Page 9-2 M 41-10
9-01 Cement9-01 Cement
9-01.1 Types of Cement
Cement shall be classified as portland cement, blended hydraulic cement, or rapid hardening hydraulic cement.
9-01.2 Specifications
9-01.2(1) Portland Cement
Portland cement shall meet the requirements of AASHTO M85 or ASTM C150 Types I, II, or III portland cement, except that the cement shall not contain more than 0.75 percent alkalies by weight calculated as Na20 plus 0.658 K20 and the content of Tricalcium aluminate (C3A) shall not exceed 8 percent by weight. The time of setting shall be determined by the Vicat Test method in accordance with AASHTO T 131 or ASTM C191.
9-01.2(1)A Low Alkali Cement
When low alkali portland cement is required, the percentage of alkalies in the cement shall not exceed 0.60 percent by weight calculated as Na20 plus 0.658 K20. This limitation shall apply to all types of portland cement.
9-01.2(1)B Blended Hydraulic Cement
Blended hydraulic cement shall be either Type IP(X)(MS), Type IS(X)(MS), Type IT(PX) (LY), Type IT(SX)(LY), or Type IL(X) cement conforming to AASHTO M240 or ASTM C595, except that the portland cement used to produce blended hydraulic cement shall not contain more than 0.75 percent alkalies by weight calculated as Na20 plus 0.658 K20 and shall meet the following additional requirements:
1.Type IP(X)(MS) – Portland-Pozzolan Cement where (X) equals the targeted percentage of fly ash, the fly ash is limited to a maximum of 35 percent by weight of the cementitious material; (MS) indicates moderate sulfate resistance.
2.Type IS(X)(MS) – Portland Blast- Furnace Slag Cement, where: (X) equals the targeted percentage of ground granulated blast-furnace slag, the ground granulated blast furnace slag is limited to a maximum of 50 percent by weight of the cementitious material; (MS) indicates moderate sulfate resistance.
3.Type IT(PX)(LY), where (PX) equals the targeted percentage of pozzolan, and (LY) equals the targeted percentage of limestone. The pozzolan (PX) shall be Class F fly ash and shall be a maximum of 35 percent. (LY) shall be a minimum of 5 percent and a maximum of 15 percent. Separate testing of each source of fly ash each at each proposed replacement level shall be conducted in accordance with ASTM C1012. Expansion at 180 days shall be 0.10 percent or less.
4.Type IT(SX)(LY), where (SX) equals the targeted percentage of slag cement, and (LY) equals the targeted percentage of limestone. (SX) shall be a maximum of 50 percent. (LY) shall be a minimum of 5 percent and a maximum of 15 percent. Separate testing of each source of slag at each proposed replacement level shall be conducted in accordance with ASTM C1012. Expansion at 180 days shall be 0.10 percent or less.
5.Type IL(X), where (X) equals the targeted percentage of limestone, and shall be a minimum of 5 percent and a maximum of 15 percent. Testing shall be conducted in accordance with ASTM C1012. Expansion at 180 days shall be 0.10 percent or less. M 41-10 Page 9-3 Cement 9-01The source and weight of the fly ash or ground granulated blast furnace slag shall be certified on the cement mill test report or cement certificate of analysis and shall be reported as a percent by weight of the total cementitious material. The fly ash or ground granulated blast furnace slag constituent content in the finished cement will not vary more than plus or minus 5 percent by weight of the finished cement from the certified value. Fly ash shall meet the requirements of Section 9-23.9 of these Standard Specifications . Ground granulated blast furnace slag shall meet the requirements of Section 9-23.10 of these Standard Specifications . Limestone shall meet the requirements of AASHTO M240 or ASTM C595.
9-01.2(2) Rapid Hardening Hydraulic Cement
Rapid hardening hydraulic cement shall meet the requirements of ASTM C 1600.
9-01.3 Tests and Acceptance
Cement may be accepted by the Engineer based on the cement mill test report number or cement certificate of analysis number indicating full conformance to the Specifications. All shipments of the cement to the Contractor or concrete supplier shall identify the applicable cement mill test report number or cement certificate of analysis number and shall be provided by the Contractor or concrete supplier with all concrete deliveries. Cement producers/suppliers that certify portland cement or blended hydraulic cement shall participate in the Cement Acceptance Program as described in WSDOT Standard Practice QC 1 . Rapid hardening hydraulic cement producers/suppliers are not required to participate in WSDOT Standard Practice QC 1. Each mixing facility or plant utilizing portland cement shall be equipped with a suitable means or device for obtaining a representative sample of the cement. The device shall enable the sample to be readily taken in proximity to the cement weigh hopper and from a container or conveyor holding only cement. Cement may be tested using samples taken at the job site by the Engineer for submission to the State Materials Laboratory for testing.
9-01.4 Storage on the Work Site
At the request of the Engineer, the Contractor shall provide test data to show that cement stored on site for longer than 60 days meets the requirements of Section 9-01 . Tests shall be conducted on samples taken from the site in the presence of the Engineer. Test results that meet the requirements of Section 9-01 shall be valid for 60 days from the date of sampling, after which the Engineer may require further testing.
Source: Washington Standard Specifications for Road, Bridge, and Municipal Construction, 2024 Edition. Pages 912–913 of 1,151.