Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Recycled aggregate concrete and preparation method thereof
The invention provides recycled aggregate concrete and a preparation method thereof. The recycled aggregate concrete is prepared from the following components in parts by weight: 280 to 300 parts of cement, 160 to 180 parts of water, 120 to 170 parts of fly ash, 140 to 200 parts of modified rubber, 120 to 160 parts of construction waste, 30 to 45 parts of water reducing agent and 20 to 30 parts of mineral admixture. The cement, the fly ash, the modified rubber, the construction waste, the water reducing agent, the water and the mineral admixture in a scientific ratio are selected, and the obtained recycled aggregate concrete has the breaking strength of 3.36-3.57 MPa and the splitting strength of 1.96-2.40 MPa at the 28d age, so that the breaking strength and the splitting strength are excellent, the toughness and the deformation performance are good, and after 100 times of freezing and thawing circulation, the strength of the recycled aggregate concrete is greatly improved. The mass loss rate of the test piece does not exceed 5%, the damage standard is reached, the anti-freezing performance is good, and the requirements are met.
本发明提出了一种再生骨料混凝土及其制备方法，包括以下重量份的组分：水泥280‑300份、水160‑180份、粉煤灰120‑170份、改性橡胶140‑200份、建筑垃圾120‑160份、减水剂30‑45份和矿物掺合料20‑30份。本发明选用科学配比的水泥、粉煤灰、改性橡胶、建筑垃圾、减水剂、水和矿物掺合料，获得的再生骨料混凝土在28d龄期的抗折强度为3.36‑3.57MPa和劈裂强度为1.96‑2.40MPa，表明其抗折强度和劈裂强度优良，其韧性和变形性能良好，在冻融100次循环后，试件的质量损失率未超过5％，达到破坏标准，抗冻性能良好，符合要求。
Recycled aggregate concrete and preparation method thereof
The invention provides recycled aggregate concrete and a preparation method thereof. The recycled aggregate concrete is prepared from the following components in parts by weight: 280 to 300 parts of cement, 160 to 180 parts of water, 120 to 170 parts of fly ash, 140 to 200 parts of modified rubber, 120 to 160 parts of construction waste, 30 to 45 parts of water reducing agent and 20 to 30 parts of mineral admixture. The cement, the fly ash, the modified rubber, the construction waste, the water reducing agent, the water and the mineral admixture in a scientific ratio are selected, and the obtained recycled aggregate concrete has the breaking strength of 3.36-3.57 MPa and the splitting strength of 1.96-2.40 MPa at the 28d age, so that the breaking strength and the splitting strength are excellent, the toughness and the deformation performance are good, and after 100 times of freezing and thawing circulation, the strength of the recycled aggregate concrete is greatly improved. The mass loss rate of the test piece does not exceed 5%, the damage standard is reached, the anti-freezing performance is good, and the requirements are met.
本发明提出了一种再生骨料混凝土及其制备方法，包括以下重量份的组分：水泥280‑300份、水160‑180份、粉煤灰120‑170份、改性橡胶140‑200份、建筑垃圾120‑160份、减水剂30‑45份和矿物掺合料20‑30份。本发明选用科学配比的水泥、粉煤灰、改性橡胶、建筑垃圾、减水剂、水和矿物掺合料，获得的再生骨料混凝土在28d龄期的抗折强度为3.36‑3.57MPa和劈裂强度为1.96‑2.40MPa，表明其抗折强度和劈裂强度优良，其韧性和变形性能良好，在冻融100次循环后，试件的质量损失率未超过5％，达到破坏标准，抗冻性能良好，符合要求。
Recycled aggregate concrete and preparation method thereof
一种再生骨料混凝土及其制备方法
ZENG YIZHUO (Autor:in) / LIN HUI (Autor:in) / SHENG SHOUSHAN (Autor:in) / WANG DENGKE (Autor:in) / MA LONG (Autor:in)
03.10.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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