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Ultra-high performance concrete based on composite cementing material system
The invention discloses ultra-high performance concrete based on a composite cementing material system. The ultra-high performance concrete is prepared from a composite cementing material, quartz sand, Guami stone, steel fiber, a water reducing agent and water, the composite cementing material is prepared by compounding cement, fly ash beads, silica fume and mineral powder, and the molar ratio of chemical components in the composite cementing material comprises that the ratio of SiO2 to Al2O3 is 6.4-8.3; the ratio of SiO2 to Na2O is 121.4 to 203.8; the ratio of SiO2 to CaO is 0.9 to 1.1; and the ratio of SiO2 to SO3 is 82.2 to 281.7. The composite cementing material system is used for preparing the ultra-high performance concrete, the compressive strength ranges from 26.97 MPa to 139.8 MPa, the breaking strength ranges from 6.4 MPa to 20.27 MPa, and the fluidity ranges from 144.5 mm to 162.5 mm. Through organic combination of different types of cementing materials, rapid hardening and early strength of the ultra-high performance concrete are achieved, the performance of the ultra-high performance concrete is improved, and carbon emission is reduced; and the prepared ultra-high performance concrete has the advantages of rapid hardening, early strength, high toughness, high impact resistance, high durability and the like, is suitable for rapid repair and replacement of bridge expansion joint transition areas and other concrete members, and has good popularization and application prospects.
本发明公开一种基于复合胶凝材料体系的超高性能混凝土，采用复合凝胶材料、石英砂、瓜米石、钢纤维、减水剂和水制备而成，复合凝胶材料由水泥、粉煤灰微珠、硅灰、矿粉复配而成，且复合凝胶材料中化学成分的摩尔比如下：SiO2：Al2O3为6.4～8.3；SiO2：Na2O为121.4～203.8；SiO2：CaO为0.9～1.1；SiO2：SO3为82.2～281.7。本发明利用复合胶凝材料体系制备超高性能混凝土，抗压强度在26.97MPa～139.8MPa之间，抗折强度在6.4MPa～20.27MPa之间，流动度在144.5mm～162.5mm之间，通过不同种类胶凝材料的有机结合实现超高性能混凝土的快硬早强，改善其性能，并降低了碳排放，依据本发明所制得的超高性能混凝土具有快硬早强、高韧性、高抗冲击性与高耐久性等优点，适用桥梁伸缩缝过渡区及其他混凝土构件的快速修补与更换，具有良好的推广应用前景。
Ultra-high performance concrete based on composite cementing material system
The invention discloses ultra-high performance concrete based on a composite cementing material system. The ultra-high performance concrete is prepared from a composite cementing material, quartz sand, Guami stone, steel fiber, a water reducing agent and water, the composite cementing material is prepared by compounding cement, fly ash beads, silica fume and mineral powder, and the molar ratio of chemical components in the composite cementing material comprises that the ratio of SiO2 to Al2O3 is 6.4-8.3; the ratio of SiO2 to Na2O is 121.4 to 203.8; the ratio of SiO2 to CaO is 0.9 to 1.1; and the ratio of SiO2 to SO3 is 82.2 to 281.7. The composite cementing material system is used for preparing the ultra-high performance concrete, the compressive strength ranges from 26.97 MPa to 139.8 MPa, the breaking strength ranges from 6.4 MPa to 20.27 MPa, and the fluidity ranges from 144.5 mm to 162.5 mm. Through organic combination of different types of cementing materials, rapid hardening and early strength of the ultra-high performance concrete are achieved, the performance of the ultra-high performance concrete is improved, and carbon emission is reduced; and the prepared ultra-high performance concrete has the advantages of rapid hardening, early strength, high toughness, high impact resistance, high durability and the like, is suitable for rapid repair and replacement of bridge expansion joint transition areas and other concrete members, and has good popularization and application prospects.
本发明公开一种基于复合胶凝材料体系的超高性能混凝土，采用复合凝胶材料、石英砂、瓜米石、钢纤维、减水剂和水制备而成，复合凝胶材料由水泥、粉煤灰微珠、硅灰、矿粉复配而成，且复合凝胶材料中化学成分的摩尔比如下：SiO2：Al2O3为6.4～8.3；SiO2：Na2O为121.4～203.8；SiO2：CaO为0.9～1.1；SiO2：SO3为82.2～281.7。本发明利用复合胶凝材料体系制备超高性能混凝土，抗压强度在26.97MPa～139.8MPa之间，抗折强度在6.4MPa～20.27MPa之间，流动度在144.5mm～162.5mm之间，通过不同种类胶凝材料的有机结合实现超高性能混凝土的快硬早强，改善其性能，并降低了碳排放，依据本发明所制得的超高性能混凝土具有快硬早强、高韧性、高抗冲击性与高耐久性等优点，适用桥梁伸缩缝过渡区及其他混凝土构件的快速修补与更换，具有良好的推广应用前景。
Ultra-high performance concrete based on composite cementing material system
一种基于复合胶凝材料体系的超高性能混凝土
WANG MENGYU (author) / XU FANG (author) / LI XIANG (author) / HAO XIANYUN (author) / LI LEI (author) / KONG FANSHENG (author) / QIN DUZHI (author) / HU JIANGHAI (author) / MIAO TINGXUAN (author) / PENG CHAO (author)
2022-01-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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