R2024-29 Resolution Accepting the Bid and Authorizing the Execution of a Contract with Reyhan Bros., Inc. dba Sangamo Construction Company and Appropriating Motor Fuel Tax Funds for the West Mound Road Bridge over Stevens Creek

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laboratory test results showing the product meets Department specifications will be required. The product shall be a packaged, pre-blended, and dry combination of materials, for the wet-mix shotcrete method according to ASTM C 1480. A non- chloride accelerator may be used according to the shotcrete manufacturer's recommendations. The shotcrete shall be Type FA or CA, Grade FR, and Class I. The fibers shall be Type III synthetic according to ASTM C 1116. The packaged shotcrete shall have a water soluble chloride ion content of less than 0.40 Ib/cu yd (0.24 kg/cu m). The test shall be performed according to ASTM C 1218, and the hardened shotcrete shall have an age of 28 to 42 days at the time of test. The ASTM C 1218 test shall be performed by an independent lab a minimum of once every two years, and the test results shall be provided to the Department. Each individual aggregate used in the packaged shotcrete shall have either a maximum ASTM C 1260 expansion of 0.16 percent or a maximum ASTM C 1293 expansion of 0.040 percent. However, the ASTM C 1260 value may be increased to 0.27 percent for each individual aggregate if the cement total equivalent alkali content (Na2O + 0.658K2O) does not exceed 0.60 percent. As an alternative to these requirements, ASTM C 1567 testing which shows the packaged shotcrete has a maximum expansion of 0.16 percent may be submitted. The ASTM C 1260, C 1293, or C 1567 test shall be performed a minimum of once every two years. The 7 and 28 day compressive strength requirements in ASTM C 1480 shall not apply. Instead the shotcrete shall obtain a minimum compressive strength of 4000 psi (27,500 kPa) at 14 days. The packaged shotcrete shall be limited to the following proportions: The portland cement and finely divided minerals shall be 6.05 cwt/cu yd (360 kg/cu m) to 8.50 cwt/cu yd (505 kg/cu m) for Type FA and 6.05 cwt/cu yd (360 kg/cu. m) to 7.50 cwt/cu yd (445 kg/cu m) for Type CA. The portland cement shall not be below 4.70 cwt/cu yd (279 kg/cu m) for Type FA or CA. The finely divided mineral(s) shall constitute a maximum of 35 percent of the total cement plus finely divided mineral(s). Class F fly ash is optional and the maximum shall be 20 percent by weight (mass) of cement. iClass C fly ash is optional and the maximum shall be 25 percent by weight (mass) of cement. Ground granulated blast-furnace slag is optional and the maximum shall be 30 percent by weight (mass) of cement. i