Results 11 to 20 of about 517 (169)

Bending Strength of Connection Joints of Prestressed Reinforced Concrete Pipe Piles

Buildings, 2023
The connection joint of prestressed concrete pipe piles is a typical steel–concrete structure, and its bending strength has evolved into a critical factor affecting the safety of supporting structures in underground engineering.
Mengxiong Tang, Zao Ling, Yuliang Qi
doaj   +2 more sources

Soil compaction during harvest operations in five tropical soils with different textures under eucalyptus forests

Ciência e Agrotecnologia, 2018
Traffic of farm machinery during harvest and logging operations has been identified as the main source of soil structure degradation in forestry activity.
Paula Cristina Caruana Martins, Moacir de Souza Dias Junior, Ayodele Ebenezer Ajayi, Ernesto Norio Takahashi, Diego Tassinari   +4 more
doaj   +3 more sources

Soil precompression stress assessed from strain‐stress data in linear scale: The need for a physically based approach

Soil Science Society of America Journal
Abstract State‐of‐the‐art models for soil compaction express soil strength by the so‐called precompression stress. The idea is to avoid stresses higher than those previously exposed to the soil. However, the quantification of soil precompression stress generally implies a problematic logarithmic transformation of the applied stress ...
Per Schjønning, Michael Koppelgaard, Mathieu Lamandé   +2 more
openaire   +2 more sources

Hydro-Physical Properties of a Typic Hapludult under the Effect of Rice Husk Ash

Revista Brasileira de Ciência do Solo, 2016
The combustion of rice husk generates a partially burnt mixture called rice husk ash (RHA) that can be used as a source of nutrients to crops and as a conditioner of soil physical properties.
Gláucia Oliveira Islabão, Cláudia Liane Rodrigues de Lima, Ledemar Carlos Vahl, Luis Carlos Timm, Juliana Brito da Silva Teixeira   +4 more
doaj   +2 more sources

Topsoil Compaction Risk Based on the Different Responses of Soil Structure to Compaction Stress

Agronomy
Compaction leads to reduced crop yields, as the soil structure is destroyed. As soil structures respond differently to different degrees of compaction stress, early warnings for the risk of soil compaction caused by agricultural machinery need to be ...
Huiqing Zhang, Tingfeng He
doaj   +2 more sources

Comparison of field and laboratory models of the load bearing capacity in coffee plantations Comparação de modelos de capacidade de suporte de carga do solo de campo e laboratório em plantações de café

Ciência e Agrotecnologia, 2013
Precompression stress is an important property for assessment of tropical soil structure sustainability and is often determined in laboratory tests. The objective of this study was to compare the load bearing capacity models obtained with controlled ...
Piero Iori, Moacir de Souza Dias Junior, Ayodele Ebenezer Ajayi, Paulo Tácito Gontijo Guimarães, Paula Sant'Anna Moreira Pais, Maria Luiza de Carvalho Andrade   +5 more
doaj   +1 more source

CA–MQL grinding of zirconia engineering ceramics under precompressive stress

The International Journal of Advanced Manufacturing Technology, 2022
Abstract Engineering ceramics are widely used in aerospace, 3C electronics, life sciences and other fields. However, the hard brittleness of engineering ceramics makes it difficult to process, prone to damage during processing, and difficult to balance processing efficiency and quality.
Gaofeng Zhang, Wenbin Ma, Tiejun Song, Cezhi Du, Zhenyu Wang, Gang He, Hua Xie, Tao Jiang   +7 more
openaire   +1 more source

Effect of Land-use Management Systems on Coupled Hydraulic Mechanical Soil Processes Defining the Climate-Food-Energy-Water Nexus. [PDF]

Bulgarian Journal of Soil Science, 2019
Soils are the most critical life-supporting compartments of the biosphere. They provide numerous ecosystem services such as habitat for biodiversity, water and nutrients, as well as producing food, feed, fiber and energy.
Rainer Horn
doaj   +1 more source

Compressibility of a Cambisol Submitted to Periods of Rotational Grazing and Strategies to Avoid Additional Soil Compaction

Conservation, 2023
Soil compaction is one of the main causes of soil degradation, and some parameters have been used to characterize it, like those related to compressibility and the degree of compactness.
Luis Eduardo Akiyoshi Sanches Suzuki, Darcy Bitencourt Junior, Eloy Antonio Pauletto, Ezequiel Cesar Carvalho Miola, Pablo Rostirolla, Gilberto Strieder   +5 more
doaj   +1 more source

Prediction of geotechnical properties of deltaic clays by using regression analysis models [PDF]

Egyptian Journal of Pure and Applied Science, 2022
Establishment of any engineering structure on a compressible clay leads to settlement and/or failure through this clay. The amount of settlement is related mainly to the compressibility parameters while the failure to the undrained strength.
Marawan Shahien, Waleed Ogila
doaj   +1 more source