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Concrete additive with water reducing and retarding functions and concrete prepared from concrete additive
The invention discloses a concrete additive with water reducing and retarding functions and concrete prepared from the concrete additive, and belongs to the field of concrete admixtures, the additive is prepared from a water reducing agent, a retarder and a hydrophilic colloid according to the mass ratio of 1: 1: (1-5); the water reducing agent is a mixed component of a naphthalene sulfonate formaldehyde condensate and polycarboxylic acid, and the naphthalene sulfonate formaldehyde condensate and the polycarboxylic acid are mixed according to the mass percent of 2: 1; the hydrophilic colloid is modified agar; the additive prepared by the invention can effectively improve the overall water-reducing rate of concrete, so that the water-reducing rate can reach 38%; meanwhile, the setting time of the concrete is also prolonged, the flowability of the concrete is ensured, and the problem of difficult transportation caused by rapid setting after concrete production is avoided.
本发明公开了一种具有减水缓凝功能的混凝土添加剂及其制备的混凝土，属于混凝土外加剂领域，添加剂由减水剂、缓凝剂和亲水性胶体按照质量比为1:1：(1‑5)制成；减水剂为萘磺酸盐甲醛缩合物和聚羧酸的混合成分，萘磺酸盐甲醛缩合物和聚羧酸按照质量百分比2：1混合；亲水性胶体为改性琼脂；本发明制备得到的添加剂可以有效的提高混凝土整体的减水率，使得减水率高高可以达到38％；同时还延长混凝土的凝结时间，保证混凝土的流动性，避免混凝土生产后的快速凝结带来的运输难的问题。
Concrete additive with water reducing and retarding functions and concrete prepared from concrete additive
The invention discloses a concrete additive with water reducing and retarding functions and concrete prepared from the concrete additive, and belongs to the field of concrete admixtures, the additive is prepared from a water reducing agent, a retarder and a hydrophilic colloid according to the mass ratio of 1: 1: (1-5); the water reducing agent is a mixed component of a naphthalene sulfonate formaldehyde condensate and polycarboxylic acid, and the naphthalene sulfonate formaldehyde condensate and the polycarboxylic acid are mixed according to the mass percent of 2: 1; the hydrophilic colloid is modified agar; the additive prepared by the invention can effectively improve the overall water-reducing rate of concrete, so that the water-reducing rate can reach 38%; meanwhile, the setting time of the concrete is also prolonged, the flowability of the concrete is ensured, and the problem of difficult transportation caused by rapid setting after concrete production is avoided.
本发明公开了一种具有减水缓凝功能的混凝土添加剂及其制备的混凝土，属于混凝土外加剂领域，添加剂由减水剂、缓凝剂和亲水性胶体按照质量比为1:1：(1‑5)制成；减水剂为萘磺酸盐甲醛缩合物和聚羧酸的混合成分，萘磺酸盐甲醛缩合物和聚羧酸按照质量百分比2：1混合；亲水性胶体为改性琼脂；本发明制备得到的添加剂可以有效的提高混凝土整体的减水率，使得减水率高高可以达到38％；同时还延长混凝土的凝结时间，保证混凝土的流动性，避免混凝土生产后的快速凝结带来的运输难的问题。
Concrete additive with water reducing and retarding functions and concrete prepared from concrete additive
一种具有减水缓凝功能的混凝土添加剂及其制备的混凝土
GUO XIAOPING (author)
2024-12-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Concrete additive and high-strength concrete prepared from same
| European Patent Office | 2024