चूना पत्थर
Revision as of 11:24, 10 March 2015 by रविन्द्र प्रसाद (talk | contribs)
choona patthar (aangrezi: Limestone) ek prakar ki avasadi chattan hai, jo mukhy roop se kailshiyam karbonet ke vibhinn kristaliy roopoan, jaise- khanij kelsait ya eregonait se milakar bani hoti hai. choona patthar vastut: kailshiyam karbonet hai, par isamean silika, ailyoomina aur lohe ityadi sadrish apadravy aantarmishrit rahate haian.
- gharoan adi ke nirman ke liye choona patthar kafi behatar rahata hai aur bharat ke vibhinn bhagoan ki starit chattanoan se suvidhapoorvak yah utkhanit hota hai.
- choona patthar anek qismoan mean upalabdh hai. yah rang, vinyas, kathorata aur tikaoopan mean vibhinn gunoan ka hota hai.
- saghan kan vale gahan or manibhiy patthar grih nirman ke liye utkrisht hote haian. ye karyasadhak, dridh aur tikaoo hote haian.
- choona patthar par tanu aml ki kriya b di saralata se hoti hai, at: audyogik nagaroan ke nikat grih nirman ke liye yah patthar thik nahian hota.
- banavat aur any gunoan ki vibhinnata ke karan choona patthar ki dridhata vibhinn hoti hai. isaliye grih nirman ke poorv patthar ki pariksha kar leni chahie.
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