Expansive soil

Part 2 book "Geotechnical engineering - Principles and practices of soil mechanics and foundation engineering" includes content: Shallow foundation i - ultimate bearing capacity; shallow foundation ii - safe bearing pressure and settlement calculation; shallow foundation iii - combined footings and mat foundations; deep foundation i - pile foundation; deep foundation ii - behavior of laterally loaded vertical and batter piles, deep foundation iii - drilled pier foundations; foundations on collapsible and expansive soils.

549p dianmotminh04 12-07-2024 0 0   Download

Using agricultural and industrial waste such as bagasse ash, groundnut shell ash and coal ash in stabilizing expansive soils are used as a subgrade material to reduce harmful impaction of swelling/shrinkage of expansive soils, reduce construction costs. It is also a solution for environmental protection.

9p visharma 20-10-2023 4 3   Download

Continued part 1, part 2 of ebook "Helical piles: A practical guide to design and installation" provides readers with contents including: chapter 9 - expansive soil resistance; chapter 10 - lateral load resistance; chapter 11 - corrosion and life expectancy; chapter 12 - foundation systems; chapter 13 - earth retention systems; chapter 14 - underpinning systems; chapter 15 - economics; chapter 16 - proprietary systems; chapter 17 - building codes;...

269p hanlinhchi 29-08-2023 5 3   Download

A retaining wall constructed on expansive soil can be subjected to lateral swelling pressures due to soil swelling, which may cause a significant horizontal deformation and bending of the retaining wall. In Australia, it is generally assumed that the backfill behind a retaining wall is non-expansive material. Therefore lateral swelling pressures induced by expansive soils are ignored in routine design.

115p runthenight07 01-03-2023 8 2   Download

Tunnels are an important component of the transportation and utility system of cities. They are being constructed at an increasing rate to facilitate the need for space expansion in densely populated urban areas and mega-cities. This paper is devoted to highlight the differences between the behavior of the subrectangular tunnels compared with the circular ones subjected to quasistatic loadings.

12p vibentley 08-09-2022 20 4   Download

Geosynthetics have been widely used as a specific reinforcement in order to support embankments constructed in areas subject to localized sinkholes. Well known for economic and environmental benefits, the solution works based on several mechanisms such as soil expansion, the effect of membrane and friction, and load transfer.

5p vivacation2711 23-10-2021 10 0   Download

This paper presents the results of an experimental investigation of the effect of wetting-drying cycles on the surface cracking and swell-shrink behavior of modified expansive soils. An image processing technique was employed to understand this effect by quantifying the surface crack area density, crack number, crack length, mean crack width, and absolute shrinkage.

13p cothumenhmong9 12-01-2021 8 2   Download

The management of domestic solid waste in this rural area should be paid attention to and controlled by agencies that can provide suitable solutions to prevent the environment from being polluted.

9p cothumenhmong9 12-01-2021 24 2   Download

Phosphorus is a major limiting factor for plant growth particularly in the tropics and subtropics areas. It play an important role in many biochemical process viz., energy storage and transfer, cell division, cell enlargement and several other processes in plants. The availability of P to plants is a problem owing to its slow diffusion and high fixation in soils. Due to low solubility and mobility in soil, phosphorus use efficiency is very low ranges from 10-20% in normal soil.

7p kethamoi6 29-06-2020 12 0   Download

Arid and semiarid regions are illustrious for stressed atmosphere primarily attributable to erratic precipitation, low fertility of soil, leading to low crop productivity with high uncertainty within the field conditions. In arid and semiarid areas all stresses preponderantly drought limits the expansion and yield of crops significantly inflicting the foremost fatal economic losses in agriculture.

7p trinhthamhodang1213 29-05-2020 6 0   Download

The water availability is limited, however demand of water is increasing many fold due to expansion of agriculture, growing population, rapid industrialization and economic development in India. Available water resources need to be managed properly to meet increasing demands of water. In this study, different hydrological processes as surface runoff, evapotranspiration and soil moisture were modeled to assess the groundwater recharge in a small watershed located in semi-arid region of Rajasthan, India.

14p kethamoi4 16-04-2020 15 1   Download

Rice is the staple food of Odisha in terms of area, production and yield. System of Rice Intensification (SRI) involves adoption of changes in management practices of rice cultivation creating a favourable condition for crop growth with less utilization of inputs. Despite the benefits, SRI has not adopted by the farmers as expected in the state. This paper attempted to analyse the perception of Odisha farmers regarding major constraints hindering widespread of SRI by different categories of farmers (i.e. adopters, dropouts and non-adopters) in the state and the positive impact of SRI.

9p trinhthamhodang3 22-02-2020 13 1   Download

Spices like black pepper, cardamom, tree spices such nutmeg, cinnamon, clove are perennials and ginger and turmeric are grown annually. Most of them are propagated by vegetative methods. Non- availability of quality planting material is one of the important production constraints that affect the area expansion or gap filling programmes. Each crop requires specific techniques and handling to produces for planting material production from proven mother plants. The black pepper cuttings collected from mother plant are further multiplied by employing suitable rapid multiplication techniques.

8p chauchaungayxua3 07-02-2020 16 0   Download

The aim of this study was to assess how the expansion of Calamagrostis epigejos influences the species composition and diversity of forest, clearing, and meadow communities as well as how habitat factors influence biometric variability and features determining the potential of Calamagrostis epigejos for expansion in the studied communities.

10p caplock2711 21-02-2019 15 1   Download

Land cover changes influence the biogeochemistry, hydrology, and climate of the earth. Studies that assessed land cover changes at the global scale mostly focused on: deforestation, cropland expansion, dry land degradation, urbanisation, pasture expansion, and agricultural intensification.

19p aquaman27 15-01-2019 21 2   Download

The major disadvantage of the Greacen et al. (1968) model is that it requires many laborious measurements of soil mechanical properties. A simpler approach was adopted by Romkens & Miller (1971), who equated the pressure required for void-ratio changes occurring in a cylinder of soil around a root with the pressure required for one-dimensional soil consolidation. The resulting equation was used to predict the rooting densities at which further root radial expansion would be inhibited by the expansion of neighbouring roots.

43p loixinloi 08-05-2013 40 4   Download

A second process was the expansion of soybeans and other crops in the cerrado (savannah) region of Brazil by using varieties, soil amendments and conservation tillage developed through long-standing public investment in research and development that allowed cultivation of acid soils that were previously considered unsuitable for agriculture. This was a major technological success that dramatically increased production and exports.

53p thieubaotrang 23-04-2013 72 2   Download

It is highly likely that by augmenting the amount of funding available to banks, securitization activity had a significant and positive impact on credit growth during the years prior to the credit crisis (Loutskina and Strahan, 2009, Altunbas et al., 2009). In a number of countries experiencing a period credit growth, securitization activity probably strengthened the feedback effect between increases in housing prices and the credit expansion.

31p enterroi 01-02-2013 56 4   Download

Prior to a trip to Canada, many think about a country with tremendously large areas containing some of the world’s most beautiful nature. Expansive forests, great lakes, roaring rivers and high mountains. True, this is all a big part of Canada’s trademark, but a number of cultural experiences await in the Canadian cities. Everything from small villages on the prairie, where only grain silos break the horizon, to modern cities with millions of inhabitants offering a hectic and, very lively, cultural milieu….

108p tuanloc_muido 11-12-2012 94 14   Download

Shouldn’t it be possible to conceal a house in an Alpine slope while still exploiting the wonderful views and allowing light to enter the building? Surprised that it was permissible to construct a pair of dwellings so close to the world famous thermal baths of Vals, the client seized the opportunity to develop the site, without disturbing the bath’s expansive views. The introduction of a central patio into the steep incline creates a large façade with considerable potential for window openings.

16p connhobinh 07-12-2012 45 3   Download