Geotestlab

25 Things Most People Don't Know About Ready-mix Batching Plant Daily Check List
All the Questions should answer with Yes or No or Explanation

Check Dune Sand Clean/Lot of Deleterious/Rubbish materials seen Have we segregated such material away from stock bins (in the enclosed containe

01 Check aggregate for size and shape (Visual only)
40mm yes/ no
20mm yes/No
10mm Yes/No

02 Check NWS. (Test Result)
5mm yes/no
Dune sand yes/ no

3 Check Dune Sand Clean/Lot of Deleterious/Rubbish materials seen Have we segregated such material away from stock bins (in the enclosed container)
Yes/no

04 Is Coarse aggregate storage bins properly cleaned of dus in the last 24 Hr ?
Yes/ no

05 Is there any cross contamination of raw materials any where? (in storage bins/hoppers)
Yes or no

Are the gratings /screens of plant bins in good condition to avoid entry of over size material entering in?
Yes/ no

06 Any other comments related to aggregates:
Explain

07 Are all the admixtures drums stored in proper place (protected from sun and dust)? (Ensure that the barrels are properly covered wirth lid)
Yes/ no

08

a) Are all the bags of microsilica stored properly? (the bags should not be kept open and exposed directly to sun, should be protected by coverting with tarpaulin sheets) yes or no

b) Is there any wastage of microsilica taking place? (Near Sila / Storage location)
Yes or no

c) Are spillages of microsilica cleaned?
Yes or no

09 Did you find any raw material being at very low stock? Not received yet for new supply to be started?
Yes or no

10 Any complaint frm batchers about any batching errors?
Yes or no

11 Have they cleaned the mixer in last 24 Hrs?
Yes or no

12 Any unusual complaints on production reported by batching plant operator or technician?
Yes or no

13 Are they using the right moisture content & absorption values provided by the laboratory for batching?
Yes or no

14 Did you verify the batching details w.r.t cement type, content, mixing time & temp for the daily concrete schedule?
Yes or no

15 What is the smallest batch cycle they have run in last 24 Hrs?
Explain

M3 errors within the tolerance limits?
Explain

16

a) is there any new batcher who started to do the batching?
Yes or no

b) is there any new shovel operator who started to load the raw material?
Yes or no

c) Is there any new cement bulker off loader started to do work?
Yes or no

17 Is there any complaint from the plant technician/ operator about leakage of truck mixer water valve? Have we informed the plant co-ordinator about the complaint?
Yes or no

18 Are there any problems in supply of concrete at the specified temperature? (Like have we faced any problem of with ice plant in last 24 Hrs? Due to which we are not able to supply concrete at specified temperature?)
Yes or no Explain

Any batching aborted at the plant? Reasons? What was done with the aborted concrete? Furnish details
Yes or no Explain

19 Are there any problems in meeting the specified workability at sie?
Yes or no

20 Arjmme we supplying concrete of low workability/high workability (compared to specified slump)? Is there any mix in which we are finding problems (abnormal) in production? (Like not getting required / over slump for given dosage of admix and moisture) Which site and grade of concrete?
Yes or no

21 Are there any complaints about the quality of concrete mix? (Like mix is Harsh/Sandy/High bleeding/More slump loss/ Delayed in setting/Short measure/Ony few trucks had harsh mix) Please furnish the details here below.
Yes or no Explain
22

a) Is plant technician taking all the samples as per required sampling plan?
Yes or no

b) Are the equipments used by the technicians in proper condition/calibrated?(Like Cube moulds are properly Cleaned & Oiled. Concrete dial thermometer / measurement tapes affixed with the calibration certificates)
Yes or no

c) What is the time of demoulding batching plant cubes and shifting to lab?
Explain

d) Any technician, who is new to concrete sampling at batching plant started to work? (Discuss with him and observe his work frequently).
Yes or no

e) Have we deviated with planned sampling Vs actual sampling in last 24 Hrs? If so What is the reason & what corrective action implemented?
Yes or no

23 Any rejected/returned/diverted (regraded) concrete in last 24 Hrs? If so furnish the details below.
Yes or no

24 Is the variation in any 3 days/7 days / 28 days cube alarming for any given concrete? Furnish the details
Yes or no Explain

25 Any untoward incident of safety which happened in production in last 24 Hrs?
Yes or no