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Is a bonding agent recommended when placing shotcrete on an existing substrate?

April 26, 2017agent bonding existing placing recommended shotcrete Substrate

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Is a bonding agent recommended when placing shotcrete on an existing substrate?

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A bonding agent is not required or recommended. A properly prepared substrate in a saturated surface-dry condition (SSD) is the optimum condition for application of shotcrete. Bonding agents may act as a bond breaker in some circumstances.