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A platform for research: civil engineering, architecture and urbanism
Quick-hardening super-tough high-performance filling concrete and preparation method thereof
The invention relates to quick-hardening super-tough high-performance filling concrete, which is prepared from the following components in kg/m < 3 >: 490 to 510 parts of quick-hardening sulphoaluminate cement, 160 to 170 parts of Portland cement (52.5 R), 160 to 170 parts of composite admixture, 1010 to 1030 parts of quartz sand, 195 to 205 parts of silica fume, 42.56 to 53.20 parts of polycarboxylate superplasticizer, 220 to 230 parts of water, 8 to 10 parts of retarder and 1.0 to 2.0 percent of steel fiber by volume. The compressive strength of the quick-hardening super-tough high-performance filling concrete is larger than 40 MPa after 4 h, the traffic allowable strength requirement is met, and the traffic closing time can be greatly shortened or traffic is not closed. In addition, the toughness indexes I5, I10 and I20 of the concrete all meet the bending toughness index requirements (I5 is greater than or equal to 5, I10 is greater than or equal to 11, and I20 is greater than or equal to 22).
本发明涉及一种快硬超韧高性能填充混凝土，以kg/m3为单位，包括以下组分：快硬硫铝酸盐水泥490‑510、硅酸盐水泥(52.5R)160‑170、复合掺料160‑170、石英砂1010‑1030、硅灰195‑205、聚羧酸减水剂42.56‑53.20、水220‑230、缓凝剂用量为8‑10，钢纤维体积掺量为1.0％‑2.0％。本发明快硬超韧高性能填充混凝土在4h时，抗压强度大于40MPa，满足通车允许强度要求，可大大缩短封闭交通时间或不封闭交通。另外该混凝土的韧性指数I5、I10和I20均满足弯曲韧性指标要求(I5≥5，I10≥11，I20≥22)。
Quick-hardening super-tough high-performance filling concrete and preparation method thereof
The invention relates to quick-hardening super-tough high-performance filling concrete, which is prepared from the following components in kg/m < 3 >: 490 to 510 parts of quick-hardening sulphoaluminate cement, 160 to 170 parts of Portland cement (52.5 R), 160 to 170 parts of composite admixture, 1010 to 1030 parts of quartz sand, 195 to 205 parts of silica fume, 42.56 to 53.20 parts of polycarboxylate superplasticizer, 220 to 230 parts of water, 8 to 10 parts of retarder and 1.0 to 2.0 percent of steel fiber by volume. The compressive strength of the quick-hardening super-tough high-performance filling concrete is larger than 40 MPa after 4 h, the traffic allowable strength requirement is met, and the traffic closing time can be greatly shortened or traffic is not closed. In addition, the toughness indexes I5, I10 and I20 of the concrete all meet the bending toughness index requirements (I5 is greater than or equal to 5, I10 is greater than or equal to 11, and I20 is greater than or equal to 22).
本发明涉及一种快硬超韧高性能填充混凝土，以kg/m3为单位，包括以下组分：快硬硫铝酸盐水泥490‑510、硅酸盐水泥(52.5R)160‑170、复合掺料160‑170、石英砂1010‑1030、硅灰195‑205、聚羧酸减水剂42.56‑53.20、水220‑230、缓凝剂用量为8‑10，钢纤维体积掺量为1.0％‑2.0％。本发明快硬超韧高性能填充混凝土在4h时，抗压强度大于40MPa，满足通车允许强度要求，可大大缩短封闭交通时间或不封闭交通。另外该混凝土的韧性指数I5、I10和I20均满足弯曲韧性指标要求(I5≥5，I10≥11，I20≥22)。
Quick-hardening super-tough high-performance filling concrete and preparation method thereof
一种快硬超韧高性能填充混凝土及其制备方法
LONG XIANG (author) / XIANG YANMAO (author) / XU ZHIDONG (author) / LIU JIE (author) / TU WENJIE (author) / JIANG HAIBO (author) / LI JUN (author) / CHEN YUANYUAN (author) / CHEN YONGXIN (author) / XIE ZHE (author)
2024-06-18
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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