[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-663769-105":59,"doc-detail-663769-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","instructions-for-completing-concrete-mix-design-forms-form-312u","Instructions for Completing Concrete Mix Design Forms - Form 312U","","Instructions explain the contractor/concrete producer’s process for submitting a concrete mix design to the North Carolina Department of Transportation, Structural Materials Laboratory, using Materials and Test Form 312U. The document details how to complete required fields, including the Producer’s Mix ID, class, vibration and air status, concrete strength at 7 and 28 days, reference mix design handling when identical, material proportions with English Units, admixture branding, and mix properties such as slump, mortar content, air content, maximum water, and calculated water-cement ratio. Final tables require aggregate and cementitious data selection or entry.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/instructions-for-completing-concrete-mix-design-forms-form-312u/663769/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/instructions-for-completing-concrete-mix-design-forms-form-312u/663769.png","ImageObject",300,407,{"name":92,"@type":93},"noah","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-10-28",true,{"@type":102,"interactionType":103,"userInteractionCount":29},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the Producer’s Mix ID and what character limit applies?","Question",{"text":112,"@type":113},"The Producer’s Mix ID is located at the top of the form and is generated by the concrete producer, not NCDOT. It cannot exceed nine (9) characters.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How should identical NCDOT-approved mix designs be handled?",{"text":117,"@type":113},"If the mix design submitted is identical to another NCDOT-approved mix design at another plant, write the identical mix design number in the Reference Mix Design No. field. When it is identical to one already approved, the break data does not need to be submitted.",{"name":119,"@type":110,"acceptedAnswer":120},"Which mix properties must be entered and how is the W/C ratio determined?",{"text":121,"@type":113},"Enter slump, mortar content, air content, and maximum water. The Max W/C ratio is calculated using the maximum water weight and the total cementitious material weight based on the form inputs.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},663769,1793231365,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":29,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":39,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":129,"read_time":46},1099529839121,"https://ap-avatar.wpscdn.com/davatar_994ba38a5ba835b3df7d355c54d3ed8d","Instructions for Form 3 1 2U  \nThe contractor/concrete producer submits the mix design to the North Carolina Department ofTransportation, Structural Materials Laboratory, on the Materials and Test Form 312U at Concretedesigns@ncdot.gov . The form must be completely filled out and submitted with required data to avoid unnecessarily delays. Instructions on how to fill Form 312U correctly and completely are as follows:  \n1.) Fill in the Producer’s Mix ID located atthe top ofthe Form. NOTE that this ID cannot be more than nine (9) characters andit is generated by the Concrete Producer and not NCDOT.  \nExample: The producer’s mix ID is 856ABC919  \nForm 312U  \n\n| Producer's Mix ID | 8 | 5 | 6 | A | B | C | 9 | 1 | 9 |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n\n08Õ 17  \nNorth Carolina Department of Transportation, Division of Highways, Materials and Tests  \nUnit  \nStatement of Concrete Mix Design and Source of Materials  \n2.) In thea.  \ns  \ne  \nE  \ni  \np  \nc  \nw  \ncon  \nSele  \nntr  \nnclu  \nlan  \nom  \nith  \nd  \nc  \na  \nt  \np  \nta  \nt th  \ninm  \ndin  \n25  \nres  \nFor  \nble o  \ne Cl  \nent  \ng the  \nor P  \nsive  \nm 3  \nnthe form:  \nass ofConcrete, Yes or No for Vibration Status and Air  \nStatus. Enter the Concrete Producer Name, the NCDOT Plant No. prefix which indicate the type ofplant e.g. RM25 for ready✤mix S25 for prestress plant 25 , the date the form is completed, and the strength at 7 days and 28 days. Submit the restofthe test data  \n12U.  \nExample: A vibratedandair entrained class AA mix produced at NCDOT Plant No . RM777by Awesome Concrete Inc. with a 7 day and 28 day strength results of 3000 psi and 7000 psi respectively is submitted on January 1 st, 2018.  \n\n| Class ofConcrete | Class\u003Cbr>AA | Concrete Producer Name | Awesome Concrete Inc. |  |\n| --- | --- | --- | --- | --- |\n| Vibrated (Yes or No) | Yes | NCDOT Plant No . | RM 777 |  |\n| Air Entrained (Yes or No) | Yes | Date Requested | 1/1/201 8 |  |\n| Reference Mix Design No . | n/a | 7/2 8 DayBreak Data (psi) | 3000 | 7000 |\n\nb. Ifthe mix design being submitted is identical to another NCDOT approved mix design at another Plant, write/type the identical mix design number in the  \nReference Mix Design No . field. Note that ifyou are submitting a mix design identical to one already approved, you do not need to submit the break data. Example: Ifmix design is IDENTICAL to another approved mix design  \n( 8 8 82VF 856ABD919E) atRM 8 8 8  \n\n| Class ofConcrete | Class AA | Concrete Producer Name | Awesome Concrete Inc. |  |\n| --- | --- | --- | --- | --- |\n| Vibrated (Yes or No) | Yes | NCDOT Plant No . | RM 777 |  |\n| Air Entrained (Yes or No) | Yes | Date Requested | 1/1/201 8 |  |\n| Reference Mix Design No . | 8 8 82VF 856ABD919E | 7/2 8 DayBreak Data (psi) |  |  |\n\n3.) In the third table on the form:  \nEnter the Producer, Source, and quantities ofall the materials used in the mix design. Note that all quantities must be reported in English Units as indicatedon the form. Dosages for admixtures will be as recommended by the manufacturers and you must indicate the BRAND ofany admixture used in the mix. The source ofmixing watershall be from wells or public water systems which are suitable for drinking and must meet the criteria listed in Table 1024✭2 ofour Standards Specifications.  \nExample: 560 lbs. ofcement is produced by NCDOT and comes from Greensboro , NC Facility 3 andanAE❘RGC brandofair entraining agent produced by Air  \nEntraining Inc. are used for this mix. The mixing water, 28 gallons, comes from the city ofGreensboro Public Water System.  \n\n| Mix Design Proportions Based on SSD Mass of Aggregates |  |  |  |  |\n| --- | --- | --- | --- | --- |\n| Material | Producer | Source | Qty. per\u003Cbr>Cu. Yd. |  |\n| Cement | NCDOT | Facility 3 , Greensboro , NC | 560 | lbs. |\n| Pozzolan |  |  |  | lbs. |\n| Other Pozzolan |  |  |  | lbs. |\n| Fine Agg.+ M |  |  |  | lbs. |\n| Coarse Agg.+ M |  |  |  | lbs. |\n| Other Agg.+ M |  |  |  | lbs. |\n| Total Water | City | City","cbCaivqk3DwlvXHl","https://ap.wps.com/l/cbCaivqk3DwlvXHl","pdf",942669,"English","# Instructions for completing Form 312U\n## Producer’s Mix ID and basic form submission requirements\n## Concrete class, vibration/air status, and reference mix design\n## Mix design proportions and admixture brand requirements\n## Mix properties and calculated maximum water-cement ratio\n## Aggregate and cementitious data entry","[{\"question\":\"What is the Producer’s Mix ID and what character limit applies?\",\"answer\":\"The Producer’s Mix ID is located at the top of the form and is generated by the concrete producer, not NCDOT. It cannot exceed nine (9) characters.\"},{\"question\":\"How should identical NCDOT-approved mix designs be handled?\",\"answer\":\"If the mix design submitted is identical to another NCDOT-approved mix design at another plant, write the identical mix design number in the Reference Mix Design No. field. When it is identical to one already approved, the break data does not need to be submitted.\"},{\"question\":\"Which mix properties must be entered and how is the W/C ratio determined?\",\"answer\":\"Enter slump, mortar content, air content, and maximum water. The Max W/C ratio is calculated using the maximum water weight and the total cementitious material weight based on the form inputs.\"}]","Instructions for Completing Concrete Mix Design Forms - Form 312U | PDF"]