saudienglishsoil in arab countryسعودى

الأربعاء، 27 مايو 2015

soil in arab country

10,000 years, the earth has been used as a building material. There are eighteen famous main ways to use the land as a building material. Among these, eight are working on a large scale and detailed information is provided below where Adobe or mud brick building technique is an ancient technique dating back at least to 8300 BC (in Jericho). The oldest continually inhabited structures in the world are adobe. Some built in North America around 900 years ago are still in use. Adobe blocks are similar to compressed earth blocks (CEB) and sometimes tagged as the precursor of CEBs. Adobe blocks are usually made of a compacted mixture of clay and straw, however are less uniform in size and shape than CEB’s. Adobe blocks are the simplest and easiest form of earth building forther, Earth use in the construction of housing is one of the oldest and most common methods used by a large proportion of the population of developing countries. It is more material available and cheap and found everywhere. It is easy to work with, and requires less skill and as such, it encourages and facilitates individuals and groups of people are not skilled to participate in building their own housing on the basis of self-reliance. It offers very high resistance to fire, and provides a comfortable living environment built because of the heat and heat insulation of high value. It also offers other important factors all attribute to achieve home planning / design and build a good However, people are re-discovering the benefits of having earth walls in developing countries. Derivatives on the development of traditional techniques to improve the construction and expansion of the land application of methods of quality. Building land is very profitable (and excellent thermal characteristics of low energy input required to produce) efficiency in the use of energy, environment and security, and the qualities that are important, especially with the growing importance of the detection of reducing energy consumption worldwide Although of these very large numbers, and construction land in many parts of the world, especially in developing countries, and is considered to be construction materials for the poor people , and therefore undesirable. Loss of traditional knowledge, which led to a deterioration in the quality of recent construction land, in many cases, exacerbated these beliefs therfoure, Compacted block using soil stabilizer is one of the products that have been introduced into the construction industry as an alternative block system, due to the fact that the amount of soil required for the casting of such blocks is a small quantity which makes it cheaper to produce and easier to install and it is environmentally friendly. And the Technology has been improved in such a way that these soil blocks can be used for almost every building construction project in the market. If you take the implementation of these blocks in Oman there are only few construction companies using them, which raise awareness on how many this study impact the construction industry in the sultanate , as mention previously this can lead to a most cheaper manpower execution of the job as well as reduction on cost of materials for the upcoming projects. On other hand, to find out the possibility of replacing the normal block (cement block) to Compacted block using soil stabilizer and know features on the environment. Ever since Compacted block using soil stabilizer were introduced on the matter has been incredible, some authors compare such blocks (cement blocks, adobe blocks, with a soil block to find if the blocks can be used permanently. Many researchers would try to investigate whether the blocks are resistant enough, durable enough and cost efficient for construction work. The provision of housing is a challenge all over the world, especially in developing countries. Spiraling growth of the population, low Gross National Product and a general lack of purchasing power of the factors that contribute to the gradual deterioration of the housing in developing economies. Impediment to solving the housing problem is the scarcity and / or the high cost of building materials. Ideally, you should produce construction materials for low-cost housing from the available raw materials locally. Moreover, this must be a raw material widely available or that they should be subject to renewal in nature. Building materials more popular as clay bricks and concrete blocks of good quality but are energy intensive in production, and expensive, usually based on heavy industry. Currently, the construction industry accounts for a large portion of total global consumption of material and energy. This consumption has been estimated to be 50% of global material use, and 40% of global energy use where Growth in this consumption is tied directly to global economic growth. Additionally, the current state of the world economy growth is in developing nations, especially in Asia and Africa. Economic growth provides the means to develop and implement cleaner, more efficient technologies. Unfortunately, economic growth in these developing countries is often begin at the expense of the environment, until a point is reached where the accumulated wealth of a nation makes the implementation of more environmentally caring technologies feasible. Since many of the countries driving global economic growth have not yet reached this point, it is clear that there is significant expense of nature for improvement of industrial practices in these countries. Currently, there are extremely wide variety of alternative construction materials and techniques which are used around the world. Soil is one of the natural building materials, which is absolutely different from wood, rock, cement or metal. Mud can be formed for our shelters and it can be reformed or recycling ease back to nature, to be simple soil on earth. Moreover, mud can match with all environments and good for being a passive air-conditioning system. Reusability of mud creates tremendous reduction in environmental impact, energy use and capital expenditure. Mud house from earth or soil is one of the most widely used traditional building materials throughout the world. Currently, one-third of world population stills live in mud house. It can be found mostly in hot-dry and arid area such as some parts of India, Nepal, China, African continent and even in the West Side of North and South American continent and Soil is the oldest material used by man for construction purposes. People have used their native ingenuity to develop forms utilizing soil ranging from the extremely simple to highly complex. They have used the material in response to varying resources, social needs and site conditions .Studies indicate that more and more people are using the land for construction. Generally, people re-discover the benefits of having a dirt-walled houses in the development of the best properties can be obtained through the use of additives to rule the Earth. In addition, construction of the ground is possible with a wide range of construction methods. Should not be based only on imported forms of housing design, but instead on the traditional forms of architecture, as well as, for example, in 1998, 88% of Yemeni families living in rural areas in their own homes and Durability properties of stabilized earth blocks does not look at the implementation of the stabilized soil blocks but looks at advantages and disadvantages of using the stabilized soil blocks giving examples where they have been used, their strength testing and quality control and how to improve on their durability. Soil is the accumulation of sediment or mineral particles produced by physical or chemical disintegration of the rocks, which, in addition to air, water and organic materials, and other materials that can be incorporated into the soil. In addition, the soil is porous heterogeneous materials, dirt, which is affected by changes in the moisture content and density behavior of Engineering It can also be brick blocks by mixing soil with straw fiber and water and let them dry in the sun. You must soils that are suitable for the production of adobe mud is between 15 and 30%. Adobe buildings and walls are thick and have a good thermal mass. Thermal mass material is the ability to absorb heat. On the other hand, the thermal inertia is the rate at which heat moves through the material. High thermal mass materials also exhibit slow rates of thermal inertia. However, Adobe has poor insulation. This means that the unarmed UN buildings built of milk tend to hover around the average daily temperature. Also, houses adobe degrade more quickly when exposed to extreme wet weather. In general, it is dried adobe bricks sun. One of resrch found that the bio-enzymes and their effect on engineering properties of soil. The objective of the paper is the developing countries like India the most important requirement of any project after performance criteria is its economic feasibility and serviceability criteria. The conventional methods are time consuming and are not economically feasible. Hence there is a need to discover the other possible ways to satisfy the performance as well as economical criteria. There has done an experimental investigation and feasibility study on stabilized compressed earth block using local resources. In this study was conducted primarily to determine the mix proportion suitable for blending locally available materials such as soil, sand, clay and gravel mixture, jute, and others, with cement to make a compact block of the earth for the construction of a residential building in an affordable and the results were studied and experimental study on the optimum soil grading for the soil-cement blocks, the paper with an experimental study on the effect of soil properties on the degrees of soil cement blocks and shear bond strength of the soil-cement, triplets building block. Have been examined and the effect of clay content of the soil cement block on the force, and the absorption characteristics of durability, strength and interfacial bond mortar block .also, study on the characteristics of some cement stabilized compressed earth blocks and mortar. Are presented in this paper is to investigate the influence of soil properties and content of the cement on the physical properties of compressed earth blocks and mortar soil the proportions of various types of material in the types of soils which are recommended for the manufacture of compressed earth blocks

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انجلش ,سعودي , اللغه الانجليزي , دروس انجليزي , دروس انجلش , شروحات , جمل انجليزيه , كتب انجليزيه , تعلم اللغه الانجليزيه , تدريس الانجلش , قواعد اللغه الانجليزيه

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