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High-crack-resistance and radiation-resistance mass concrete and preparation method thereof
The invention discloses mass concrete with high crack resistance and radiation resistance. The mass concrete is prepared from the following components in parts by weight: 250 to 300 parts of cement, 10 to 30 parts of modified boron-containing mine tailings, 60 to 90 parts of II-grade fly ash, 600 to 900 parts of ordinary sand, 250 to 1250 parts of cooling aggregate, 250 to 1250 parts of normal-temperature aggregate and 165 parts of water, the modified boron-containing mine tailings are obtained by carrying out high-temperature calcination modification on industrial waste residues discharged after borax is produced from ascharite and then grinding; the loss on ignition is 20%-30%; in the chemical components, the content of MgO is 40-50 wt%, and the content of B2O3 is 25-40 wt%; the average particle diameter is 20-50 [mu] m; the boron-containing mine tailings are treated and modified, so that the utilization efficiency of the boron-containing mine tailings in anti-radiation concrete is improved, and particularly, the shrinkage cracking resistance of the boron-containing mine tailings in the concrete is improved; the discharging and pouring temperature of the concrete can be effectively ensured through an icing and cooling measure on the coarse aggregate; meanwhile, by combining the physicochemical properties of the modified boron-containing mine tailings, aggregate icing cooling and modified clay, the radiation resistance and cracking resistance of the mass concrete are effectively improved.
本发明公开了一种高抗裂抗辐射大体积混凝土，组成按重量份数计如下：水泥250‑300份，改性含硼矿山尾矿10‑30份，Ⅱ级粉煤灰60‑90份，普通砂600‑900份，降温骨料250‑1250份，常温骨料250‑1250份，水165份；所述改性含硼矿山尾矿为硼镁矿生产硼砂后排出的工业废渣经高温煅烧改性后研磨获得；烧失量为20％‑30％；化学成分中MgO含量为40‑50wt％，B2O3含量为25～40wt％；平均颗粒直径为20‑50μm；本发明对含硼矿山尾矿进行处理改性，增加其在抗辐射混凝土中利用效率，特别是提高其在混凝土中的抗收缩开裂的性能；通过对粗骨料的覆冰降温措施，能够有效保证混凝土的出机及浇筑温度；同时结合改性含硼矿山尾矿、骨料覆冰降温及改性粘土的理化性质，有效提高大体积混凝土的抗辐射性及抗开裂性能。
High-crack-resistance and radiation-resistance mass concrete and preparation method thereof
The invention discloses mass concrete with high crack resistance and radiation resistance. The mass concrete is prepared from the following components in parts by weight: 250 to 300 parts of cement, 10 to 30 parts of modified boron-containing mine tailings, 60 to 90 parts of II-grade fly ash, 600 to 900 parts of ordinary sand, 250 to 1250 parts of cooling aggregate, 250 to 1250 parts of normal-temperature aggregate and 165 parts of water, the modified boron-containing mine tailings are obtained by carrying out high-temperature calcination modification on industrial waste residues discharged after borax is produced from ascharite and then grinding; the loss on ignition is 20%-30%; in the chemical components, the content of MgO is 40-50 wt%, and the content of B2O3 is 25-40 wt%; the average particle diameter is 20-50 [mu] m; the boron-containing mine tailings are treated and modified, so that the utilization efficiency of the boron-containing mine tailings in anti-radiation concrete is improved, and particularly, the shrinkage cracking resistance of the boron-containing mine tailings in the concrete is improved; the discharging and pouring temperature of the concrete can be effectively ensured through an icing and cooling measure on the coarse aggregate; meanwhile, by combining the physicochemical properties of the modified boron-containing mine tailings, aggregate icing cooling and modified clay, the radiation resistance and cracking resistance of the mass concrete are effectively improved.
本发明公开了一种高抗裂抗辐射大体积混凝土，组成按重量份数计如下：水泥250‑300份，改性含硼矿山尾矿10‑30份，Ⅱ级粉煤灰60‑90份，普通砂600‑900份，降温骨料250‑1250份，常温骨料250‑1250份，水165份；所述改性含硼矿山尾矿为硼镁矿生产硼砂后排出的工业废渣经高温煅烧改性后研磨获得；烧失量为20％‑30％；化学成分中MgO含量为40‑50wt％，B2O3含量为25～40wt％；平均颗粒直径为20‑50μm；本发明对含硼矿山尾矿进行处理改性，增加其在抗辐射混凝土中利用效率，特别是提高其在混凝土中的抗收缩开裂的性能；通过对粗骨料的覆冰降温措施，能够有效保证混凝土的出机及浇筑温度；同时结合改性含硼矿山尾矿、骨料覆冰降温及改性粘土的理化性质，有效提高大体积混凝土的抗辐射性及抗开裂性能。
High-crack-resistance and radiation-resistance mass concrete and preparation method thereof
一种高抗裂抗辐射大体积混凝土及其制备方法
WANG ZIJIE (author) / ZHANG YUAN (author) / LU JIALIN (author) / WANG JUN (author) / LIU DONG (author) / YUAN WENTAO (author)
2024-01-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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