• Sand SlideShare

    Apr 23, 2015· Use of sand in construction 1) Bricks work Finest modulus of fine sand. The size of grains must be between 1.2 1.5 mm. it is formed by mixing clay and sand with small quantities of lime magnesia and iron oxide. BUILDING MATERIALS SAND SlideShare,Dec 12, 2013· 5. Pit Sand It serves as an excellent material for mortar or concrete work. Pit sand must be made free from clay and other organic materials before it can be used in mortar. A coating of oxide of iron over the sand grains should be removed. 6. RIVER SAND This sand is widely used for all purposes.

  • sand drain for consolidation settlement SlideShare

    Apr 21, 2015· Sand drains effectively reduce the time taken for consolidation of saturated clay for both stiff and soft clays. 2. This reduction is much more pronounced in case of stiff clays where the time taken reduces by about 6 to 11 times. 3. For both stiff and soft clays, settlement steadily increases with applied load.Ground improvement technique SlideShare,Some disadvantages of sand drains • To receive adequate drainage properties, sand has to be carefully chosen which might seldom be found close to the construction site. • Drains might become discontinuous because of careless installation or horizontal soil displacement during the consolidation process.

  • Study of Prefabricated Vertical Drains SlideShare

    Nov 17, 2018· Disadvantages of Sand Drains: Installation of sand drains by driving down hollow mandrels causes a disturbance of the soil surrounding each drain. This may reduce the flow of water to the drain. During filling, bulking of the sand might appear which could lead to cavities. Construction problems and/or budget problems might arise due to thePresentation on Modern construction materials,Dec 26, 2019· DISADVANTAGES:- • It requires skilled labour for its construction. • It needs special type of materials which can be difficult to find in some areas. • Its quality depend upon the material used and the condition under which it is made. APPLICATIONS:- • It is used in the construction of the jointless bridges.

  • Construction Concrete materials SlideShare

    Nov 16, 2014· Construction Concrete materials. 1. • Concrete is a mixture of aggregate, portland cement, water, and sometimes special admixtures . Its most outstanding qualities are strength, durability, stability, availability, adaptability, and, in most cases, its relatively low cost in terms of construction and lifetime maintenance .Advantages and Disadvantages of Manufactured Sand (M ,Jan 21, 2019· The exploitation of river sand from the river beds by large growing construction activities has resulted in the exploration of a substitute material for river sand i.e. Manufactured Sand or M-Sand. M Sand is an eco-friendly and affordable alternative to river sand. M-Sand is manufactured by crushing rocks, quarry stones into sand-sized particles.

  • Construction Sealants SlideShare

    Mar 12, 2015· Construction Sealants- their history, types, advantages & disadvantages SlideShare uses cookies to improve functionality and performance, and to provide you with relevant advertising. If you continue browsing the site, you Manufactured Sand (M-Sand) in Construction,Oct 23, 2018· DISADVANTAGES OF M-SAND. Crushed sand can be of coarser and angular texture. This can lead to more water and cement requirement to achieve the expected workability. Manufactured sand can contain larger

  • OTTA SEAL.pdf slideshare.net

    For crushed rock, it is preferable that the weighted Flakiness Index does not exceed 30.The weighted Flakiness Index is determined on the following fractions: 9,5 13,2 mm, 6,7 9,5 mm and 4,75 6,7 mm Sand cover seals Material for a sand cover seal used in Otta Seals can be crusher dust, river sand or fine pit sand or a combination of theseWhat is M Sand? 20 Properties, Advantages, Disadvantages,The bulk density of crushed sand is 1.75 gm/cm 3.; The specific gravity of crushed sand is 2.5 to 2.9 and it depends on the parent rock. While using Crushed sand in concrete there is no need to bulkage correction during mix design. The ability to old surface moisture of Crushed sand is up to 10%. It has less adulteration than the river sand It causes less damage to the environment as

  • Green sand moulding Steps,Advantages and Disadvantages

    Green sand moulds are softer than dry sand moulds. This allows greater freedom in construction when the castings solidify and cool. Green sand moulds are quite strong for small depths, as the gases escape from them. Green sand moulds do not require any backing operations or equipment, but dry sand cores are to be used.Types of Sand Used in Construction materialtree,Feb 29, 2016· River Sand. This is generally gathered from the banks of the river. It has a fine quality, unlike pit sand. This sand is usually whitish grey in color and has rounded particles. This sand is very much useful for construction purpose such as plastering and so on. Crushed Stone Sand/ Artificial Sand/ M Sand

  • (PDF) Black sands applications in Construction and Building

    Black sand is considered as source of many ores used in building and construction such as Iron and steel industry, that is beside wide application in Sand Drains: Need and Advantages Soil Engineering,Construction of Sand Drains: Figure 11.30 shows the sand drains installed below an embankment. A sand layer of 50-60 cm thickness is initially laid over the soft soil that not only serves as a drainage layer for the soft soil at top but also provides a working platform for construction of both sand drains as well as embankment.

  • Sand Lime Bricks or Calcium silicate Constructionor.Com

    The comparative strength of sand-lime bricks is about 10N/mm2, so they are suitable for multi-story buildings. For construction in clay soils, these bricks are preferable. Efflorescence doesn’t arise within the case of sand-lime bricks. Bricks, blocks, On-site and Off-site Construction-Pros and Cons The,🕑 Reading time: 1 minute On-site and Off-site construction techniques are widely used in the construction industry based on the objective and features of the construction project. In an on-site construction, the technique makes use of traditional construction methods in which all the works and construction activities are performed sequentially. On the other hand, in

  • Advantages And Disadvantages Of Cement ipl

    In civil engineering industry concrete is the most widely used construction material due to its high stability and structural strength. For the objective of reducing the solid waste disposal problem the concrete industry is constantly looking for supplementary cementitious material such as Quarry sand (QS), Rice husk ash (RHA) and Ground granulated blast furnace slag (GGBS) 4 Key Soil Types: Advantages and Disadvantages Holganix,Aug 27, 2020· Loamy Soil: Advantages and Disadvantages. Considered the most fertile of soil type, loamy soils are a combination of sandy, clay and silt particles. The clay and silt particles improve moisture retention while the sand minimizes compaction and improves drainage. Loamy soils don’t get dried out in the summer, but also don’t get water-logged

  • disadvantages of admixtures in concrete Silica Fume for

    Concrete Advantages and Disadvantages of Concrete Concrete It is made by mixing a binding material (as cement) and various aggregates (inert materials), such as sand, stone chips, brick chips, brick chips, pebbles, gravel, shale, etc with water Building Materials List : Uses Advantages Disadvantages,Jul 24, 2020· Following are the type of the most common building materials, which are a popular choice in any building construction, along with their Advantages and Disadvantages of using it. Stone So in the place of high rainfall region, the stones can be conveniently used as a construction material.

  • Which Sand is best for House Construction? Happho

    River Sand is usually obtained from River Beds and Banks. It is usually very fine in quality and has a white-grey color. River Sand is good for all construction activities like concrete production and plastering as it is well graded. As per the Indian Standard codes, sand used in preparation of concrete and in plastering should ideally confirm to IS-383 Zone-II.disadvantages of sand casting,Disadvantages of investment casting 1. This process is expensive, is usually limited to small casting, and presents some difficulties where cores are involved. 2. Holes cannot be smaller than 1/16 in. (1.6 mm) and should be no deeper than about 1.5 times the diameter.

  • Why we can’t use sea sand in building construction? we

    Oct 11, 2018· Sea sand does not have high compressive strength, high tensile strength, so it cannot be used in construction activities. Sea sand contains salts which deteriorates the plastered surface and the slab surface and in the long run cause seepage in the building. The salt in sea sand tends to absorb moisture from atmosphere, bringing dampness.Green sand moulding Steps,Advantages and Disadvantages,Green sand moulds are softer than dry sand moulds. This allows greater freedom in construction when the castings solidify and cool. Green sand moulds are quite strong for small depths, as the gases escape from them. Green sand moulds do not require any backing operations or equipment, but dry sand cores are to be used.

  • disadvantages of admixtures in concrete Silica Fume for

    Concrete Advantages and Disadvantages of Concrete Concrete It is made by mixing a binding material (as cement) and various aggregates (inert materials), such as sand, stone chips, brick chips, brick chips, pebbles, gravel, shale, etc with water Sand Lime Bricks or Calcium silicate Constructionor.Com,The comparative strength of sand-lime bricks is about 10N/mm2, so they are suitable for multi-story buildings. For construction in clay soils, these bricks are preferable. Efflorescence doesn’t arise within the case of sand-lime bricks. Bricks, blocks,

  • Subgrade: Properites, Advantages & Disadvantages

    Disadvantages of subgrade: Soil containing high moisture is not compacted properly. Sometimes they are highly economical. Also read: WBM Road, Soil Classification & Road Drainage Conclusion: The main function of the subgrade is to provide adequate support to the all types of pavement or structure.The advantages and disadvantages of FEUture,The threatening disadvantage is pollution as if this technology is adopted worldwide, then there is a risk of an increase in the production of plastic”. Since the research in eco-bricks is not yet done they cannot fully tell if eco-bricks can provide the strength that the metal and stone can in terms of carrying a lot of loads.

  • Types of Bricks used in Construction Advantages

    Jan 30, 2020· Disadvantages of Bricks in Construction Project Process. The following are some disadvantages of using bricks in the Construction Project. 1. If we pay attention to the strength and durability, brick proves to be back here as compare to stone masonry. 2. Brick masonry needs plastering and colour washing, which increases the cost. 3.Discuss the advantages and disadvantages of using,The Advantages and Disadvantages of using equipment's and machineries at construction site are as follows: Advantages: They help increasing the rate of output through work progress with the best effective and efficient methods. Reduce the overall construction costs especially for large contracts.

  • Disadvantages of Concrete as Construction Material

    Feb 13, 2017· Disadvantages of Concrete & Limitations. Disadvantages of Concrete are as follows: Concrete has a very low tensile strength and requires the use of reinforcing bars in concrete tensile zone.; Expensive formwork is required for casting and molding and to hold the concrete in place until it hardens sufficiently.; The low strength per unit of weight of concrete Advantages and disadvantages of Reinforced cement concrete,Sep 12, 2017· The raw materials which are required for R.C.C. i.e., cement, sand aggregate, water and steel are easily available and can be transported easily. Nowadays Ready Mix Concrete (RMC) is used for faster and better construction. (RMC is the concrete which is manufactured in the factory and transported to the site in green or plastic state).

  • What are the advantages and disadvantages of glass windows

    Disadvantages: Mining of glass sand results in particulate emissions, soil erosion, pollutant runoff. Air pollution associated with energy consumption for mining, processing, and transporting materials. Glass manufacturing release air pollutants that contribute to Advantages and Disadvantages of Concrete Civil Engineering,Concrete is considered as a chemically combined mass where the inert material acts as a filler and the binding materials act as a binder. The most important binding materials are cement and lime. Inert materials used in concrete are termed as aggregates.Most common aggregates are sand, brick chips, stone chips, gravel, shells, etc.The concrete plays a very important role in

  • Advantages And Disadvantages Of Construction Management

    Jan 01, 2015· Disadvantages of Construction Management. While Construction Management may be beneficial in some circumstances, owners should recognize that it may also have some disadvantages. The most significant disadvantage of many Construction Management contracting arrangements is that significant portions of the total services for which the,