silica fume specification

How to Evaluate the Quality of a Silica Fume Supplier Without Visiting the Factory?

How to Evaluate the Quality of a Silica Fume Supplier Without Visiting the Factory?

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Specifying silica fume from an overseas supplier without an on-site audit introduces real risk: a batch with SiO₂ below 85%, an LOI above 6%, or a moisture content that triggers clumping can compromise pozzolanic reactivity, stall a UHPC mix design, or trigger outright rejection at the job site. The cost is not just the rejected […]

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IS 15388 and ASTM C1240

IS 15388 and ASTM C1240: Are They Compatible for Indian Infrastructure Projects?

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Engineers specifying microsilica for Indian infrastructure projects face a recurring dilemma: must a silica fume conform strictly to IS 15388 (Indian standard), or is a product meeting the globally recognised ASTM C1240 sufficient? The wrong answer leads to rejected deliveries, delayed approvals, or—worse—concrete that falls short of durability requirements in India’s aggressive service environments. This

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