Design procedure of PQC:- Use M40 grade concrete. 1:- The minimum cement content 360kg percum. If flyash more than 20% the minimum cement contents 310 kg percum. 2:-The flexuar strength of cement concete after 28day curing 4.5MPA compressive strength. 3:- The compressive of cement concete after 28day curing compressive strength 40MPA. 4:- Dowel bar provided expension joint vehicle load transfer one.slab.to another slab. Dowel bar size 32mm dia plane 9bar S240.length 500mm PVC DOWEL SHEET SIZE 34MM ×100 micron 330mm length of dowel bar full length of greasing and insert pvc dowel sheet cap and 170mm length of dowel bar epoxy coated protection of corrosion. Expension joint 25 mm water and dirt enter efected dowel bar corrosion due to corrosion unexpected stressed on the joint and resulting the restrained movement. 5:- Tie bar provided longitudinal directions of mid depth of slab .To prevent transverse cracking and differentional deflection. Tie bar size 12mmdia tor bar length 1m. Tie bar full length of epoxy coating protection for corrosion. 6:- PQC mix pre mix batching plant materials homogeneous and uniform.. PQC carrying by hiwa premix batching plant to site, premix batching plant not more than 10km unless workability cement concete reduce and self weight of cement concete Compacted, cement slurry stiff and Sprinkler water drop down on pqc . 7:- workabilitey of cement concete 25mm+/_ 10mm 8: Temperature fPQC of pqc not mre than 25deggre celceious. 9:- TOLERANCE of pqc +/_6mm 10:- water cement ratio .45 to .50 11:- Before separation memberance laying on DLC surface extremely swept clean of all extereneious dirt wash out by air pressure. Sprinkler water drop down on DLC surface to maintain the pqc Temperature. 12 separation memberanc 125 micron and300mm overlapped. Separation memberanc laying on gunney beg and old conver belt to protection of separation memberanc. Hiwa and jcb, excavator moving separation memberanc no damage. 13:- pqc drop down hiwa separation memberanc without damaged and jcb bucket spreading PQC on separation memberanc. 14:- Automatic electromagnetic electronic sensior paver machine 300mm PQC slab casting and 23no females and male dowel bar drop in the mid depth of slab . Paver mahine speed 1.2 m/ minutes ,prpoperly compacted pqc surface, proper camber no segregation and bleeding , honeycomb no loss cement concete loss. 15;- The relative humidity is less than 25% The wind velocty is not more than 12km/ hr. Moving roof truss on surface area moving to avoid shrinkage. 16:- Texturing machine textue traverse directions 3 to 4mm depth and 3mm wide within final setting of cement 4 to8 hr compressive strength 2MPA TO 7MPA. tolerance of texture +/_ 1mm 16 :- sawing operating start expension joint 25mm 1/3 rd dept of slab within 4 to 8 hr and compressive strength 2MPA to 7.5 MPA Within 24 hr bitumen filling expension joint. After 21day to 28 day polysulphide sealnt filling. Longitudinal directions 100mm depth bituminous paint. application. Both sides .protection of connectivity of slab. 17:- PQC surface hessian cloth and gunny beg on surfaces area Sprinkler water drop down on surfaces area 28day days curing. Allowed traffic movement on side.
AnswerBot
1y
Design procedure for PQC using M40 grade concrete
Minimum cement content of 360kg per cum
Flexural strength of 4.5MPA and compressive strength of 40MPA after 28-day curing
Dowel bars and tie bars provide...read more
atul kumar vyas
6mo
Design procedure for PQC using M40 grade concreteMinimum cement content of 360kg per cumFlexural strength of 4.5MPA and compressive strength of 40MPA after 28-day curingDowel bars and tie bars provid
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