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A platform for research: civil engineering, architecture and urbanism
Composite early-strength water reducing agent and preparation method and application thereof
The invention relates to the technical field of concrete admixtures, and relates to a composite early-strength water reducing agent and a preparation method and application thereof. The composite early-strength water reducing agent comprises the following components in parts by mass: 80 to 90 parts of deionized water, 60 to 70 parts of polycarboxylate-type water reducing agent, 30 to 35 parts of starch, 10 to 25 parts of fly ash, 5 to 10 parts of triethanolamine, 3 to 6 parts of defoaming agent and 1 to 4 parts of accelerator. The polycarboxylate-type water reducing agent is a mixture composedof an APEG-type water reducing agent and an MPEG-type water reducing agent in the mass ratio of (1.2-1.4): (1.3-1.6). The preparation method comprises the following steps: S1, mixing and stirring deionized water and the polycarboxylate-type water reducing agent to obtain a mixture A; S2, adding starch, fly ash and triethanolamine into the mixture A to obtain a mixture B; S3, adding a defoaming agent and an accelerator into the mixture B, and stirring to obtain the composite early-strength water reducing agent; the composite early-strength water reducing agent can be doped into cement concrete, and the effect of improving the early strength of the concrete can be improved.
本发明涉及混凝土外加剂技术领域，它涉及一种复合早强减水剂及其制备方法和应用，包括以下组分及质量份：去离子水80‑90份、聚羧酸系减水剂60‑70份、淀粉30‑35份、粉煤灰10‑25份、三乙醇胺5‑10份、消泡剂3‑6份和速凝剂1‑4份，聚羧酸系减水剂是由APEG型减水剂和MPEG型减水剂以质量比（1.2‑1.4）：（1.3‑1.6）组成的混合物；制备步骤：S1、将去离子水与聚羧酸系减水剂混合搅拌得到混合物A；S2、往混合物A添加淀粉、粉煤灰和三乙醇胺得混合物B；S3、往混合物B添加消泡剂和速凝剂，搅拌得复合早强减水剂；复合早强减水剂能掺入水泥混凝土中，能提高对混凝土早期强度的提升作用。
Composite early-strength water reducing agent and preparation method and application thereof
The invention relates to the technical field of concrete admixtures, and relates to a composite early-strength water reducing agent and a preparation method and application thereof. The composite early-strength water reducing agent comprises the following components in parts by mass: 80 to 90 parts of deionized water, 60 to 70 parts of polycarboxylate-type water reducing agent, 30 to 35 parts of starch, 10 to 25 parts of fly ash, 5 to 10 parts of triethanolamine, 3 to 6 parts of defoaming agent and 1 to 4 parts of accelerator. The polycarboxylate-type water reducing agent is a mixture composedof an APEG-type water reducing agent and an MPEG-type water reducing agent in the mass ratio of (1.2-1.4): (1.3-1.6). The preparation method comprises the following steps: S1, mixing and stirring deionized water and the polycarboxylate-type water reducing agent to obtain a mixture A; S2, adding starch, fly ash and triethanolamine into the mixture A to obtain a mixture B; S3, adding a defoaming agent and an accelerator into the mixture B, and stirring to obtain the composite early-strength water reducing agent; the composite early-strength water reducing agent can be doped into cement concrete, and the effect of improving the early strength of the concrete can be improved.
本发明涉及混凝土外加剂技术领域，它涉及一种复合早强减水剂及其制备方法和应用，包括以下组分及质量份：去离子水80‑90份、聚羧酸系减水剂60‑70份、淀粉30‑35份、粉煤灰10‑25份、三乙醇胺5‑10份、消泡剂3‑6份和速凝剂1‑4份，聚羧酸系减水剂是由APEG型减水剂和MPEG型减水剂以质量比（1.2‑1.4）：（1.3‑1.6）组成的混合物；制备步骤：S1、将去离子水与聚羧酸系减水剂混合搅拌得到混合物A；S2、往混合物A添加淀粉、粉煤灰和三乙醇胺得混合物B；S3、往混合物B添加消泡剂和速凝剂，搅拌得复合早强减水剂；复合早强减水剂能掺入水泥混凝土中，能提高对混凝土早期强度的提升作用。
Composite early-strength water reducing agent and preparation method and application thereof
一种复合早强减水剂及其制备方法和应用
PANG YONGXIAN (author) / PANG SENLIN (author) / YI GANGZHAO (author)
2020-06-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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