10.07.2015 Views

เอกสารแนบ TOR - จัดซื้อจัดจ้าง กรมชลประทาน

เอกสารแนบ TOR - จัดซื้อจัดจ้าง กรมชลประทาน

เอกสารแนบ TOR - จัดซื้อจัดจ้าง กรมชลประทาน

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Aตารางที่ 2ฝายยางRubber Dam Bag BodyNO TEST SPECIFICATION TEST METHODTENSILE STRENGTH OFWARP & WEFT BEFORE AGINGA-1 Warp (combined plies) ≥ 8 times of designed ASTM-D751tensionA-2 Weft (combined plies)≥ 2/3 over calculatedwarpTensile strengthB AFTER AGING (1) ASTM-D571B-1 Warp (Combined plies)≥ 80% of tensileStrengthBefore aging and overC EFFECT OF LIQUIDS (2) ASTM-D571C-1 Warp (Combined plies)≥ 80% of tensileStrengthBefore immersion andoverD ADHESION STRENGTHBETWEEN RUBBER AND FABRICD-1 Before immersion in water ≥ 6 Kg/cm ASTM-D413D-2 Afier immersion in water for ≥ 4 Kg/cm96 hrs. At 70 o CRemarks :(1) At 100 o C, 96 hrs.(2) Change in tensile strength after 96 hrs. in water at 70 o C16

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