A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High-strength anti-crack self-compacting concrete for wind power concrete tower drum and application of high-strength anti-crack self-compacting concrete
The invention relates to high-strength anti-cracking self-compacting concrete for a wind power concrete tower drum and application of the high-strength anti-cracking self-compacting concrete, the self-compacting concrete is prepared from the following raw materials according to the dosage per cubic meter: 340 to 460kg of cement, 170 to 261kg of mineral admixture, 700 to 850kg of machine-made sand, 850 to 950kg of gravel, 0 to 40kg of shrinkage reducing component, 0 to 7kg of fiber, 8 to 15kg of water reducing agent and 130 to 150kg of water, the mineral admixture is a combination of any more than three of fly ash, volcanic ash, silica fume, metakaolin, microbeads and limestone powder. The self-compacting concrete disclosed by the invention has the advantages of small shrinkage, excellent later-stage crack resistance, low cracking area and excellent early-stage crack resistance, and can solve the problems of large shrinkage deformation, easiness in cracking and the like of high-strength concrete caused by oversize cementing materials, high hydration heat and atrocious weather conditions such as high temperature, dryness, strong wind, sunlight and the like; and therefore, the safety and reliability of the wind power concrete tower drum in the operation process are improved.
本发明涉及一种风电混凝土塔筒用高强抗裂自密实混凝土及其应用，按照单方用量计，所述自密实混凝土的原料包括水泥340～460kg、矿物掺合料170～261kg、机制砂700～850kg、碎石850～950kg、减缩组分0～40kg、纤维0～7kg、减水剂8～15kg和水130～150kg，其中，所述矿物掺合料为粉煤灰、火山灰、硅灰、偏高岭土、微珠、石灰石粉中任意三种以上的组合。本发明的自密实混凝土收缩小，具有优异的后期抗裂性能，同时开裂面积低，具有优异的早期抗裂性能，能够解决高强混凝土因胶凝材料过大、水化热大以及在高温、干燥、强风、日照等恶劣气候条件下导致的混凝土收缩变形大、易开裂等问题，进而提高风电混凝土塔筒在运行过程中的安全可靠性。
High-strength anti-crack self-compacting concrete for wind power concrete tower drum and application of high-strength anti-crack self-compacting concrete
The invention relates to high-strength anti-cracking self-compacting concrete for a wind power concrete tower drum and application of the high-strength anti-cracking self-compacting concrete, the self-compacting concrete is prepared from the following raw materials according to the dosage per cubic meter: 340 to 460kg of cement, 170 to 261kg of mineral admixture, 700 to 850kg of machine-made sand, 850 to 950kg of gravel, 0 to 40kg of shrinkage reducing component, 0 to 7kg of fiber, 8 to 15kg of water reducing agent and 130 to 150kg of water, the mineral admixture is a combination of any more than three of fly ash, volcanic ash, silica fume, metakaolin, microbeads and limestone powder. The self-compacting concrete disclosed by the invention has the advantages of small shrinkage, excellent later-stage crack resistance, low cracking area and excellent early-stage crack resistance, and can solve the problems of large shrinkage deformation, easiness in cracking and the like of high-strength concrete caused by oversize cementing materials, high hydration heat and atrocious weather conditions such as high temperature, dryness, strong wind, sunlight and the like; and therefore, the safety and reliability of the wind power concrete tower drum in the operation process are improved.
本发明涉及一种风电混凝土塔筒用高强抗裂自密实混凝土及其应用，按照单方用量计，所述自密实混凝土的原料包括水泥340～460kg、矿物掺合料170～261kg、机制砂700～850kg、碎石850～950kg、减缩组分0～40kg、纤维0～7kg、减水剂8～15kg和水130～150kg，其中，所述矿物掺合料为粉煤灰、火山灰、硅灰、偏高岭土、微珠、石灰石粉中任意三种以上的组合。本发明的自密实混凝土收缩小，具有优异的后期抗裂性能，同时开裂面积低，具有优异的早期抗裂性能，能够解决高强混凝土因胶凝材料过大、水化热大以及在高温、干燥、强风、日照等恶劣气候条件下导致的混凝土收缩变形大、易开裂等问题，进而提高风电混凝土塔筒在运行过程中的安全可靠性。
High-strength anti-crack self-compacting concrete for wind power concrete tower drum and application of high-strength anti-crack self-compacting concrete
一种风电混凝土塔筒用高强抗裂自密实混凝土及其应用
SHI XINGXIANG (author) / GUO YAOXIONG (author) / LUO JINGJING (author) / LIU JIHONG (author) / TIAN YIN (author) / ZHOU HONGYAN (author) / XU ZHIYANG (author) / ZHANG RUI (author) / SONG QIULEI (author) / ZHANG LILI (author)
2023-07-21
Patent
Electronic Resource
Chinese