Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Polyacrylate modified recycled concrete and preparation method thereof
The invention relates to the field of civil engineering, and discloses polyacrylate modified recycled concrete and a preparation method thereof. 350 to 500 parts of cement; 500 to 800 parts of fine aggregate; 300-500 parts of recycled coarse aggregate with the particle size of 5-10 mm; 500-800 parts of recycled coarse aggregate with the particle size of 10-20 mm; 35 to 55 parts of polyacrylate emulsion; 1-5 parts of polyacrylonitrile fiber; 1-5 parts of a high-performance water reducing agent; and 1-3 parts of a defoaming agent. Treating the recycled aggregate; soaking the recycled aggregate for later use; mixing the mixing water, the polyacrylate emulsion and the organic silicon defoaming agent; mixing the polyacrylonitrile fiber, the sand and the cement in proportion; draining the recycled aggregate; the cement and the mixed liquid are put into a stirrer according to the proportion, stirring and shutdown are carried out, the recycled coarse aggregate is put into the stirrer, stirring and shutdown are carried out, the mixed dry material is put into the stirrer, stirring and shutdown are carried out, the water reducing agent and the mixed liquid are put into the stirrer, stirring and shutdown are carried out, and discharging is carried out. The relative dynamic elastic modulus loss rate, the mass loss rate, the compressive strength loss rate and the breaking strength loss rate of the concrete are superior to those of common natural aggregate concrete and common recycled aggregate concrete.
本发明涉及土木工程领域，公开一种聚丙烯酸酯改性再生混凝土及其制备方法，拌合水170‑200份；水泥350‑500份；细骨料500‑800份；粒径5‑10mm的再生粗骨料300‑500份；粒径10‑20mm的再生粗骨料500‑800份；聚丙烯酸酯乳液35‑55份；聚丙烯腈纤维1‑5份；高性能减水剂1‑5份；消泡剂1‑3份。再生骨料处理；再生骨料保持浸泡备用；将拌合水、聚丙烯酸酯乳液与有机硅消泡剂混合；按比例将聚丙烯腈纤维、砂与水泥混合；再生骨料沥水；所述比例水泥、混合液投入搅拌机，搅拌，停机，投入再生粗骨料，搅拌，停机，投入混合干料，搅拌，停机，投入减水剂与混合液，搅拌，停机，出料。本发明相对动弹性模量损失率、质量损失率、抗压强度损失率及抗折强度损失率优于普通天然骨料混凝土及普通再生骨料混凝土。
Polyacrylate modified recycled concrete and preparation method thereof
The invention relates to the field of civil engineering, and discloses polyacrylate modified recycled concrete and a preparation method thereof. 350 to 500 parts of cement; 500 to 800 parts of fine aggregate; 300-500 parts of recycled coarse aggregate with the particle size of 5-10 mm; 500-800 parts of recycled coarse aggregate with the particle size of 10-20 mm; 35 to 55 parts of polyacrylate emulsion; 1-5 parts of polyacrylonitrile fiber; 1-5 parts of a high-performance water reducing agent; and 1-3 parts of a defoaming agent. Treating the recycled aggregate; soaking the recycled aggregate for later use; mixing the mixing water, the polyacrylate emulsion and the organic silicon defoaming agent; mixing the polyacrylonitrile fiber, the sand and the cement in proportion; draining the recycled aggregate; the cement and the mixed liquid are put into a stirrer according to the proportion, stirring and shutdown are carried out, the recycled coarse aggregate is put into the stirrer, stirring and shutdown are carried out, the mixed dry material is put into the stirrer, stirring and shutdown are carried out, the water reducing agent and the mixed liquid are put into the stirrer, stirring and shutdown are carried out, and discharging is carried out. The relative dynamic elastic modulus loss rate, the mass loss rate, the compressive strength loss rate and the breaking strength loss rate of the concrete are superior to those of common natural aggregate concrete and common recycled aggregate concrete.
本发明涉及土木工程领域，公开一种聚丙烯酸酯改性再生混凝土及其制备方法，拌合水170‑200份；水泥350‑500份；细骨料500‑800份；粒径5‑10mm的再生粗骨料300‑500份；粒径10‑20mm的再生粗骨料500‑800份；聚丙烯酸酯乳液35‑55份；聚丙烯腈纤维1‑5份；高性能减水剂1‑5份；消泡剂1‑3份。再生骨料处理；再生骨料保持浸泡备用；将拌合水、聚丙烯酸酯乳液与有机硅消泡剂混合；按比例将聚丙烯腈纤维、砂与水泥混合；再生骨料沥水；所述比例水泥、混合液投入搅拌机，搅拌，停机，投入再生粗骨料，搅拌，停机，投入混合干料，搅拌，停机，投入减水剂与混合液，搅拌，停机，出料。本发明相对动弹性模量损失率、质量损失率、抗压强度损失率及抗折强度损失率优于普通天然骨料混凝土及普通再生骨料混凝土。
Polyacrylate modified recycled concrete and preparation method thereof
聚丙烯酸酯改性再生混凝土及其制备方法
CHEN CHENG (Autor:in) / CUI JIANSHENG (Autor:in) / LIANG XIAOHUI (Autor:in) / ZHAI XIAOYONG (Autor:in) / WU JI (Autor:in) / WANG WEI (Autor:in)
23.06.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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