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Lightweight high-strength concrete and preparation method thereof
The invention discloses lightweight high-strength concrete and a preparation method thereof. The lightweight high-strength concrete comprises 550-650 parts of cement, 50 to 150 parts of a high-activity spherical silica-alumina material, 250 to 350 kg/m<3> of a low-activity alkaline calcareous material, 100 to 150 kg/m<3> of a light spherical fine material, 100 to 120 kg/m<3> of a light fine aggregate, 350 to 450 kg/m<3> of a light spherical coarse aggregate, 135 to 150 kg/m<3> of water, 20 to 30 kg/m<3> of an additive and 50 to 100 kg/m<3> of high-toughness fibers. According to the prepared lightweight aggregate concrete, due to matching of the cementing material and adding of the high-toughness fibers, the 28d compressive strength is 70 MPa or above, meanwhile, due to the ball effect of the cementing material and blending of the additive, the concrete is good in fluidity and the expansion degree ranges from 640 mm to 680 mm. The steel fiber is added into the lightweight aggregate high-strength concrete, so that the concrete is good in toughness, not easy to shrink and good in durability.
本发明公开了一种轻质高强混凝土及其制备方法，该混凝土各组分的单方用量为：水泥550‑650、高活性球体硅铝质材料50‑150、低活性碱性钙质材料250‑350、轻质球体微细材料100‑150、轻质细集料100‑120、轻质球体粗骨料350‑450、水135‑150、外加剂20‑30、高韧性纤维50‑100，单位均为kg/m。本发明制备的轻骨料混凝土由于胶凝材料的搭配和高韧性纤维的加入，使得28d抗压强度在70MPa以上，同时由于胶凝材料的“滚珠效应”和外加剂的调配，使得混凝土流动性好，扩展度在640‑680mm。本发明的轻骨料高强混凝土中加入了钢纤维，混凝土韧性好、不易收缩，耐久性好。
Lightweight high-strength concrete and preparation method thereof
The invention discloses lightweight high-strength concrete and a preparation method thereof. The lightweight high-strength concrete comprises 550-650 parts of cement, 50 to 150 parts of a high-activity spherical silica-alumina material, 250 to 350 kg/m<3> of a low-activity alkaline calcareous material, 100 to 150 kg/m<3> of a light spherical fine material, 100 to 120 kg/m<3> of a light fine aggregate, 350 to 450 kg/m<3> of a light spherical coarse aggregate, 135 to 150 kg/m<3> of water, 20 to 30 kg/m<3> of an additive and 50 to 100 kg/m<3> of high-toughness fibers. According to the prepared lightweight aggregate concrete, due to matching of the cementing material and adding of the high-toughness fibers, the 28d compressive strength is 70 MPa or above, meanwhile, due to the ball effect of the cementing material and blending of the additive, the concrete is good in fluidity and the expansion degree ranges from 640 mm to 680 mm. The steel fiber is added into the lightweight aggregate high-strength concrete, so that the concrete is good in toughness, not easy to shrink and good in durability.
本发明公开了一种轻质高强混凝土及其制备方法，该混凝土各组分的单方用量为：水泥550‑650、高活性球体硅铝质材料50‑150、低活性碱性钙质材料250‑350、轻质球体微细材料100‑150、轻质细集料100‑120、轻质球体粗骨料350‑450、水135‑150、外加剂20‑30、高韧性纤维50‑100，单位均为kg/m。本发明制备的轻骨料混凝土由于胶凝材料的搭配和高韧性纤维的加入，使得28d抗压强度在70MPa以上，同时由于胶凝材料的“滚珠效应”和外加剂的调配，使得混凝土流动性好，扩展度在640‑680mm。本发明的轻骨料高强混凝土中加入了钢纤维，混凝土韧性好、不易收缩，耐久性好。
Lightweight high-strength concrete and preparation method thereof
一种轻质高强混凝土及其制备方法
YE HONGHONG (author) / LIN XIHUA (author) / BAN LUJIANG (author) / HE KAI (author) / LU DONGYI (author) / ZHAO SHIHAO (author) / YANG GUANGLIN (author) / LI JIANG (author)
2020-06-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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