A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Full-recycled fine aggregate ultra-high performance concrete and preparation method thereof
The invention belongs to the technical field of ultra-high performance concrete, and discloses full-recycled fine aggregate ultra-high performance concrete which is composed of full-recycled fine aggregate, a composite cementing material, steel fibers, water and a water reducing agent. The composite cementing material is composed of Portland cement and an auxiliary cementing material, wherein the use amount of the Portland cement is not less than 55% of the mass of the composite cementing material; the dosage of the water is 18% of the mass of the composite cementing material; the dosage of the water reducing agent is 0.5% of the mass of the composite cementing material; the volume of the composite cementitious material with the unit volume of 1m < 3 > is equal to the volume occupied by gaps under close packing of the fully-recycled fine aggregate; the volume fraction of the doped steel fibers in the composite cementing material with the unit volume of 1m < 3 > is not more than 6%. The ultra-high performance concrete prepared from the fully-recycled fine aggregate is excellent in performance, the problem that the ultra-high performance concrete is difficult to prepare from the fully-recycled fine aggregate is solved, comprehensive utilization of the recycled fine aggregate is achieved, and the method is convenient to popularize and use.
本发明属于超高性能混凝土技术领域，公开了一种全再生细骨料超高性能混凝土，所述超高性能混凝土是由全再生细骨料、复合胶凝材料、钢纤维、水和减水剂组成；所述复合胶凝材料由硅酸盐水泥和辅助胶凝材料构成，其中硅酸盐水泥用量不小于复合胶凝材料质量的55%；所述水的用量为复合胶凝材料质量的18%；所述减水剂的用量为复合胶凝材料质量的0.5%；所述1m3单位体积的复合胶凝材料体积等于全再生细骨料紧密堆积下空隙所占体积；所述1m3单位体积的复合胶凝材料中钢纤维掺入的体积分数不超过6%。本发明利用全再生细骨料制备的超高性能混凝土性能优异，克服了难以利用全再生细骨料制备超高性能混凝土的问题，实现了再生细骨料的综合利用，便于推广使用。
Full-recycled fine aggregate ultra-high performance concrete and preparation method thereof
The invention belongs to the technical field of ultra-high performance concrete, and discloses full-recycled fine aggregate ultra-high performance concrete which is composed of full-recycled fine aggregate, a composite cementing material, steel fibers, water and a water reducing agent. The composite cementing material is composed of Portland cement and an auxiliary cementing material, wherein the use amount of the Portland cement is not less than 55% of the mass of the composite cementing material; the dosage of the water is 18% of the mass of the composite cementing material; the dosage of the water reducing agent is 0.5% of the mass of the composite cementing material; the volume of the composite cementitious material with the unit volume of 1m < 3 > is equal to the volume occupied by gaps under close packing of the fully-recycled fine aggregate; the volume fraction of the doped steel fibers in the composite cementing material with the unit volume of 1m < 3 > is not more than 6%. The ultra-high performance concrete prepared from the fully-recycled fine aggregate is excellent in performance, the problem that the ultra-high performance concrete is difficult to prepare from the fully-recycled fine aggregate is solved, comprehensive utilization of the recycled fine aggregate is achieved, and the method is convenient to popularize and use.
本发明属于超高性能混凝土技术领域，公开了一种全再生细骨料超高性能混凝土，所述超高性能混凝土是由全再生细骨料、复合胶凝材料、钢纤维、水和减水剂组成；所述复合胶凝材料由硅酸盐水泥和辅助胶凝材料构成，其中硅酸盐水泥用量不小于复合胶凝材料质量的55%；所述水的用量为复合胶凝材料质量的18%；所述减水剂的用量为复合胶凝材料质量的0.5%；所述1m3单位体积的复合胶凝材料体积等于全再生细骨料紧密堆积下空隙所占体积；所述1m3单位体积的复合胶凝材料中钢纤维掺入的体积分数不超过6%。本发明利用全再生细骨料制备的超高性能混凝土性能优异，克服了难以利用全再生细骨料制备超高性能混凝土的问题，实现了再生细骨料的综合利用，便于推广使用。
Full-recycled fine aggregate ultra-high performance concrete and preparation method thereof
一种全再生细骨料超高性能混凝土及其制备方法
GAO DANYING (author) / GUO YAJIANG (author) / TANG JIYU (author) / YANG LIN (author) / FANG DONG (author) / WEI DONG (author) / GU ZHIQIANG (author) / GUO AOFEI (author) / LI ZONGZE (author)
2024-01-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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