When the admixtures are compatible with the concrete, they should meet the following quality requirement: Characteristics of admixture: The data sheet should give away essential characteristic details like the kind of admixtures, on hand forms, the basic elements utilized, particulars on dosage and its utilization techniques, safety measures to be undertaken and its adherence with […]
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If concrete is impervious, or in other words, its permeability is not high then acidic agents and corrosive agents cannot infiltrate and attack it. Concrete usually has two varieties of pores, which establish extend of permeability. These are known as capillary pores (with a width ranging between 0.01 to 10 micron) in the cement, paste […]
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The utilization of LWC (Lightweight concrete) has been a component in the construction business for quite a long time, yet like other material the expectancy of potency of the execution have raised and now we are expecting a steady, dependable material and unsurprising attributes. Structural lightweight concrete has a set up thickness or denisty (unit […]
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Every one of the blocks to be utilized in the construction process are thoroughly soaked in water so they don’t assimilate water from the mortar. Mortar is spread on the highest point of the foundation course over a zone to be secured by the edges of the wall. The sides of the wall is built […]
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Objective: To assess the workability of concrete (using compaction factor test) Apparatus Compaction factor apparatus’ trowels Hand scoop (15.2 cm long) Steel rod or other handy equipment (1.6 cm diameter, 61 cm long rounded at one end) and a balance. Sampling Concrete mix (M15) is blended according to the specified mix design in the laboratory. […]
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A Fiber Reinforced Polymer (FRP) composite is characterized as a polymer that is strengthened with a fiber. The important role of fiber fortification is to communicate stack along the length of the fiber and to give quality and firmness in a single direction. Fiber Reinforced Polymer (FRP) speaks to a class of materials that falls […]
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The utilization of Near Surface mounted Reinforcement for solid and concrete structures are not another development. A kind of NSMR has been utilized since the 1940s, where steel reinforcement is set in spaces in the solid cover or also solid cover that is moulded onto the structure. Here steel bars are put in spaces in […]
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Circular Prestressing is basically utilized to indicate the prestressing of cicular structures, for example, pipes and tanks where the prestressing wires are twisted in circles. As opposed to this term, “linear prestressing” is utilized to integrate every single other kind of prestressing, where the cables can either be linear or bended, however not twisted in […]
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The determination of specific gravity is usually described as the ratio between the mass of a specified volume of substance and weight of an equivalent volume of water. To resolve the specific gravity of cement, kerosene which do not react when mixed with cement is utilized. Apparatus Le Chaterlier”s flask, weighing balance, kerosene (free from […]
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Types of Portland cement Many kinds of Portland cement are produced to meet the needs for various purposes American Society for Testing and Materials (ASTM) designation C150 has specified the 8 types of Portland cement. Type Name Type I Normal Type IA Normal, air entraining Type II Moderate sulfate resistance Type IIA Moderate sulfate resistance, […]
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