A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High-fluidity low-heat-conductivity high-strength self-compacting lightweight concrete and preparation method thereof
Aiming at the problems of lightweight aggregate concrete in the prior art, the invention provides the self-compacting lightweight concrete with high fluidity, low heat-conducting property and high strength and the preparation method thereof. The self-compacting high-strength lightweight aggregate concrete is prepared from the following components in parts by weight: a cementing material, fine aggregate, coarse aggregate, 130 to 160 parts of water and 15 to 20 parts of a water reducing agent, the cementing material is prepared from the following components in parts by weight: 430 to 480 parts of cement, 65 to 95 parts of fly ash and 25 to 45 parts of silica fume; the fine aggregate is 720-780 parts by weight of fine sand, and the coarse aggregate is 460-490 parts by weight of Yunnan concrete stone. Wherein the proportion of the silica fume in the cementing material is 4-8 wt%, and the weight ratio of the fine aggregate to the coarse aggregate is (3.1-3.3): 2. According to the invention, the lightweight aggregate is used as the core aggregate, and the self-compacting lightweight aggregate concrete with high strength, high fluidity and good thermal insulation performance is obtained through mutual cooperation and synergistic effect of the cementing material, the water reducer and water.
针对现有技术中轻骨料混凝土所存在的问题，本发明提供了大流动度、低导热性能、高强度的自密实轻质混凝土及其制备方法。所述的自密实高强轻骨料混凝土，按重量份数计，由胶凝材料、细骨料、粗骨料、130‑160重量份水和15‑20重量份减水剂组成；所述胶凝材料由430‑480重量份水泥、65‑95重量份粉煤灰、25‑45重量份硅灰组成；所述细骨料为720‑780重量份细砂，所述粗骨料为460‑490重量份云砼石。其中，所述硅灰在胶凝材料中的比例为4‑8 wt%，所述细骨料和粗骨料的重量比为（3.1‑3.3）:2。本发明以轻骨料作为核心骨料，胶凝材料、减水剂和水之间相互配合，协同作用得到具备高强度、大流动性且保温性能佳的自密实轻骨料混凝土。
High-fluidity low-heat-conductivity high-strength self-compacting lightweight concrete and preparation method thereof
Aiming at the problems of lightweight aggregate concrete in the prior art, the invention provides the self-compacting lightweight concrete with high fluidity, low heat-conducting property and high strength and the preparation method thereof. The self-compacting high-strength lightweight aggregate concrete is prepared from the following components in parts by weight: a cementing material, fine aggregate, coarse aggregate, 130 to 160 parts of water and 15 to 20 parts of a water reducing agent, the cementing material is prepared from the following components in parts by weight: 430 to 480 parts of cement, 65 to 95 parts of fly ash and 25 to 45 parts of silica fume; the fine aggregate is 720-780 parts by weight of fine sand, and the coarse aggregate is 460-490 parts by weight of Yunnan concrete stone. Wherein the proportion of the silica fume in the cementing material is 4-8 wt%, and the weight ratio of the fine aggregate to the coarse aggregate is (3.1-3.3): 2. According to the invention, the lightweight aggregate is used as the core aggregate, and the self-compacting lightweight aggregate concrete with high strength, high fluidity and good thermal insulation performance is obtained through mutual cooperation and synergistic effect of the cementing material, the water reducer and water.
针对现有技术中轻骨料混凝土所存在的问题，本发明提供了大流动度、低导热性能、高强度的自密实轻质混凝土及其制备方法。所述的自密实高强轻骨料混凝土，按重量份数计，由胶凝材料、细骨料、粗骨料、130‑160重量份水和15‑20重量份减水剂组成；所述胶凝材料由430‑480重量份水泥、65‑95重量份粉煤灰、25‑45重量份硅灰组成；所述细骨料为720‑780重量份细砂，所述粗骨料为460‑490重量份云砼石。其中，所述硅灰在胶凝材料中的比例为4‑8 wt%，所述细骨料和粗骨料的重量比为（3.1‑3.3）:2。本发明以轻骨料作为核心骨料，胶凝材料、减水剂和水之间相互配合，协同作用得到具备高强度、大流动性且保温性能佳的自密实轻骨料混凝土。
High-fluidity low-heat-conductivity high-strength self-compacting lightweight concrete and preparation method thereof
一种大流动度、低导热的高强度自密实轻质混凝土及制备方法
BAO JIUWEN (author) / WANG WENTAO (author) / ZHENG RUI (author) / ZHANG PENG (author) / QIN LING (author) / SONG QIANG (author) / MA YANXUAN (author) / GUO WEINA (author)
2023-04-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
High-fluidity lightweight high-strength concrete and preparation method thereof
| European Patent Office | 2021
| British Library Online Contents | 2006