Results 21 to 30 of about 15,757 (248)

Chloride Ion Diffusion Resistance of Bulk Hydrophobic Concrete: Comparison of w/c and Dosages

open access: yesNordic Concrete Research, 2023
Post-cast application of hydrophobic agents onto hardened concrete is successful at reducing external ion diffusion into cement paste, this work examines pre-cast application of hydrophobic admixtures in fresh concrete.
Rogers Patrick   +4 more
doaj   +1 more source

Effect of Different Admixtures on Pore Characteristics, Permeability, Strength, and Anti-Stripping Property of Porous Concrete

open access: yesBuildings, 2022
To solve the problem of insufficient strength and durability of porous concrete pavement, seven different admixtures were used in this study so that the above properties could be optimized.
Yi Zhang   +4 more
doaj   +1 more source

The Lengths of Admixture Tracts [PDF]

open access: yesGenetics, 2014
Abstract The distribution of admixture tract lengths has received considerable attention, in part because it can be used to infer the timing of past gene flow events between populations. It is commonly assumed that these lengths can be modeled as independently and identically distributed (iid) exponential random variables.
Liang, Mason, Nielsen, Rasmus
openaire   +5 more sources

Plastic Shrinkage Cracking in Concrete

open access: yesProceedings, 2019
Plastic shrinkage cracking in concrete is mainly a physical process, in which chemical reactions between cement and water do not play a decisive role. It is commonly believed that rapid and excessive moisture loss, due to evaporation is the primary cause
Faez Sayahi   +3 more
doaj   +1 more source

NATURAL AND CHEMICAL ADMIXTURES IN CONCRETE- A REVIEW

open access: yesEurasian Journal of Science and Engineering, 2023
To understand the effect of different natural and chemical admixtures on the properties of conventional and high strength concrete, an extensive literature review was done. It is known that chemical admixtures are composed of substances that are added to
Ilham Ibrahim Mohammed   +1 more
doaj   +1 more source

Influence of Admixture on Phenotypes

open access: yesCurrent Protocols, 2023
AbstractIndividuals of European descent have historically been the focus of genetic studies and possess relatively homogenous genomes. As a result, analytical methods have been developed and optimized with such genomes in mind. African‐descent and Latino individuals generally possess genomes of greater architectural complexity due to mosaic genomic ...
Steven W. Brugger, Mary F. Davis
openaire   +2 more sources

Employing spatial, hybrid and amplitude roughness parameters for unveiling the surface roughness features of mineral and organic admixtures

open access: yesHeliyon, 2023
Scanning electron microscopy (SEM) permits to evaluate the surface morphology and surface roughness of pozzolans and admixtures. The field of mineral and organic admixtures has considerable interest in using SEM.
David Sinkhonde
doaj   +1 more source

Human genetic admixture

open access: yesPLOS Genetics, 2021
Throughout human history, large-scale migrations have facilitated the formation of populations with ancestry from multiple previously separated populations. This process leads to subsequent shuffling of genetic ancestry through recombination, producing variation in ancestry between populations, among individuals in a population, and along the genome ...
Katharine L. Korunes, Amy Goldberg
openaire   +4 more sources

Experimental investigation on the resistivity and mechanical properties of high-resistance cement-based grouting materials for mining

open access: yesFrontiers in Earth Science
The electrical characteristics of cement-based grouting materials are the foundation for implementing geophysical electrical exploration in coal mine grouting engineering.
Bin Xu   +8 more
doaj   +1 more source

All-in-One Pediatric Parenteral Nutrition Admixtures with an Extended Shelf Life—Insight in Correlations between Composition and Physicochemical Parameters

open access: yesPharmaceutics, 2021
The administration of three-in-one parenteral nutrition (PN) admixtures to pediatric patients requires special consideration, specifically concerning quality and physicochemical stability. The introduction of a new parenteral amino acid solution into the
Aleksandra Gostyńska   +4 more
doaj   +1 more source

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