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A platform for research: civil engineering, architecture and urbanism
Water-locking anti-segregation agent for concrete, and preparation method thereof
The invention relates to a water-locking anti-segregation agent for concrete, and a preparation method thereof. The water-locking anti-segregation agent is formed by polymerizing a polyether macromonomer, modified polyaspartic acid, phytic acid maleate, a chain transfer agent and an initiator, and the special molecular structures of aspartic acid and phytic acid are utilized to improve the water locking performance and the dispersing performance to cement. When the prepared water-locking anti-segregation agent accounts for 0.02-0.03% of a cementing material is doped under the condition that bleeding segregation of concrete occurs, water can be effectively locked, the workability and wrapping performance of the concrete are improved, the slump, the expansion degree and the time-dependent loss of the concrete are not affected, and the strength of the concrete is improved.
本发明涉及一种混凝土用锁水抗离析剂及其制备方法，由聚醚大单体、改性聚天冬氨酸、植酸马来酸酯、链转移剂、引发剂聚合而成，利用天冬氨酸和植酸的特殊分子结构提高锁水性能和对水泥的分散性能。本发明制备的锁水抗离析剂在混凝土出现泌水离析的情况下掺入胶凝材料的0.02％～0.03％，能有效的锁住水分，提高混凝土和易性和包裹性，同时不影响混凝土坍落度、扩展度和经时损失，提高混凝土强度。
Water-locking anti-segregation agent for concrete, and preparation method thereof
The invention relates to a water-locking anti-segregation agent for concrete, and a preparation method thereof. The water-locking anti-segregation agent is formed by polymerizing a polyether macromonomer, modified polyaspartic acid, phytic acid maleate, a chain transfer agent and an initiator, and the special molecular structures of aspartic acid and phytic acid are utilized to improve the water locking performance and the dispersing performance to cement. When the prepared water-locking anti-segregation agent accounts for 0.02-0.03% of a cementing material is doped under the condition that bleeding segregation of concrete occurs, water can be effectively locked, the workability and wrapping performance of the concrete are improved, the slump, the expansion degree and the time-dependent loss of the concrete are not affected, and the strength of the concrete is improved.
本发明涉及一种混凝土用锁水抗离析剂及其制备方法，由聚醚大单体、改性聚天冬氨酸、植酸马来酸酯、链转移剂、引发剂聚合而成，利用天冬氨酸和植酸的特殊分子结构提高锁水性能和对水泥的分散性能。本发明制备的锁水抗离析剂在混凝土出现泌水离析的情况下掺入胶凝材料的0.02％～0.03％，能有效的锁住水分，提高混凝土和易性和包裹性，同时不影响混凝土坍落度、扩展度和经时损失，提高混凝土强度。
Water-locking anti-segregation agent for concrete, and preparation method thereof
一种混凝土用锁水抗离析剂及其制备方法
A GUANGQIANG (author) / WANG LEI (author) / TANG KAI (author) / LI JINMEI (author) / XU XINGWEI (author) / SU YULING (author) / GUO JUN (author)
2020-04-21
Patent
Electronic Resource
Chinese
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