Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Quick-setting foaming cement for grouting and preparation method thereof
The invention belongs to the technical field of road engineering materials, and particularly relates to quick-setting foaming cement for grouting and a preparation method of the quick-setting foaming cement. The quick-setting foaming cement comprises the following components in parts by weight: cement, a solid admixture and water, wherein the cement comprises 70-100 parts of sulphoaluminate cement and 0-30 parts of Portland cement; the solid admixture comprises 0.5-4 parts of sodium percarbonate, 2-4 parts of an early strength agent, 1-3 parts of a foam stabilizer, 0.5-2 parts of aluminum sulfate, 0.1-0.8 part of PVA fibers and 0.01-0.2 part of a naphthalene water reducer, and the addition amount of the water is 60-70 parts. According to the invention, the water cement ratio is set to 0.6-0.7, and the naphthalene water reducer is supplemented, so that the material has good groutability, and on the premise, the material can be coagulated and hardened within 1h after foaming, the compressive strength in 4h is more than 1MPa, and the compressive strength in 24h is not less than 1.5 MPa.
本发明属于道路工程材料技术领域，具体涉及一种注浆用速凝发泡水泥及其制备方法。该速凝发泡水泥包括以重量份计的水泥、固态外加剂和水，其中水泥包括硫铝酸盐水泥70‑100份、硅酸盐水泥0‑30份；固态外加剂包括过碳酸钠0.5‑4份、早强剂2‑4份、稳泡剂1‑3份、硫酸铝0.5‑2份、PVA纤维0.1‑0.8份、萘系减水剂0.01‑0.2份，所述水的添加量为60‑70份。本发明将水灰比设置为0.6‑0.7并辅以萘系减水剂使得材料可灌性好，且在此前提下材料完成发泡后能够在1h内凝结硬化，4h抗压强度1MPa以上，24h抗压强度不低于1.5MPa。
Quick-setting foaming cement for grouting and preparation method thereof
The invention belongs to the technical field of road engineering materials, and particularly relates to quick-setting foaming cement for grouting and a preparation method of the quick-setting foaming cement. The quick-setting foaming cement comprises the following components in parts by weight: cement, a solid admixture and water, wherein the cement comprises 70-100 parts of sulphoaluminate cement and 0-30 parts of Portland cement; the solid admixture comprises 0.5-4 parts of sodium percarbonate, 2-4 parts of an early strength agent, 1-3 parts of a foam stabilizer, 0.5-2 parts of aluminum sulfate, 0.1-0.8 part of PVA fibers and 0.01-0.2 part of a naphthalene water reducer, and the addition amount of the water is 60-70 parts. According to the invention, the water cement ratio is set to 0.6-0.7, and the naphthalene water reducer is supplemented, so that the material has good groutability, and on the premise, the material can be coagulated and hardened within 1h after foaming, the compressive strength in 4h is more than 1MPa, and the compressive strength in 24h is not less than 1.5 MPa.
本发明属于道路工程材料技术领域，具体涉及一种注浆用速凝发泡水泥及其制备方法。该速凝发泡水泥包括以重量份计的水泥、固态外加剂和水，其中水泥包括硫铝酸盐水泥70‑100份、硅酸盐水泥0‑30份；固态外加剂包括过碳酸钠0.5‑4份、早强剂2‑4份、稳泡剂1‑3份、硫酸铝0.5‑2份、PVA纤维0.1‑0.8份、萘系减水剂0.01‑0.2份，所述水的添加量为60‑70份。本发明将水灰比设置为0.6‑0.7并辅以萘系减水剂使得材料可灌性好，且在此前提下材料完成发泡后能够在1h内凝结硬化，4h抗压强度1MPa以上，24h抗压强度不低于1.5MPa。
Quick-setting foaming cement for grouting and preparation method thereof
一种注浆用速凝发泡水泥及其制备方法
CAI YINGCHUN (Autor:in) / CHEN KUN (Autor:in) / JANG EUN HWA (Autor:in) / LI GUANGHUI (Autor:in) / LIU XINXIAO (Autor:in) / ZHANG AILI (Autor:in) / WU FENG'E (Autor:in)
30.08.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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