Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Moisture Content and Bulking of Aggregate

Moisture Content and Bulking of Aggregate

The moisture content of aggregates is a crucial factor in construction, particularly in concrete mixing, as it influences the total water required in the mix. Moisture content represents the water coated on the exterior surface of the aggregate existing in a saturated and surface-dry condition. The total water content of a moist aggregate is the sum of its moisture content and water absorption.
When aggregates are exposed to rain or sit in stockpiles, they absorb moisture, which must be...

Testing Water Quality

Testing Water Quality

When the quality of water for concrete preparation is uncertain, its impact on the setting time of cement and compressive strength of mortar is assessed by comparison with de-ionized or distilled water benchmarks. American Society for Testing and Materials (ASTM) C1602 requires the setting times to be within 90 minutes of the control, British Standard (BS) 3146:1980 allows a 30-minute variance in the initial setting, while British Standards European Norm (BS EN) 1008 specifies initial setting...

Compacting Factor test

Compacting Factor test

The compacting factor test is a method used to assess the workability of concrete. It is especially suitable for concrete mixes containing aggregates up to one and a half inches in size. This test involves specialized equipment consisting of two truncated cone-shaped hoppers and a cylinder, all with polished interior surfaces to minimize friction.
The procedure begins by placing concrete into the upper hopper without any compaction. Once filled, the bottom door of this hopper is opened,...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

In Vitro, Ex Vivo, and In Vivo Evidence of Nitrate-Reducing Activity in <i>Levilactobacillus brevis</i> CD2: A Potential Tool for Oral and Systemic Health Applications.

Foods (Basel, Switzerland)·2025

Same author

Gel Cleaning in Heritage: Comparison of the Water Release among Gels and Traditional Pads.

Gels (Basel, Switzerland)·2024

Same author

Assessing Mechanochemical Properties of Acrylonitrile Butadiene Styrene (ABS) Items in Cultural Heritage Through a Multimodal Spectroscopic Approach.

Applied spectroscopy·2024

Same author

Clarifying correct attributions in scientific literature: The case of the De Simone Formulation and the VSL#3®.

Clinical nutrition (Edinburgh, Scotland)·2024

Same author

Cleaner Leather Tanning and Post-Tanning Processes Using Oxidized Alginate as Biodegradable Tanning Agent and Nano-Hydroxyapatite as Potential Flame Retardant.

Polymers·2023

Same author

Correction: The Probiotic Mixture VSL#3 Accelerates Gastric Ulcer Healing by Stimulating Vascular Endothelial Growth Factor.

PloS one·2022

Search research articles

Related Experiment Video

Updated: Jul 21, 2026

Biocontained Carcass Composting for Control of Infectious Disease Outbreak in Livestock

Biocontained Carcass Composting for Control of Infectious Disease Outbreak in Livestock

Published on: May 6, 2010

Evaluation of commercial compost quality.

Umberto Tomati¹, Monica Belardinelli, Monica Andreu

¹Istituto di Biologia Agroambientale e Forestale, Consiglio Nazionale delle Ricerche, Area della Ricerca di Roma, Via Salaria Km 29,300; 00016 Monterotondo Scalo, Roma, Italy.

Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA

|December 25, 2002

Summary

Commercial compost quality varies significantly based on starting materials, impacting heavy metal content and safety. Proper regulation of compost production and characterization is crucial for safe, effective use.

More Related Videos

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

Published on: November 28, 2014

A Plate Competition Assay As a Quick Preliminary Assessment of Disease Suppression

A Plate Competition Assay As a Quick Preliminary Assessment of Disease Suppression

Published on: October 28, 2018

Related Experiment Videos

Last Updated: Jul 21, 2026

Biocontained Carcass Composting for Control of Infectious Disease Outbreak in Livestock

Biocontained Carcass Composting for Control of Infectious Disease Outbreak in Livestock

Published on: May 6, 2010

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

Published on: November 28, 2014

A Plate Competition Assay As a Quick Preliminary Assessment of Disease Suppression

A Plate Competition Assay As a Quick Preliminary Assessment of Disease Suppression

Published on: October 28, 2018

Area of Science:

Environmental Science
Soil Science
Biotechnology

Background:

Commercial composts are widely used in agriculture and horticulture.
Assessing compost quality is essential to ensure environmental safety and efficacy.
Variability in commercial composts necessitates rigorous characterization.

Purpose of the Study:

To evaluate the chemical, physical, and biological characteristics of ten commercial composts.
To compare commercial composts with a compost produced under controlled conditions.
To analyze humic acids for molecular weight and spectral properties to assess humification and potential risks.

Main Methods:

Evaluation of chemical, physical, and biological compost properties.
Extraction and analysis of humic acids using Fourier-Transform Infrared (FT-IR) spectroscopy, Carbon-13 Cross-Polarization Magic Angle Spinning Nuclear Magnetic Resonance ((13)C CP-MAS NMR) spectroscopy, and molecular weight determination.
Comparison with a reference compost produced in controlled conditions.

Main Results:

The origin of raw materials significantly influences compost quality, particularly heavy metal content and genotoxic effects.
Humic acids from commercial composts often contain a high percentage of low molecular weight fractions, suggesting incomplete composting.
FT-IR and (13)C CP-MAS NMR spectra confirmed varying levels of humification and functional group composition.

Conclusions:

Commercial composts can exhibit harmful properties linked to their source materials.
An uncorrected composting process may lead to the presence of undesirable low molecular weight fractions in humic acids.
Implementing regulations for compost production and characterization is recommended to ensure product safety and quality.