SECTION 701 — CEMENT
701.1 GENERAL —
Obtain cement from a producer listed in Bulletin 15 and from silos set aside for exclusive Department use. Prior to shipping cement to the project, notify the MTD of any change in the source of raw materials, in the methods of manufacture, or in the normal composition of cement. Do not use retrieved or reclaimed cement. Do not use cement with a material temperature exceeding 150F at the time of delivery to the mixer.
(a) Quality Control.
When a cement silo is filled, submit a copy of the required test results to the MTD for verification of compliance with Department specifications.
Specify the type of material, silo number, and company lot number on the certificate of compliance, for cross-referencing to the bill of lading
Have a responsible company official sign the certificate.
Obtain three verification samples from each silo used for Department shipments. Take random samples from each one-third portion of the silo.
If the capacity of the silo exceeds 2,500 tons, obtain five verification samples from each silo used for Department purposes. Take random samples from each one-fifth portion of the silo.
Forward the samples to the MTD for verification testing.
Levels of Certification.
The Bureau of Construction and Materials' Quality Assurance teams will periodically inspect the quality control plan and facilities and sample material at the point where the material is introduced into the final product. Verification and quality assurance samples will determine the level of certification.
2.a Level 1.
When the results of three consecutive samples deviate from specification limits for any characteristic measured, proceed as follows:
Do not ship material on the basis of certification.
Provide additional inspection services beyond the supplier's staff.
Increase the frequency of sampling and testing over that stated in the quality control plan, if required.
When Department inspection is required, make a request for inspection services to the Bureau of Construction and Materials. Inspection will be between the hours of 8:00 AM and 4:00 PM, weekdays only. Department representatives will sample each silo, witness testing, authorize shipment, and sign the bill of lading.
When acceptable quality control is demonstrated, the supplier will be upgraded to Level II.
2.b Level II.
When the results of two consecutive samples deviate from specification limits for any characteristic measured, proceed as follows:
Perform quality control practices, using the supplier inspection system.
Sample and test at increased frequency, when directed.
Ship on the basis of the bill of lading, certifying compliance with specifications after quality control, sampling, and testing.
When successful quality control is demonstrated, the supplier will be upgraded to Level III.
2.c Level III.
Ship on the basis of the bill of lading, certifying compliance with specifications.
Submit verification samples from each silo used for Department shipments. The level of certification will be reclassified if sample results deviate from specification limit(s) as described for Levels I and II.
Handling and Transportation.
Section 106.06 and as follows:
Furnish the vendor's bill of lading for each shipment (one copy retained by the vendor and one copy included with the shipment to the project).
Use a form acceptable to the MTD, containing the following information:
Statement that material has been tested and meets Department specifications.
Type of Material
Company Lot Identification
Date of Shipment
Producer's Name and Location
Consignee's Name and Location
Temperature of Cement
Quantity (tons) Ship bulk cement in clean, acceptable metal, rubber or plastic waterproof containers or compartments. Ship bagged cement (94 pounds net per bag) in suitable paper bags with the brand, type, and manufacturer's name printed on them. Keep the bags protected from the weather. Bags with net weight more than 3% below that specified will be rejected.
As specified in Section 106.05 and as follows:
Provide storage capacity sufficient to maintain the paving schedule.
Store bulk cement in acceptable silos.
Store bagged cement in enclosed buildings.
Store bagged cement in stacks not exceeding eight bags in height and cover.
Chemical and Physical Requirements and Testing.
AASHTO-M85 and AASHTO-M240, except sample in accordance with PTM No. 509.
(f) Limited Number of Sources.
Obtain cement for each project from a single source, unless otherwise permitted in writing. Separate cement of different types and from different sources. Use each type and source in continuous, segregated portions of the project. When possible, limit cement used in an individual structure to a single type and source. When this is not possible, use one type and source for footers, piers and abutments and one type source for superstructures.
Most Current Supplement
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