High-strength prestressed concrete pipe-styled pile blended with ground river sands and production method thereof
A high-strength concrete and prestressed technology, applied in chemical instruments and methods, sheet pile walls, reinforcement molding, etc., can solve the problems of insufficient material sources, low mill output, and high processing costs, and achieve rich sources of river sand, Good grindability and the effect of improving strength
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Embodiment 1
[0020] Produce A-type prestressed high-strength concrete pipe piles with an outer diameter of 400mm and a wall thickness of 95mm. The materials are configured according to the following weight ratio, (cement + finely ground river sand): sand: stone: naphthalene superplasticizer: water: finely ground river sand = 1: 1.58: 2.69: 0.0065: 0.28: 0.25. Among them, the specific surface area of fine river sand is 380m 2 / kg, the stone is continuously graded with a particle size of 5-25mm, the crushing index value is ≤7%, and the mud content is ≤0.5%. Cover 100% of the sand on the bottom of the forced concrete mixer, and then add 100% of the sand Cement and 100% finely ground river sand, dry mix for 15s, add 90% of the set water, stir for 30-40s, then add 100% stones for stirring, add water reducer within 10-20s, and then according to the mixture The actual water content, and then add the remaining water as appropriate, stir evenly, the total time is not less than 3.5min. Then, in ...
Embodiment 2
[0022] Produce A-type prestressed high-strength concrete pipe piles with an outer diameter of 500mm and a wall thickness of 125mm. The materials are configured according to the following weight ratio, (cement + finely ground river sand): sand: stone: naphthalene-based superplasticizer: water: finely ground river sand = 1: 1.45: 2.82: 0.0066: 0.29: 0.30. Among them, the specific surface area of fine river sand is 400m 2 / kg, the stone is continuously graded with a particle size of 5-25mm, the crushing index value is ≤7%, and the mud content is ≤0.5%. Cover 100% of the sand on the bottom of the forced concrete mixer, and then add 100% of the sand Cement and 100% finely ground river sand, dry mix for 15s, add 90% of the set water, stir for 30-40s, then add 100% stones for stirring, add water reducer within 10-20s, and then according to the mixture The actual water content, and then add the remaining water as appropriate, stir evenly, the total time is not less than 3.5min. Th...
Embodiment 3
[0024] Produce AB-type prestressed high-strength concrete pipe piles with an outer diameter of 500mm and a wall thickness of 100mm. The materials are configured according to the following weight ratio, (cement + finely ground river sand): sand: stone: naphthalene-based superplasticizer: water: finely ground river sand = 1: 1.54: 2.73: 0.0065: 0.29: 0.40. Among them, the specific surface area of fine river sand is 380m 2 / kg, the stone is continuously graded with a particle size of 5-25mm, the crushing index value is ≤7%, and the mud content is ≤0.5%. Cover 100% of the sand on the bottom of the forced concrete mixer, and then add 100% of the sand Cement and 100% finely ground river sand, dry mix for 15s, add 90% of the set water, stir for 30-40s, then add 100% stones for stirring, add water reducer within 10-20s, and then according to the mixture The actual water content, and then add the remaining water as appropriate, stir evenly, the total time is not less than 3.5min. T...
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