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Concrete:

Concrete mixture 


cement (11%)

 fine aggregate (26%)

 coarse aggregate (41%) 

 water (16%) and other(6%).

            kankreet ek samagr maanav nirmit saamagree, nirmaan udyog mein sabase vyaapak roop se upayog kee jaane vaalee nirmaan saamagree hai. isamen baadhyakaaree saamagree jaise choona ya seement, achchhee tarah se vargeekrt maheen aur mote samuchchay, paanee aur mishran (vishesh gunon ke saath kankreet ka utpaadan karane ke lie) ka tarkasangat roop se chuna gaya mishran hota hai. kankreet ke mishran mein, seement aur paanee ek pest ya maitriks banaate hain jo maheen samuchchay kee riktiyon ko bharane ke alaava, maheen aur mote samuchchay kee satah ko kot karata hai aur unhen ek saath baandhata hai. maitriks aamataur par kul maatra ka 22-34% hota hai. set se pahale taaja mishrit kankreet ko geela ya hara kankreet ke roop mein jaana jaata hai jabaki seting aur sakht hone ke baad ise set ya kathor kankreet ke roop mein jaana jaata hai..

Ingredients:

                seement, ret aur mote samuchchay se yukt kankreet ko paanee ke alaava upayukt anupaat mein milaaya jaata hai jise seement kankreet kaha jaata hai. is prakaar ke kankreet mein seement ka upayog baadhyakaaree saamagree ke roop mein, ret ko maheen samuchchay aur bajaree ke roop mein, kuchal pattharon ko mote samuchchay ke roop mein kiya jaata hai.

Concrete manufacturing process:

        ek achchhee gunavatta vaala kankreet anivaary roop se seement, mote aur maheen samuchchay aur paanee ka ek sajaateey mishran hota hai jo seement aur paanee ke beech raasaayanik kriya ke kaaran ek kathor dravyamaan mein samekit hota hai. chaar ghatakon mein se pratyek ka ek vishisht kaary hota hai. mote samuchchay ek bharaav ke roop mein kaary karate hain. maheen samuchchay pest aur mote samuchchay ke beech kee riktiyon ko bharata hai. paanee ke saath seement ek baandhane kee masheen ke roop mein kaary karata hai. mishran kee gatisheelata ko seement pest, phain aur aajakal, mishran ke upayog se tejee se sahaayata milatee hai.

                kathor kankreet ke adhikaansh gun kankreet ke nirmaan ke pratyek charan mein baratee jaane vaalee dekhabhaal par nirbhar karate hain. kankreet kee saamagree ka tarkasangat anupaat mishran dijain ka saar hai. haalaanki, yah gunavatta vaale thos kaary ke uddeshy ko praapt karane kee gaarantee nahin de sakata hai. gunavatta niyantran ka uddeshy baich se baich mein ek samaan shakti ke kankreet ka utpaadan sunishchit karana hai. isake lie thos utpaadan ke vibhinn charanon mein kuchh niyamon ka paalan karane kee aavashyakata hotee hai aur is par nimnaanusaar charcha kee jaatee hai. kankreet utpaadan ke charan hain.


Ready Mixed Concrete (RMC)


           redee miksd kankreet (aaremasee) ek kankreet hai, jise plaastik kee sthiti mein sait par ya kreta ke vaahan mein pahunchaaya jaata hai aur ise us sthiti mein rakhane se pahale kisee aur upachaar kee aavashyakata nahin hotee hai jisamen ise set karana aur sakht karana hai. yah ek kendreekrt svachaalit baiching plaant mein kadaee se niyantrit paristhitiyon mein utpaadit aavashyak gred ka ek uchch gunavatta vaala kankreet hai aur sait par isake plesament ke lie traanjit miksar trak mein graahak ko aapoorti kee jaatee hai. kankreet ko baiching plaant mein ya to sookha mishrit kiya ja sakata hai, aandolanakaaree trak miksar mein lod kiya ja sakata hai aur parivahan ke dauraan paanee milaaya ja sakata hai.pahala aaremasee sanyantr varsh 1992 mein pune mein sthaapit kiya gaya tha. vartamaan mein, aaremasee sanyantr bhaarat ke lagabhag sabhee shaharon mein sthit hain.


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