A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Composite retarding material and preparation method thereof
The invention relates to a composite retarding material. The composite retarding material comprises the following components in percentage by mass: 20-80% of a monosaccharide retarding material; 0-60%of a polysaccharide retarding material; 0-52% of an inorganic acid retarding material; and 0-14% of an organic acid retarding material. The composite retarding material disclosed by the invention isnot limited by a water-binder ratio and free of the influence of concrete admixture. After concrete is added, the initial setting time of the concrete can be controlled to be freely selected between 60h and 90h, the final setting time can be controlled between 70h and 100h, the phenomenon of concrete false setting caused by monosaccharide retarders is avoided, the situation that concrete slump loss is too fast due to polysaccharide retarders is avoided, the problem that inorganic acid retarders are short in setting time is solved, and later strength increase of concrete is not affected. The invention also relates to a preparation method of the composite retarding material. The preparation method comprises the step of uniformly mixing the monosaccharide retarding material, the polysaccharide retarding material, the inorganic acid retarding material and the organic acid retarding material according to a solid mass ratio to prepare powder.
本发明涉及一种复合缓凝材料，以质量百分比计包括以下组分：单糖类缓凝材料20‑80％；多糖类缓凝材料0‑60％；无机酸类缓凝材料0‑52％；有机酸类缓凝材料0‑14％。本发明的复合缓凝材料实现了不受水胶比限制，不受混凝土外掺料影响，在添加入混凝土后，可以控制混凝土初凝时间在60h到90h间自由选择，终凝时间控制在70h到100h之间，不出现单糖缓凝剂造成混凝土假凝现象，不发生多糖缓凝剂造成混凝土坍落度损失过快的情况，克服了无机酸类缓凝剂缓凝时间短的问题，不影响混凝土后期强度增长。本发明还涉及所述的复合缓凝材料的制备方法：将单糖类缓凝材料、多糖类缓凝材料、无机酸类缓凝材料及有机酸类缓凝材料按照固体质量比例混合均匀，制成粉剂。
Composite retarding material and preparation method thereof
The invention relates to a composite retarding material. The composite retarding material comprises the following components in percentage by mass: 20-80% of a monosaccharide retarding material; 0-60%of a polysaccharide retarding material; 0-52% of an inorganic acid retarding material; and 0-14% of an organic acid retarding material. The composite retarding material disclosed by the invention isnot limited by a water-binder ratio and free of the influence of concrete admixture. After concrete is added, the initial setting time of the concrete can be controlled to be freely selected between 60h and 90h, the final setting time can be controlled between 70h and 100h, the phenomenon of concrete false setting caused by monosaccharide retarders is avoided, the situation that concrete slump loss is too fast due to polysaccharide retarders is avoided, the problem that inorganic acid retarders are short in setting time is solved, and later strength increase of concrete is not affected. The invention also relates to a preparation method of the composite retarding material. The preparation method comprises the step of uniformly mixing the monosaccharide retarding material, the polysaccharide retarding material, the inorganic acid retarding material and the organic acid retarding material according to a solid mass ratio to prepare powder.
本发明涉及一种复合缓凝材料，以质量百分比计包括以下组分：单糖类缓凝材料20‑80％；多糖类缓凝材料0‑60％；无机酸类缓凝材料0‑52％；有机酸类缓凝材料0‑14％。本发明的复合缓凝材料实现了不受水胶比限制，不受混凝土外掺料影响，在添加入混凝土后，可以控制混凝土初凝时间在60h到90h间自由选择，终凝时间控制在70h到100h之间，不出现单糖缓凝剂造成混凝土假凝现象，不发生多糖缓凝剂造成混凝土坍落度损失过快的情况，克服了无机酸类缓凝剂缓凝时间短的问题，不影响混凝土后期强度增长。本发明还涉及所述的复合缓凝材料的制备方法：将单糖类缓凝材料、多糖类缓凝材料、无机酸类缓凝材料及有机酸类缓凝材料按照固体质量比例混合均匀，制成粉剂。
Composite retarding material and preparation method thereof
一种复合缓凝材料及其制备方法
LI RUIQING (author) / ZHU YONGQING (author) / CHEN YUELONG (author) / ZOU LIN (author) / ZHENG BIN (author) / YANG YANG (author) / TIAN KUN (author)
2020-10-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Strong retarding cementing material and preparation method thereof
| European Patent Office | 2024
Retarding type low-carbon magnesium phosphate composite material and preparation method thereof
| European Patent Office | 2024
| European Patent Office | 2024
Composite retarding and water reducing agent and preparation method thereof
| European Patent Office | 2020