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ppt about cracks in rcc structures


Posted by:
Created at: Thursday 04th of April 2013 03:50:44 AM
Last Edited Or Replied at :Friday 05th of April 2013 01:52:59 AM
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i want ppt about cracks in rcc structure to present it in coll..................[:=> Show Contents <=:]



CRACKS IN BUILDING


Posted by: seminar class
Created at: Wednesday 23rd of March 2011 12:10:10 AM
Last Edited Or Replied at :Wednesday 23rd of March 2011 03:39:33 AM
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nstances of chemical reactions are following.
• Sulphate attack on cement products
• Carbonation in cement based materials
• Corrosion of reinforcement in concrete
• Alkali aggregate reaction
Certain chemical reaction in building materials result is appreciable change in volume of resulting products and internal stresses are set up which may result in outward thrust and formation of cracks.
Soluble sulphate reacts with tricalcuium aluminates in cement and hydraulic lime and form products which occupy larger volume and ends in developing cracks. An example of cracking of a fl..................[:=> Show Contents <=:]



ppt about cracks in rcc structures


Posted by:
Created at: Thursday 04th of April 2013 03:50:44 AM
Last Edited Or Replied at :Friday 05th of April 2013 01:52:59 AM
cracks in rcc structures, steel structure over rcc structure , crack in rcc ppt, ppt about cracks in rcc structures , seminar on r c c structure, seminar rcc structure ppt , structural cracks in rcc buildings ppt pdf, seminar on cracks in structural ppt , ppt on cracks in rcc,
i want ppt about cracks in rcc str..................[:=> Show Contents <=:]



Protection repair and maintenance of rcc structures


Posted by: smart paper boy
Created at: Monday 18th of July 2011 04:24:19 AM
Last Edited Or Replied at :Monday 18th of July 2011 04:24:19 AM
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a fume is extremely puzzolonic material that reacts with calcium hydroxide
Performance of concrete is good to excellent
Epoxy Coated Reinforcing Bars
Pre-cleaned reinforcing steel bars are protected with a coating of powdered epoxy
Coating blocks chloride ions
Performance is poor to excellent
Post curing heating enclosure installed over an epoxy mortar repair area
A bucket mixer can be used to mix epoxy mortar for small repair areas.
Use of Membranes and Sealers
Membranes and sealers help prevent chloride entry
Urethanes, neoprene, or epoxies are usually used to built up in multipl..................[:=> Show Contents <=:]



CRACKS IN BUILDING


Posted by: seminar class
Created at: Wednesday 23rd of March 2011 12:10:10 AM
Last Edited Or Replied at :Wednesday 23rd of March 2011 03:39:33 AM
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The quantity of water used in the mortar mix can cause shrinkage. Vibrated concrete has less quantity of water and lesser shrinkage than manually compacted concrete.
 Quantity of Cement
As a general rule, the richer the mix is, the greater the shrinkage/drying will be.
 Un-graded Aggregate
Aggregate can cause shrinkage also. If un-graded and fine material/aggregate is used in cement concrete and cement mortar which requires more water and can cause greater shrinkage.
 Curing
After laying cement concrete mix, the hardening of cement takes place, causes reduction in moisture..................[:=> Show Contents <=:]



Prevention of water leakage through construction joints in rcc structures


Posted by: leo_chandu
Created at: Friday 11th of March 2011 01:18:47 AM
Last Edited Or Replied at :Friday 11th of March 2011 01:18:47 AM
prevention of waterleekage, seminar topics on rcc structre , water contact structures, leakage in general structure , construction joint in rcc structure, water leakage prevention ppt , water leakage in rcc structure, prevention of leakages in dams seminar ppt ,
Hi,
I am a final year civil engineering student. I have to be presenting a seminars on preventio..................[:=> Show Contents <=:]



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