A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Early-strength low-shrinkage concrete for prefabricated parts and preparation process of early-strength low-shrinkage concrete
The invention discloses early-strength low-shrinkage concrete for a prefabricated part and a preparation process of the early-strength low-shrinkage concrete. The concrete is prepared from the following raw materials in parts by weight: 400-500 parts of ordinary Portland cement; 1,000-1,200 parts of coarse aggregate; 500-600 parts of fine aggregate; 100 to 200 parts of biomass incineration ash residue; 6-10 parts of a low slump type water reducing agent; 4-8 parts of an early strength concrete water reducing agent; 5-10 parts of a low-slump concrete polymer; 5-10 parts of a viscosity reduction type concrete polymer; and 200-230 parts of water. The low-slump viscosity-reducing polymer and the low-slump water reducing agent are added to ensure the workability of fresh concrete, the early strength concrete water reducing agent is added to ensure the early strength, and the biomass incineration ash is used as an internal curing material to reduce the shrinkage of prefabricated part concrete.
本发明公开了一种预制构件用早强低收缩混凝土及其制备工艺，混凝土制备的原料以重量份计为：普通硅酸盐水泥400‑500份；粗集料1000‑1200份；细集料500‑600份；生物质焚烧灰渣100‑200份；低坍落度型减水剂6‑10份；早强型混凝土减水剂4‑8份；低坍落度混凝土聚合物5‑10份；降粘型混凝土聚合物5‑10份；水200‑230份。本发明通过加入低坍落度及降粘型聚合物、低坍落度型减水剂保证新拌混凝土的和易性，通过加入早强型混凝土减水剂保证早期强度，以生物质焚烧灰作为内养护材料降低预制构件混凝土的收缩。
Early-strength low-shrinkage concrete for prefabricated parts and preparation process of early-strength low-shrinkage concrete
The invention discloses early-strength low-shrinkage concrete for a prefabricated part and a preparation process of the early-strength low-shrinkage concrete. The concrete is prepared from the following raw materials in parts by weight: 400-500 parts of ordinary Portland cement; 1,000-1,200 parts of coarse aggregate; 500-600 parts of fine aggregate; 100 to 200 parts of biomass incineration ash residue; 6-10 parts of a low slump type water reducing agent; 4-8 parts of an early strength concrete water reducing agent; 5-10 parts of a low-slump concrete polymer; 5-10 parts of a viscosity reduction type concrete polymer; and 200-230 parts of water. The low-slump viscosity-reducing polymer and the low-slump water reducing agent are added to ensure the workability of fresh concrete, the early strength concrete water reducing agent is added to ensure the early strength, and the biomass incineration ash is used as an internal curing material to reduce the shrinkage of prefabricated part concrete.
本发明公开了一种预制构件用早强低收缩混凝土及其制备工艺，混凝土制备的原料以重量份计为：普通硅酸盐水泥400‑500份；粗集料1000‑1200份；细集料500‑600份；生物质焚烧灰渣100‑200份；低坍落度型减水剂6‑10份；早强型混凝土减水剂4‑8份；低坍落度混凝土聚合物5‑10份；降粘型混凝土聚合物5‑10份；水200‑230份。本发明通过加入低坍落度及降粘型聚合物、低坍落度型减水剂保证新拌混凝土的和易性，通过加入早强型混凝土减水剂保证早期强度，以生物质焚烧灰作为内养护材料降低预制构件混凝土的收缩。
Early-strength low-shrinkage concrete for prefabricated parts and preparation process of early-strength low-shrinkage concrete
一种预制构件用早强低收缩混凝土及其制备工艺
LI XIANGGUO (author) / ZHANG CHENGLONG (author) / JIAN SHOUWEI (author) / LYU YANG (author) / KE KAI (author) / XU JINSHENG (author)
2021-05-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Low-shrinkage concrete for prefabricated parts and preparation method of low-shrinkage concrete
| European Patent Office | 2023
Early-strength low-shrinkage concrete and preparation method thereof
| European Patent Office | 2021
Early-age shrinkage control and strength development of concrete
| British Library Conference Proceedings | 2006