The Civil Blog

Aggregate is the component of a composite material that resists compressive stress and provides bulk to the composite material. For efficient filling, aggregate should be much smaller than the finished item, but have a wide variety of sizes. For example, the particles of stone used to make concrete typically include both sand and gravel . Comparison to fiber composites Aggregate composites tend to be much easier to fabricate, and much more predictable in their finished properties, than fiber composites . This is because fiber orientation and continuity can have an overwhelming effect, but can be difficult to control and assess. Fabrication aside, aggregate materials themselves also tend to be less expensive; the most common aggregates (mentioned above) are found in nature and can often be used with only minimal processing. Not all composite materials include aggregate in their design. This is because aggregate particles tend to have about the same dimensions in

Cement mortar Mortar is a workable paste used to bind construction blocks together and fill the gaps between them. The blocks may be stone , brick , cinder blocks , etc. Mortar becomes hard when it sets, resulting in a rigid aggregate structure. Modern mortars are typically made from a mixture of sand , a binder such as cement or lime , and water. Mortar can also be used to fix, or point , masonry when the original mortar has washed away Portland cement mortar Portland cement mortar (often known simply as cement mortar) is created by mixing Ordinary Portland cement (OPC) with sand and water. It was invented in 1794 by Joseph Aspdin and patented on 18 December 1824, largely as a result of various scientific efforts to develop stronger mortars than existed at the time. It was popularized during the late nineteenth century, and owing to the First World War, by 1930 it had superseded lime mortar for new construction. The main reasons for this were that Portland cement sets ha

Question 1. Tell me about yourself. This is the first question you could be asked in any interview. This may sound simple but if you are unprepared you could be in big problem. So just prepare yourself for this simple yet difficult question Start with one two lines about yourself, who you are ? a brief 1 line about your family [ this depends on what kind of interview you are going through] and lastly why are you the best suited person for this job. Tell about your achievements but never sound too proud of your achievements, highlight yourself but with decency. Remember the golden rule “First Impression is the last impression.” Question 2: What are your greatest strengths? This question is to judge how you present yourself, are you the person who talks too much, are you arrogant or are you the one who just do what others say and thus never realized your strengths. The answer to this question should be linked with facts and figures if possible. If you had any previous achiev