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Eid Mubarak.

Eid Mubarak to all.
May the blessings of ALLAH
Keep your Heart & Home
Happy & Joyous.

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Civil Engineering Basic Knowledge :-

Cement's initial setting time should be 30 min(Minimum) and 90 min(maximum). Final setting time of cement should be=10 hours What type of test should perform for a road's improved subgrade sand filling: 1.FM  of fine aggregates 2.California bearing ratio 3.Dynamic cone penetration test 4.MDD of fine aggregate 5.Field Dry Density. What type of test should perform for earth filling in Embankment with specified soil: 1.Plasticity index. What type of test should perform for Concrete Work: 1.Setting time of cement 2.Compressive strength of cement 3.Gradation of Coarse aggregates. 4.FM  of fine aggregates. 5.Water absorption of coarse aggregates 6.Loss angels abrasion test 7.Concrete cylinder casting & testing What type of test should perform for M.S High strength deform bar 1.Tensile strength,Elongation and unit wt. What type of test should be perform for Brick work: 1.Setting time of cement 2.Compressive strength of cement 3.FM  of fine aggregates 4.Compressive streng...
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Type of Bricks

It is essential to know the type of bricks Bricks for properly understanding the masonry work. Brick can be many types depending on its quality, making process, its raw material and purpose of their using. In this post I'll describe the brick types for various criteria. Depending on quality, bricks are three type - First class brick Second class brick, and Third class brick. First class brick : These bricks are made from good quality raw materials. Color of first class brick is uniform. These are regular in size and shape and doesn't absorb more than 20% water of its own dry weight when immersed in fresh water for 24 hours. The crushing strength of this type of brick should be 105 kg/cm2. Read More: 6 of Good Quality Brick 3 Most Important Properties of Brick Second class brick : The quality of bricks of this type is little bit less from first class brick. Such as it can be slightly over burned. She size and shape can be slightly differ from standard. The crushing str...
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Refractory materials

A  refractory  material is one that retains its strength at high  temperatures .  ASTM  C71 defines refractories as "non-metallic materials having those chemical and physical properties that make them applicable for structures, or as components of systems, that are exposed to environments above 1,000 °F (811 K; 538 °C)". Refractory materials are used in linings for  furnaces ,  kilns ,  incinerators  and  reactors . They are also used to make  crucibles  and moulds for casting glass and metals and for surfacing flame deflector systems for rocket launch structures. Refractory materials Refractory materials must be chemically and physically stable at high temperatures. Depending on the operating environment, they need to be resistant to  thermal shock , be chemically inert , and/or have specific ranges of  thermal conductivity  and of the coefficient of  thermal expansion . The ...
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