Changes in the Physical Properties of Soil Clays due to Precipitated Aluminum and Iron Hydroxides: II. Colloidal Interactions in the Absence of Drying

1976 ◽  
Vol 40 (4) ◽  
pp. 516-520 ◽  
Author(s):  
S. A. El-Swaify
Keyword(s):  
Physical Properties ◽  
Iron Hydroxides ◽  
Colloidal Interactions ◽  
Soil Clays ◽  
Properties Of Soil

scholarly journals Pengaruh Waktu Pemeraman Dengan Penambahan Kapur Sebagai Bahan Additve Pada Tanah Lempung Ekspansif Terhadap Nilai CBR Tanah

2019 ◽  
Vol 3 (2) ◽  
pp. 97
Author(s):  
Bahtiar Efendi Situmorang ◽  
Melloukey Ardan
Keyword(s):  
Physical Properties ◽  
Strong Support ◽  
Essential Element ◽  
Soil Physical Properties ◽  
California Bearing Ratio ◽  
Curing Time ◽  
Soil Stabilisation ◽  
Soil Clays ◽  
Under Construction ◽  
Properties Of Soil

<p><em>The soil is an essential element of a structure under construction so that the soil should have a good carrying capacity. But the fact the field is found soil that has the low bearing capacity, so it is necessary to conduct soil stabilisation with lime. The study aims to determine the percentage that is effective in adding lime and the effect of adding lime to the soil physical properties change in terms of the value of CBR (California Bearing Ratio) to the long curing time. This research was conducted in the laboratory, by testing the physical properties of soil and the strong support of land (CBR) with the addition of lime variation of 1%, 3%, and 5% by long curing 0, 4, 7 and 14 days. Tests were conducted with two treatments, soil samples were cured first and then compacted and samples were pressed first and brooded. The result is the value of CBR.</em><em> %. From the results of the value of the California Bearing Ratio can be seen that the addition of sand quarsa on soil clays showed an increase in the value of the California Bearing Ratio in soil clays.</em></p>

Mechanical and Physical Properties of Soil-Cement Blocks Reinforced with Mineral Wool and Sisal Fiber

2017 ◽  
Vol 29 (3) ◽  
pp. 04016225 ◽  
Author(s):  
Diego Alejandro Gutiérrez-Orrego ◽  
Edwin Fabián Garcia-Aristizabal ◽  
Maryory Astrid Gomez-Botero
Keyword(s):  
Physical Properties ◽  
Mineral Wool ◽  
Sisal Fiber ◽  
Soil Cement ◽  
Mechanical And Physical Properties ◽  
Properties Of Soil

scholarly journals Pengaruh Sifat Fisik Tanah terhadap Hama Simphylid Pada tanaman Nanas (Ananas comosus (L.) Merr) di PT. Great Giant Pineapple Terbanggi Besar Lampung Tengah

2017 ◽  
Vol 15 (3) ◽  
Author(s):  
Sandi Aji ◽  
Afandi Afandi ◽  
Lestari Wibowo ◽  
K.E.S. Manik
Keyword(s):  
Physical Properties ◽  
High Hardness ◽  
Soil Physical Properties ◽  
Soil Sampling ◽  
Soil Science ◽  
Ananas Comosus ◽  
Survey Method ◽  
Soil Pests ◽  
Poor Soil ◽  
Properties Of Soil

This research was conducted in the planting area of pineapple (Ananas comosus) PT. GGP Terbanggi Besar Central Lampung indicated attacked by pests simphylid in March 2014 until May 2014. Analysis of soil physical properties carried out in the Laboratory of Soil Science, Department of Agrotechnology, Faculty of Agriculture, University of Lampung. The method used in this study is a survey method. Soil sampling conducted at three locations indicated simphylid pests. Soil sampling done at some point and some depth. Results from this research that pest symphilid most numerous in one location with a number of acquisition 172 tail where the location of the physical properties of good land which the density value of the content is low, the total pore low, macropores and high hardness low ground , allowing sinphylid be able to live and thrive. While at the location of two and three with the condition density value of the content is high, the total pore high, macropores low, and violence high soil pests simphylid not so much discovered as simphylid can not multiply and survive on the physical condition of poor soil Keywords: Pineapple, Symphilid, and physical properties of soil

scholarly journals THE MODIFICATION OF PHYSICAL PROPERTIES OF THE SOIL UNDER THE INFLUENCE OF SOME CONVENTIONAL AND UNCONVENTIONAL TILLAGE SYSTEMS AND CORRELATION BETWEEN SOME OF THE SOIL COMPACTATION INDICATORS AND YIELDS

1970 ◽  
Vol 63 ◽  
Author(s):  
L. Raus ◽  
G. Jitareanu
Keyword(s):  
Physical Properties ◽  
Soil Properties ◽  
Management Practice ◽  
Soil Bulk Density ◽  
Physical Conditions ◽  
Complex Interactions ◽  
Tillage System ◽  
Tillage Operation ◽  
Crop Parameters ◽  
Properties Of Soil

Optimal crop rooting soil physical conditions are a result of complex interactions between soil strength and oxygen and water supply to plant roots. Spatial/temporal variability in soil properties can be critical in the evaluation of the effects of tillage management practice on soil and crop parameters. In this paper tillage were evaluated for theirs effects on soil physical and hydrological properties. Tillage treatments were plough to 20 cm, plough to 30 cm, chisel and disc harrow applied to wheat in to been/ wheat/ maize rotation. The experiments have been conducted in the Didactic Station of the USAMV – Iasi, Ezăreni Farm, during the period between 2002-2004, on a cambic chernozem with 3,4 % humus and pH 7. Tillage system modify, at least temporarily, some of the physical properties of soil, such as soil bulk density, penetration resistance, soil porosity and soil structural stability. Hydraulic properties of the soil did not differ significantly. All the tillage operation was significantly different in their effects on soil properties.

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