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A platform for research: civil engineering, architecture and urbanism
All-recycled fine aggregate ultra-high performance concrete mix proportion design method based on aggregate slurry wrapping thickness
The invention belongs to the technical field of ultra-high performance concrete proportion design, and discloses a full-recycled fine aggregate ultra-high performance concrete proportion design method based on aggregate slurry wrapping thickness, which comprises the following steps: measuring the apparent density and bulk density of the used full-recycled fine aggregate, and dividing the used full-recycled fine aggregate into a plurality of size fractions; calculating the content of the all-recycled fine aggregate used in each size fraction under the target gradation, and measuring the accumulation void ratio of the all-recycled fine aggregate used under the target gradation; determining the lowest slurry dosage to obtain the initial mix proportion of each raw material of the ultra-high performance concrete; calculating the total surface area of the fully-recycled fine aggregate used under the target gradation; adjusting the use amount of the slurry, and determining the final mix proportion of the raw materials of the ultra-high performance concrete. According to the method, the surface area of the fully-recycled fine aggregate is considered, the slurry dosage is adjusted on the basis of the initial mix proportion, the difference influence caused by different sources of the fully-recycled fine aggregate is avoided, and high-grade utilization of the fully-recycled fine aggregate is achieved.
本发明属于超高性能混凝土配比设计技术领域，公开了一种基于骨料裹浆厚度的全再生细骨料超高性能混凝土配合比设计方法，包括以下步骤：测定所用全再生细骨料的表观密度和堆积密度，并将所用全再生细骨料划分为多个粒级；计算目标级配下各粒级所用全再生细骨料的含量，并测定目标级配下所用全再生细骨料的堆积空隙率；确定最低浆体用量，得到超高性能混凝土各原料的初始配合比；计算目标级配下所用全再生细骨料的总表面积；调整浆体用量，确定超高性能混凝土各原料的最终配合比。本发明方法考虑了全再生细骨料的表面积，并依此在初始配合比基础上调整浆体用量，避免全再生细骨料因来源不同导致的差异性影响，实现全再生细骨料的高等级利用。
All-recycled fine aggregate ultra-high performance concrete mix proportion design method based on aggregate slurry wrapping thickness
The invention belongs to the technical field of ultra-high performance concrete proportion design, and discloses a full-recycled fine aggregate ultra-high performance concrete proportion design method based on aggregate slurry wrapping thickness, which comprises the following steps: measuring the apparent density and bulk density of the used full-recycled fine aggregate, and dividing the used full-recycled fine aggregate into a plurality of size fractions; calculating the content of the all-recycled fine aggregate used in each size fraction under the target gradation, and measuring the accumulation void ratio of the all-recycled fine aggregate used under the target gradation; determining the lowest slurry dosage to obtain the initial mix proportion of each raw material of the ultra-high performance concrete; calculating the total surface area of the fully-recycled fine aggregate used under the target gradation; adjusting the use amount of the slurry, and determining the final mix proportion of the raw materials of the ultra-high performance concrete. According to the method, the surface area of the fully-recycled fine aggregate is considered, the slurry dosage is adjusted on the basis of the initial mix proportion, the difference influence caused by different sources of the fully-recycled fine aggregate is avoided, and high-grade utilization of the fully-recycled fine aggregate is achieved.
本发明属于超高性能混凝土配比设计技术领域，公开了一种基于骨料裹浆厚度的全再生细骨料超高性能混凝土配合比设计方法，包括以下步骤：测定所用全再生细骨料的表观密度和堆积密度，并将所用全再生细骨料划分为多个粒级；计算目标级配下各粒级所用全再生细骨料的含量，并测定目标级配下所用全再生细骨料的堆积空隙率；确定最低浆体用量，得到超高性能混凝土各原料的初始配合比；计算目标级配下所用全再生细骨料的总表面积；调整浆体用量，确定超高性能混凝土各原料的最终配合比。本发明方法考虑了全再生细骨料的表面积，并依此在初始配合比基础上调整浆体用量，避免全再生细骨料因来源不同导致的差异性影响，实现全再生细骨料的高等级利用。
All-recycled fine aggregate ultra-high performance concrete mix proportion design method based on aggregate slurry wrapping thickness
基于骨料裹浆厚度的全再生细骨料超高性能混凝土配合比设计方法
GAO DANYING (author) / GUO YAJIANG (author) / TANG JIYU (author) / FENG HU (author) / CHENG ZHANQI (author) / FANG DONG (author) / PANG YUYANG (author) / DING CHONG (author) / LI ZONGZE (author)
2024-01-30
Patent
Electronic Resource
Chinese
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