A super-long underwater pile foundation machine-made sand self-compacting concrete and its preparation method
A self-compacting concrete and machine-made sand technology, applied in the field of building materials, can solve the problems of insufficient concrete setting time, slow pile foundation construction speed, poor plasticity, etc., and achieve the effect of super long setting time
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[0020] A method for preparing super-long underwater pile foundation machine-made sand self-compacting concrete, comprising the following steps:
[0021] Step 1: Weigh the cement, nano-scale spherical siliceous powder, micron-scale sphere siliceous powder, high-activity silica-calcium powder, A mechanism crushed stone, B mechanism crushed stone according to the mass ratio of each component in Example 1-6 , machine-made sand, admixture, water;
[0022] Step 2: Fully stir and mix the weighed admixture and water for 5 minutes to obtain a uniform mixture.
[0023] Step 3: Put the weighed cement, nano-sized spheroidal siliceous powder, micron-sized spheroidal siliceous powder, active silica-calcium ore powder, A mechanism crushed stone, B mechanism crushed stone, and mechanism sand in the concrete mixer for 2 minutes to dry mix fully The mixed dry material is mixed, and then the mixed liquid is placed in the mixed dry material and stirred for 2-5 minutes to obtain the ultra-long un...
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