Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing high-performance concrete by using construction waste recycled aggregate
The invention provides a method for preparing high-performance concrete by using construction waste recycled aggregate, which comprises the following steps: S1, preparation of recycled coarse aggregate: taking waste concrete blocks, crushing into old concrete particles, and screening; treating the carbon nano tube with chitosan to obtain a modified carbon nano tube; adding the modified carbon nano tube and methoxypropyltrimethoxysilane into the old concrete particles together, uniformly stirring, and drying, so as to obtain recycled coarse aggregate; s2, preparing a powder material: mixing the recycled coarse aggregate prepared in the step S1 with the fine aggregate to prepare the powder material; s3, concrete preparation: treating palm fibers with chitosan to obtain modified palm fibers; s2, taking water, adding a water reducing agent, cement, slag powder, palm ash, methoxypropyltrimethoxysilane and modified palm fibers, then adding the powder prepared in the step S2, and uniformly stirring to prepare the concrete. According to the method disclosed by the invention, the compressive property, the splitting tensile property and the antibacterial property of the concrete can be remarkably improved.
本发明提供一种利用建筑废弃物再生骨料制备高性能混凝土的方法，包括：S1、再生粗骨料的制备：取废弃混凝土块，粉碎成旧混凝土颗粒，筛分；用壳聚糖处理碳纳米管，得改性碳纳米管；将改性碳纳米管和甲氧基丙基三甲氧基硅烷一起加入旧混凝土颗粒中，搅拌均匀，干燥，制得再生粗骨料；S2、粉料的制备：步骤S1制得的再生粗骨料和细骨料混合，制得粉料；S3、混凝土制备：用壳聚糖处理棕榈纤维，得改性棕榈纤维；取水，加入减水剂、水泥、矿渣粉、棕榈灰、甲氧基丙基三甲氧基硅烷和改性棕榈纤维，再加入步骤S2制得的粉料，搅拌均匀，制得混凝土。本发明的方法可以显著提高混凝土的抗压性能、劈裂抗拉性能和抗菌性能。
Method for preparing high-performance concrete by using construction waste recycled aggregate
The invention provides a method for preparing high-performance concrete by using construction waste recycled aggregate, which comprises the following steps: S1, preparation of recycled coarse aggregate: taking waste concrete blocks, crushing into old concrete particles, and screening; treating the carbon nano tube with chitosan to obtain a modified carbon nano tube; adding the modified carbon nano tube and methoxypropyltrimethoxysilane into the old concrete particles together, uniformly stirring, and drying, so as to obtain recycled coarse aggregate; s2, preparing a powder material: mixing the recycled coarse aggregate prepared in the step S1 with the fine aggregate to prepare the powder material; s3, concrete preparation: treating palm fibers with chitosan to obtain modified palm fibers; s2, taking water, adding a water reducing agent, cement, slag powder, palm ash, methoxypropyltrimethoxysilane and modified palm fibers, then adding the powder prepared in the step S2, and uniformly stirring to prepare the concrete. According to the method disclosed by the invention, the compressive property, the splitting tensile property and the antibacterial property of the concrete can be remarkably improved.
本发明提供一种利用建筑废弃物再生骨料制备高性能混凝土的方法，包括：S1、再生粗骨料的制备：取废弃混凝土块，粉碎成旧混凝土颗粒，筛分；用壳聚糖处理碳纳米管，得改性碳纳米管；将改性碳纳米管和甲氧基丙基三甲氧基硅烷一起加入旧混凝土颗粒中，搅拌均匀，干燥，制得再生粗骨料；S2、粉料的制备：步骤S1制得的再生粗骨料和细骨料混合，制得粉料；S3、混凝土制备：用壳聚糖处理棕榈纤维，得改性棕榈纤维；取水，加入减水剂、水泥、矿渣粉、棕榈灰、甲氧基丙基三甲氧基硅烷和改性棕榈纤维，再加入步骤S2制得的粉料，搅拌均匀，制得混凝土。本发明的方法可以显著提高混凝土的抗压性能、劈裂抗拉性能和抗菌性能。
Method for preparing high-performance concrete by using construction waste recycled aggregate
一种利用建筑废弃物再生骨料制备高性能混凝土的方法
WANG DENGKE (Autor:in) / CHEN JIQIN (Autor:in) / SONG XINLE (Autor:in) / MA LONG (Autor:in) / SUN HONGGAN (Autor:in) / CHEN JINWANG (Autor:in) / CHEN XIANZHUANG (Autor:in) / LIANG ER (Autor:in) / CHEN CHANGZE (Autor:in) / ZENG ZUYOU (Autor:in)
08.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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