Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Roadbed retard\ing cement and preparation method thereof
The invention relates to roadbed retarding cement and a preparation method thereof, and belongs to the technical field of building materials. The roadbed retarded cement comprises the following components in parts by weight: 60-64 parts of clinker, 18-24 parts of peastone, 5-7 parts of dry fly ash, 2-4 parts of sepiolite, 3-5 parts of coal-fired furnace slag, 4-8 parts of undisturbed phosphogypsumand 0.06-0.10 part of industrial molasses diluent, wherein the clinker is prepared from 63-66 parts of limestone, 16-18 parts of yeast sugar residue, 1-3 parts of non-ferrous metal ash, 4-6 parts ofdried sludge residue, 1-3 parts of polluted soil and 7-9 parts of red sandstone. The yeast sugar residues are directly used for cement raw material proportioning, and the SO3 content in clinker is increased, so that the cement setting time is delayed, and the construction requirements are met; and by utilizing the retarding effect and micro-expansion effect of soluble phosphorus and fluorine ionsin the phosphogypsum, the initial setting time of the cement is stably prolonged by about 140 minutes without additionally adding a retarder and an expanding agent, and the strength of the cement is not lower than that of ordinary portland cement of the same grade.
本发明涉及一种道路基层缓凝水泥及其制备方法，属于建筑材料技术领域。所述道路基层缓凝水泥包括重量份计的以下组分：熟料60~64份，瓜米石18~24份，干粉煤灰5~7份，海泡石2~4份，燃煤炉渣3~5份，原状磷石膏4~8份，工业糖蜜稀释液0.06%~0.10份，所述熟料由63~66份石灰石、16~18份酵母糖渣、1~3份有色金属灰渣、4~6份干化污泥渣、1~3份污染土、7~9份红砂岩为原料制备而成。本发明将酵母糖渣直接用于水泥生料配料，提高熟料中SO3含量从而延缓水泥凝结时间使满足施工需求；利用磷石膏中可溶性磷、氟离子缓凝的作用和微膨胀效果，不需另外加入缓凝剂和膨胀剂水泥初凝时间稳定延长140min左右且强度不低于同等级普通硅酸盐水泥。
Roadbed retard\ing cement and preparation method thereof
The invention relates to roadbed retarding cement and a preparation method thereof, and belongs to the technical field of building materials. The roadbed retarded cement comprises the following components in parts by weight: 60-64 parts of clinker, 18-24 parts of peastone, 5-7 parts of dry fly ash, 2-4 parts of sepiolite, 3-5 parts of coal-fired furnace slag, 4-8 parts of undisturbed phosphogypsumand 0.06-0.10 part of industrial molasses diluent, wherein the clinker is prepared from 63-66 parts of limestone, 16-18 parts of yeast sugar residue, 1-3 parts of non-ferrous metal ash, 4-6 parts ofdried sludge residue, 1-3 parts of polluted soil and 7-9 parts of red sandstone. The yeast sugar residues are directly used for cement raw material proportioning, and the SO3 content in clinker is increased, so that the cement setting time is delayed, and the construction requirements are met; and by utilizing the retarding effect and micro-expansion effect of soluble phosphorus and fluorine ionsin the phosphogypsum, the initial setting time of the cement is stably prolonged by about 140 minutes without additionally adding a retarder and an expanding agent, and the strength of the cement is not lower than that of ordinary portland cement of the same grade.
本发明涉及一种道路基层缓凝水泥及其制备方法，属于建筑材料技术领域。所述道路基层缓凝水泥包括重量份计的以下组分：熟料60~64份，瓜米石18~24份，干粉煤灰5~7份，海泡石2~4份，燃煤炉渣3~5份，原状磷石膏4~8份，工业糖蜜稀释液0.06%~0.10份，所述熟料由63~66份石灰石、16~18份酵母糖渣、1~3份有色金属灰渣、4~6份干化污泥渣、1~3份污染土、7~9份红砂岩为原料制备而成。本发明将酵母糖渣直接用于水泥生料配料，提高熟料中SO3含量从而延缓水泥凝结时间使满足施工需求；利用磷石膏中可溶性磷、氟离子缓凝的作用和微膨胀效果，不需另外加入缓凝剂和膨胀剂水泥初凝时间稳定延长140min左右且强度不低于同等级普通硅酸盐水泥。
Roadbed retard\ing cement and preparation method thereof
一种道路基层缓凝水泥及其制备方法
HUANG YINGZI (Autor:in) / ZOU LEI (Autor:in) / ZHENG ZHILONG (Autor:in) / LUO ZHE (Autor:in) / FANG DA (Autor:in) / CHEN JUN (Autor:in) / XIONG YIJUN (Autor:in) / ZENG FEI (Autor:in) / WANG TIZHENG (Autor:in)
09.03.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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