As per Technical Code Explanation ACI 318-11 5.6 - Evaluation and acceptance of concrete 5.6.3.3 - Strength level of an individual class of concrete shall be considered satisfactory if both of the following requirements are met: (a) Every arithmetic average of any three consecutive strength tests (see 5.6.2.4) equals or exceeds fc ′ ; (b) No strength test (see 5.6.2.4) falls below fc′ by more than 500 psi when fc′ is 5000 psi or less; or by more than 0.10fc′ when fc′ is more than 5000 psi. 5.6.3.4 - If either of the requirements of 5.6.3.3 is not met, steps shall be taken to increase the average of subsequent strength test results. Requirements of 5.6.5 shall be observed if requirement of 5.6.3.3(b) is not met. 5.6.5 - Investigation of low-strength test results 5.6.5.1 - If any strength test (see 5.6.2.4) of laboratory-cured cylinders falls below fc′ by more than the values given in 5.6.3.3(b) or if tests of field-cured cylinders indicate deficiencies in protection and curing (see 5.6.4.4), steps shall be taken to ensure that load[1]carrying capacity of the structure is not jeopardized. 5.6.5.2 - If the likelihood of low-strength concrete is confirmed and calculations indicate that load-carrying capacity is significantly reduced, tests of cores drilled from the area in question in accordance with ASTM C42 shall be permitted. In such cases, three cores shall be taken for each strength test that falls below the values given in 5.6.3.3(b). 5.6.5.3 - Cores shall be obtained, moisture condi[1]tioned by storage in watertight bags or containers, transported to the laboratory, and tested in accor[1]dance with ASTM C42. Cores shall be tested no earlier than 48 hours and not later than 7 days after coring unless approved by the licensed design profes[1]sional. The specifier of tests referenced in ASTM C42 shall be the licensed design professional. 5.6.5.4 - Concrete in an area represented by core tests shall be considered structurally adequate if the average of three cores is equal to at least 85 percent of fc′ and if no single core is less than 75 percent of fc′. Additional testing of cores extracted from locations represented by erratic core strength results shall be permitted. 5.6.5.5 - If criteria of 5.6.5.4 are not met and if the structural adequacy remains in doubt, the responsible authority shall be permitted to order a strength evaluation in accordance with Chapter 20 for the questionable portion of the structure or take other appropriate action. GUIDE TO EVALUATION OF STRENGTH TEST RESULTS OF CONCRETE (ACI 214R-11) 5.3.1 Criterion No. 1-The engineer may specify a maximum percentage of individual, random strength test results permitted to fall below the fc ′. This is the form of many international specifications, which tend to use a reliability factor of 1.65, implying acceptance of only a 5% failure rate. This criterion is no longer used in ACI 318, but may occur in situations where the average strength is a fundamental part of the design methodology, such as in some pavement specifica[1]tions. A typical requirement permits no more than 10% strength tests to fall below fc ′. Specified strength in these situ[1]ations generally ranges from 3000 to 5000 psi (21 to 35 MPa) 5.3.2 Criterion No. 2-The engineer can specify a probability that an average of n consecutive strength tests will fall below fc ′. For example, ACI 318, Section 5.6.3.3, stipulates that the average of any three consecutive strength test results should equal or exceed fc ′. The fcr′ should be established where failure to meet fc ′ is anticipated at no more than 1 in 100 times (0.01). 5.3.3 Criteria No. 3 and 4-The engineer may specify a certain probability that a random individual strength test result will be no more than a certain amount below fc ′. For example, Criterion No. 3 is used in ACI 318 by stipulating that no individual strength test result falls below fc ′ by more than 500 psi (3.5 MPa). An alternative Criterion No. 4 is appropriate for concrete with fc ′ > 5000 psi (35 MPa), requires that no individual strength test result falls below 90% of fc ′ . These two criteria are equivalent at 5000 psi (35 MPa). The minimum value of fcr′ is established so that nonconformance of an individual, random test is anticipated no more often than 1 in 100 times in either case. ASTM C 94-06, Chapter 18 - Strength 18.4.1 The average of any three consecutive strength tests shall be equal to, or greater than, the specified strength, f ‘c, and 18.4.2 When the specified strength is 5000 psi [35 MPa] or less, no individual strength test (average of two cylinder tests) shall be more than 500 psi [3.5 MPa] below the specified strength, f ‘c. NOTE 19-Due to variations in materials, operations, and testing, the average strength necessary to meet these requirements will be substantially higher than the specified strength. The amount higher depends upon the standard deviation of the test results and the accuracy with which that value can be estimated from prior data as explained in ACI 318 and ACI 301. Pertinent data are given in Appendix X1. 18.4.3 When the specified strength is greater than 5000 psi [35 MPa], no individual strength test (average of two cylinder tests) shall be less than 0.90 f ‘c. Designing Concrete Structures: Acceptance of Concrete Compressive Strength Test Results According to ACI 318M-19 ACI 318M, 26.12.3.1(b) Note: Test 9 has one cylinder test result below 24 MPa (22.1 MPa). The average of the two cylinders tested is 23.4 MPa (the strength test result), which is above 20.5 MPa, so the concrete is acceptable. Test 11 has a cylinder test result of 20.5 MPa. The strength test result is 23.0 MPa, so the concrete is acceptable. ACI 318M, R26.12.3.1(b) Steps to be taken because the arithmetic averages were low (arithmetic average of Tests 13, 14, and 15) and because the strength in the Test 14 strength test result was below fc′ by more than 3.5 MPa. 1. Increase Average of Strength Test Results Steps to be taken will be dependent on circumstances and could include one or more of the following: · Increase in cementitious materials content · Reduction in, or better control of, water content · Use of a water‐reducing admixture to improve the dispersion of cementitious materials · Other changes in mixture proportions · Reduction in delivery time · Closer control of air content · Improvement in the quality of testing, including strict compliance with ASTM C172, ASTM C31, and ASTM C39. Note: Changes in operating procedures or small changes in cementitious materials content or water content should not require a formal resubmission of mixture proportions; however, changes in sources of cement, aggregates, or admixtures need to be accompanied by evidence that the average strength level will be improved. DPWH BLUE BOOK -Series of 2016 3.20 Acceptance of Concrete No acceptance and final payment shall be made for the completed concrete pavement unless core test for thickness determination is conducted, except for Barangay Roads where the Implementing Office is allowed to waive such test, and for National Primary Roads where the concrete pavement shall also meet the International Road Roughness (IR!) criteria at the time of completion. The concrete pavement shall only be considered accepted if it meets the specified IRI value at the time of completion. The strength level of the concrete will be considered satisfactory if the averages of all sets of three (3) consecutive strength test results equal or exceed the specified strength, fe' and no individual strength test result is deficient by more than 15% of the specified strength, fe'.A set shall consist of a minimum of three (3) concrete beam specimens. Concrete deemed to be not acceptable using the above criteria may be rejected unless the Contractor can provide evidence, by means of core tests, that the quality of concrete represented by failed test results is acceptable in place. At least three (3) representative cores shall be taken from each member or area of concrete in place that is considered deficient. The location of cores shall be determined by the Engineer so that there will be at least impairment of strength of the structure. The obtaining and testing of drilled cores shall be in accordance with MSHTO T 24, Standard Method of Test for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete. Concrete in the area represented by the cores will be considered adequate if the average strength of the cores is equal to at least 85% of, and if no single core is less than 75% of, the specified strength, f’c. If the strength of control specimens does not meet the requirements of this Subsection, and it is not feasible or not advisable to obtain cores from the structure due to structural considerations, payment of the concrete will be made at an adjusted price due to strength deficiency of concrete specimens as specified hereunder:
@prakashkhandekarretiredeng2440Ай бұрын
Wonderful vdo 😅😅
@ilsenconcrete59722 күн бұрын
Thank you so much 😀
@mishaalkudih6957Ай бұрын
Sir pwde ba makahinge ng format mo sa design mix?
@ilsenconcrete597Ай бұрын
Email
@Site-CoordinatorАй бұрын
good morning engr. pwede po mahingi yung spreadsheet niyo po.
@ilsenconcrete597Ай бұрын
Email
@sarcampoon7052 ай бұрын
Sir, could I please ask for a copy of the spreadsheet? It's solely for school-related use. Thank you!
@ilsenconcrete5972 ай бұрын
Email
@Fuurioworld2 ай бұрын
Good job lods😊..keep it up
@sidracho98983 ай бұрын
Hello sir pwd po hingi ng file po..
@ilsenconcrete5973 ай бұрын
Email
@sidracho98983 ай бұрын
Thank you sir.
@ilsenconcrete5973 ай бұрын
@@sidracho9898 send in my messenger your email
@sidracho98983 ай бұрын
Sent na po sir.
@naeemakram43463 ай бұрын
Make videos at every ASTM of ACI
@ilsenconcrete5973 ай бұрын
Noted that!
@naeemakram43463 ай бұрын
Plzz prepared ACI
@jp30world3 ай бұрын
nice good concrete..
@mugiwarasensei25583 ай бұрын
Sir yung job mix po na 1:2:4 may trial mix po layo at test sample?
@ilsenconcrete5973 ай бұрын
Hnd ko na sundun ng panibagong study, sure n yung 1:2:4 n mas mababa ang results
@mugiwarasensei25583 ай бұрын
@@ilsenconcrete597 pero sir...totoong aabot ng 3000 psi in 28 days ang 1:2:4
@ilsenconcrete5973 ай бұрын
@mugiwarasensei2558 yes check mo yung isang video.
@mugiwarasensei25583 ай бұрын
@@ilsenconcrete597 laing video po
@mugiwarasensei25583 ай бұрын
Hi po... may test po kayo about 1:2:4 proportion?
@kenn69934 ай бұрын
Gem marami pong salamat
@arnoldclintfernandez20505 ай бұрын
Sir Can I have the excel format?
@ilsenconcrete5975 ай бұрын
Send your email
@ilsenconcrete5975 ай бұрын
Add me at Facebook ilsen Nollido daet
@user-kj2ig2fs1l5 ай бұрын
Sir, pwedi pong huningi ng copy ng spreadsheet? for school purposes lng po. thank you!
@ilsenconcrete5975 ай бұрын
Send your email.
@efraimobmerga46448 ай бұрын
Good Morning. Sir meron kana po ba nung table na kasama yung GGBS. Pwede po makahingi ng format. CE Student po ako. Thanks
@ilsenconcrete5978 ай бұрын
Email
@efraimobmerga46448 ай бұрын
Thanks in advance po
@wak-wak9 ай бұрын
Nkakamiss dyaan. Dati dyan kami kukumuha ng aggregates from mauban batching plant. Naalala kk dyan 2 days kami nag antay. One day orientation ang lawak sa loob nkakamiss
@reynaldozartiga68709 ай бұрын
Thank you Sir sa knowledge. Can I have a copy of your excel spreadsheet?
@ilsenconcrete5979 ай бұрын
Send your email
@ilsenconcrete5975 ай бұрын
Add me at Facebook ilsen Nollido daet
@user-uc9vm5nz5g3 ай бұрын
@@ilsenconcrete597 can I have too sir? Thank Youuuuuuuu hihi
@ilsenconcrete5973 ай бұрын
Send your email
@jamesempleo96609 ай бұрын
sir yung design mix ng 4000 psi in 7days...thnx
@ilsenconcrete5979 ай бұрын
May professional fee n yan, hnd pwd eh share yung mga ganun. Pasensya na!
@katipunero11310 ай бұрын
Boss kaya ma achieve ang 3000psi kung 1inch lang 20x20mm na concrete tapos 1:1 sand cement mixture?
@ilsenconcrete59710 ай бұрын
Mortar cubes ba ang gusto mo eh tanong?
@katipunero11310 ай бұрын
@@ilsenconcrete597 yes po
@katipunero11310 ай бұрын
@@ilsenconcrete597 waffle tiles po
@ilsenconcrete59710 ай бұрын
Check mo sa ASTM about mortar cubes, nandyaan n lahat kasama mga weight ng materials. 28Mpa required strengths ng Cement sa 28 days.
@katropa192310 ай бұрын
Nice one idol thqnks for sharing from ra😊
@oelusidleodisu89410 ай бұрын
galing nmn niyan idol from ra garcia
@adolfoescobar393510 ай бұрын
Done connected to you dear friend
@shortgrowinchannel10110 ай бұрын
Ang sipag team RA
@10snkrs10 ай бұрын
ayos idol and ngat palagi sa trabaho safety first😊 support from RA
@ailenedexplorer16510 ай бұрын
Sending full support #ra
@emmyvlogs0610 ай бұрын
Hello HOST SHOUTOUT GOOD VIDEO BIG LIKES. FROM RA 😊
@barbievlogz304410 ай бұрын
Sipag naman....Ra Garcia
@miniewongvlogs10 ай бұрын
Hello new friend here All the way from @RA... SALAMAT PO
@keskrisconnect127410 ай бұрын
Ganyan pla magsemento sir ty for sharing.
@edilynajuranze302610 ай бұрын
Wow galing mas pinadali ung trabhu host peru ingat po kau..drink lots of water kasi prang maamoy ung cement po.god bless and more power from ka Artista
@abbyintaiwan10 ай бұрын
Sipag naman lods ingat po
@kesodebola200310 ай бұрын
Sir pwede b mkahingi ng copy mg c94 n gamit mo?
@ilsenconcrete59710 ай бұрын
Free ang download ng C94, pwd sa scribe.
@kesodebola200310 ай бұрын
Ilang years validity ng certificate?
@ilsenconcrete59710 ай бұрын
5 years
@kesodebola200310 ай бұрын
@@ilsenconcrete597 how to renew it after 5 years?
@ilsenconcrete59710 ай бұрын
@@kesodebola2003 You need to take exam again.
@kesodebola200310 ай бұрын
@@ilsenconcrete597 OHH I see thank you
@kesodebola200310 ай бұрын
Hi sir ano gamit nyong admix?
@ilsenconcrete59710 ай бұрын
MBT
@titoaticaldo1948 Жыл бұрын
Anong meaning Ng pcd sir
@ilsenconcrete597 Жыл бұрын
Pumpcrete design.
@felixshaunbalbona9186 Жыл бұрын
good pm sir pwede makahingi excel file po. salamat
@ilsenconcrete597 Жыл бұрын
To all followers already received the format, apologize to the format i send, only now i notice that the format i send is different than video i post. Thanks
@ilsenconcrete5975 ай бұрын
Send your email
@manolocastro2899 Жыл бұрын
Sir Ask ko lang kung yang Table from ACI 211.1 for Concrete Design Mix is applicable for Structural Concrete (Compressive) only? How about for Concrete Pavement (Flexural) Item 311?
@ilsenconcrete597 Жыл бұрын
Yes applicable nmn yan, pero we always depend sa project specifications or requirements. Sa pavement ACI 211.1 naman gamit beron din naman combination ng ACI at DIN Standard galing AASHTO T-27
@ilsenconcrete597 Жыл бұрын
For flexural 550F equivalent to 3,500 Psi, 525F equivalent to 3,000 Psi
@manolocastro2899 Жыл бұрын
gamit ko ksi yung Table V pra sa Pavement (DPWH Item 311), applicable prin rin ba ito sir?
@ilsenconcrete597 Жыл бұрын
@@manolocastro2899 iba gamit ko n format but same method parin naman. Strength prn naman dapat ma comply.
@nestorportuguez8964 Жыл бұрын
parang hindi relliable yong mga precast. Hindi kaya babagsak yan, pagka dinadaanan na ng tren? di man lamang pinakikita kung papano naiipit yang precast..
@ilsenconcrete597 Жыл бұрын
You mean sir yung post tensioning?
@rockrhyme6524 Жыл бұрын
Huwag kang mag-alala, Japan may hawak sa project na yan kaya huwag kang umasta na parang mas marunong ka pa sa kanila!
@dinomonzon1529 Жыл бұрын
No location
@ilsenconcrete597 Жыл бұрын
Malolos to Clark Pampanga project
@dinomonzon1529 Жыл бұрын
@@ilsenconcrete597 Alam Ko lol araw araw ako nanood sa madaming blogger 4 years Mahaba ang malolos to Clark, wala u specific if ano sector
@dinomonzon1529 Жыл бұрын
Tidnan mo to kzfaq.info/get/bejne/pJdlorKi3J-nZ2g.html
@ilsenconcrete597 Жыл бұрын
@@dinomonzon1529 pier 312 to 313, package 1, malolos to Minalin Pampanga
@jetgo1010 Жыл бұрын
Dapat ilagay mo kung saan specific na location yang Bina vlog mo .mahaba yang malolos to minalin pampanga
@ladyvanister Жыл бұрын
Great job
@anniepaitanmarcellana Жыл бұрын
Done watching you bro,keep on sharing
@Quagmire290 Жыл бұрын
Thanks for sharing your knowledge. Sir pwede magpatutor at humingi ng copy..
@TheBiancanhicole Жыл бұрын
Saan po mismo yan? maraming islands ang BVI di ba...
@pinoyilseninfo9426 Жыл бұрын
Tortola
@TheBiancanhicole Жыл бұрын
Ang sarap nman mag apply jan...pano kaya at magkano ang gastos entire process?
@pinoyilseninfo9426 Жыл бұрын
@@TheBiancanhicole once direct hire ka, wala masyadong gastos
@TheBiancanhicole Жыл бұрын
@@pinoyilseninfo9426 baka nman matulungan ako mag apply🙏🙏🙏🙏🙏🙏
@alphanikolailaudencia4823 Жыл бұрын
Hi Guys😁
@chy5529 Жыл бұрын
Hi sir! nag pm po ako sainyo sa fb about this, sana po mahelp nyo ako😊😊 salamat po
@BrianMalibiran Жыл бұрын
sir tanung ko lang po yung normal consistency of cement
@pinoyilseninfo9426 Жыл бұрын
PM mo ako sa messenger
@johnvincenttorres9195 Жыл бұрын
Hello Sir, pwede ko po ba mahingi yung file na yan pag basehan ko lang po sa ginagawa naming mix design. Thank you po