Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Recycled concrete based on waste concrete and preparation method thereof
The invention provides recycled concrete based on waste concrete. The recycled concrete is prepared from the following raw materials in parts by weight: 30-40 parts of modified waste concrete, 30-40 parts of cement, 20-30 parts of aggregate, 3-5 parts of a water reducing agent and 3-5 parts of a coupling agent, the preparation method of the modified waste concrete comprises the following steps: S1, pretreating the waste concrete, S2, acidifying the waste concrete, and S3, modifying the waste concrete. The waste concrete is modified by utilizing the cerium dioxide nanoparticles, and the ceriumdioxide nanoparticles are bonded on the waste concrete, so that the dispersity of the waste concrete in a concrete system is improved by changing the microstructure of the concrete microscopically, and the mechanical property of the concrete is further improved. In addition, the invention also provides a method for preparing the recycled concrete.
本发明提供一种基于废弃混凝土的再生混凝土，由以下重量份数的原料组成：30—40份改性废弃混凝土，30—40份水泥，20—30份骨料，3—5份减水剂，以及3—5份偶联剂；所述改性废弃混凝土的制备方法如下：S1废弃混凝土的预处理；S2废弃混凝土的酸化；S3废弃混凝土的改性；该混凝土利用二氧化铈纳米粒子对废弃混凝土进行改性，将二氧化铈纳米粒子键合在废弃混凝土上，从而从微观上通过改变混凝土的微观结构，进而提高废弃混凝土在混凝土体系中的分散性，进而提交混凝土的力学性能；另外，本发明还提供了制备该再生混凝土的方法。
Recycled concrete based on waste concrete and preparation method thereof
The invention provides recycled concrete based on waste concrete. The recycled concrete is prepared from the following raw materials in parts by weight: 30-40 parts of modified waste concrete, 30-40 parts of cement, 20-30 parts of aggregate, 3-5 parts of a water reducing agent and 3-5 parts of a coupling agent, the preparation method of the modified waste concrete comprises the following steps: S1, pretreating the waste concrete, S2, acidifying the waste concrete, and S3, modifying the waste concrete. The waste concrete is modified by utilizing the cerium dioxide nanoparticles, and the ceriumdioxide nanoparticles are bonded on the waste concrete, so that the dispersity of the waste concrete in a concrete system is improved by changing the microstructure of the concrete microscopically, and the mechanical property of the concrete is further improved. In addition, the invention also provides a method for preparing the recycled concrete.
本发明提供一种基于废弃混凝土的再生混凝土，由以下重量份数的原料组成：30—40份改性废弃混凝土，30—40份水泥，20—30份骨料，3—5份减水剂，以及3—5份偶联剂；所述改性废弃混凝土的制备方法如下：S1废弃混凝土的预处理；S2废弃混凝土的酸化；S3废弃混凝土的改性；该混凝土利用二氧化铈纳米粒子对废弃混凝土进行改性，将二氧化铈纳米粒子键合在废弃混凝土上，从而从微观上通过改变混凝土的微观结构，进而提高废弃混凝土在混凝土体系中的分散性，进而提交混凝土的力学性能；另外，本发明还提供了制备该再生混凝土的方法。
Recycled concrete based on waste concrete and preparation method thereof
一种基于废弃混凝土的再生混凝土及其制备方法
ZHANG BIN (Autor:in) / ZHANG YANJUN (Autor:in)
05.06.2020
Patent
Elektronische Ressource
Chinesisch
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