]

open access: yesScience of Sintering, 2009
The shrinkage of the glass-alumina functionally graded materials (G-A FGMs) as a function of sintering temperature, layers, and the alumina content was predicted by a back propagation artificial neural network (BP-ANN).
Yu C.L.   +5 more
doaj   +1 more source

Dynamic Shrinkage Processes [PDF]

open access: yes, 2018
We propose a novel class of dynamic shrinkage processes for Bayesian time series and regression analysis. Building upon a global-local framework of prior construction, in which continuous scale mixtures of Gaussian distributions are employed for both ...
Abramovich   +44 more
core   +2 more sources

Experimental Research on Compressive and Shrinkage Properties of ECC Containing Ceramic Wastes Under Different Curing Conditions

open access: yesFrontiers in Materials, 2021
Engineered cementitious composites (ECCs) suffer from high shrinkage and low early strength due to large dosage of cementitious materials and slow hydration of fly ash.
Yan Xiong   +5 more
doaj   +1 more source

Experimental theoretical modelling of concrete shrinkage in massive structures [PDF]

open access: yesE3S Web of Conferences
In spite of the high culture of modern construction, the majority of massive structures erected in different countries of the world cannot avoid shrinkage cracks during the curing process, which negatively affect both the stiffness and durability of such
Arleninov Petr   +2 more
doaj   +1 more source

Studying the Effect of Shrinkage on the Bond Strength of Mortars, Applied to Substrate Concrete, Using “Friction-Transfer” and “Pull-Off” Methods [PDF]

open access: yesJournal of Structural and Construction Engineering, 2021
Considering the differences that exist between the laboratory and site conditions, the in-situ estimation of bond strength of repair mortars is important. Therefore, in this paper, the results obtained from the use of two methods, “Friction-transfer” and
Mahmood Naderi, Ali Saberi Varzaneh
doaj   +1 more source

In-Situ Strain Measurements in Large Volumes of Hardening Epoxy Using Optical Backscatter Reflectometry

open access: yesApplied Sciences, 2018
Some large engineering structures are made by casting polymers into a mold. The structures can have complicated geometries and may be filled with other components, such as electrical transformers.
Søren Heinze, Andreas T. Echtermeyer
doaj   +1 more source

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