Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Light and high-specific-strength foam concrete and preparation method thereof
The invention relates to light and high-specific-strength foam concrete and a preparation method thereof, and belongs to the technical field of concrete preparation. The light and high-specific-strength foam concrete is prepared from the following components in parts by mass: 220 to 280 parts of cement, 11 to 14 parts of silica fume, 22 to 28 parts of fly ash, 4.5 to 7.8 parts of a physical foaming agent, 2.2 to 5.6 parts of fibers, 0.2 to 0.5 part of a foam stabilizer, 0.2 to 1.5 parts of a water repellent and 110 to 140 parts of water. The dry density of the lightweight and high-specific-strength foam concrete prepared according to the proportion in the invention is 1t; the compressive strength is greater than or equal to 5.0 MPa. The stability of bubbles is improved by controlling the dilution ratio and the foaming rate of the foaming agent, so that internal pores of the foam concrete are more uniform; the strength of the foam concrete is enhanced by adopting fibers, silica fume and fly ash. In addition, the situation that the actual water-binder ratio is larger than the designed water-binder ratio due to neglect of the water content in the foam in the experiment process is improved, and the density control of the foam is more accurate.
本发明涉及一种轻质、高比强泡沫混凝土及其制备方法，属于混凝土制备技术领域。所述轻质、高比强泡沫混凝土按质量份数计，由以下组分组成：水泥220‑280份、硅灰11‑14份、粉煤灰22‑28份、物理发泡剂4.5‑7.8份、纤维2.2‑5.6，稳泡剂0.2‑0.5份、憎水剂0.2‑1.5份、水110‑140份。按照本发明中配比制备的轻质、高比强泡沫混凝土的干密度<700kg/m3，抗压强度≥5.0MPa。本发明中通过控制发泡剂稀释比例以及发泡速率来提高气泡的稳定性，使得泡沫混凝土内部孔隙更均匀；采用纤维、硅灰和粉煤灰增强泡沫混凝土的强度。此外，本发明改善了实验过程中因忽视泡沫中含水量造成的实际水胶比大于设计水胶比的情况，使得对其密度控制更加精准。
Light and high-specific-strength foam concrete and preparation method thereof
The invention relates to light and high-specific-strength foam concrete and a preparation method thereof, and belongs to the technical field of concrete preparation. The light and high-specific-strength foam concrete is prepared from the following components in parts by mass: 220 to 280 parts of cement, 11 to 14 parts of silica fume, 22 to 28 parts of fly ash, 4.5 to 7.8 parts of a physical foaming agent, 2.2 to 5.6 parts of fibers, 0.2 to 0.5 part of a foam stabilizer, 0.2 to 1.5 parts of a water repellent and 110 to 140 parts of water. The dry density of the lightweight and high-specific-strength foam concrete prepared according to the proportion in the invention is 1t; the compressive strength is greater than or equal to 5.0 MPa. The stability of bubbles is improved by controlling the dilution ratio and the foaming rate of the foaming agent, so that internal pores of the foam concrete are more uniform; the strength of the foam concrete is enhanced by adopting fibers, silica fume and fly ash. In addition, the situation that the actual water-binder ratio is larger than the designed water-binder ratio due to neglect of the water content in the foam in the experiment process is improved, and the density control of the foam is more accurate.
本发明涉及一种轻质、高比强泡沫混凝土及其制备方法，属于混凝土制备技术领域。所述轻质、高比强泡沫混凝土按质量份数计，由以下组分组成：水泥220‑280份、硅灰11‑14份、粉煤灰22‑28份、物理发泡剂4.5‑7.8份、纤维2.2‑5.6，稳泡剂0.2‑0.5份、憎水剂0.2‑1.5份、水110‑140份。按照本发明中配比制备的轻质、高比强泡沫混凝土的干密度<700kg/m3，抗压强度≥5.0MPa。本发明中通过控制发泡剂稀释比例以及发泡速率来提高气泡的稳定性，使得泡沫混凝土内部孔隙更均匀；采用纤维、硅灰和粉煤灰增强泡沫混凝土的强度。此外，本发明改善了实验过程中因忽视泡沫中含水量造成的实际水胶比大于设计水胶比的情况，使得对其密度控制更加精准。
Light and high-specific-strength foam concrete and preparation method thereof
一种轻质、高比强泡沫混凝土及其制备方法
YANG YONGGAN (Autor:in) / KANG ZIHAO (Autor:in) / LIU HAOTIAN (Autor:in) / HUA JIAN (Autor:in) / ZHU YUFENG (Autor:in) / LIU WANGHAN (Autor:in) / GONG QINGYU (Autor:in)
29.07.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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