首页|废弃石粉基预应力孔道压浆料的制备及性能研究

废弃石粉基预应力孔道压浆料的制备及性能研究

扫码查看
为了解决机制砂生产过程中的废弃石粉(WSP)资源化再利用难题,采用WSP制备了预应力孔道压浆料,研究了单掺 WSP、复掺 WSP与粉煤灰或微珠对预应力孔道压浆料流动度、抗压强度及抗折强度的影响.结果表明:单掺 WSP或复掺 WSP与粉煤灰时,预应力孔道压浆料的流动度和抗折强度不符合规范要求;复掺适量 WSP与微珠时,预应力孔道压浆料的工作性和力学性能均符合规范要求,其中,当WSP掺量为32%、微珠掺量为45 g时,所制备的预应力孔道压浆料的性能和经济性相对最优,预应力混凝土桥梁工程可优先考虑此方案.
Preparation and performance study of prestressed duct grouting material based on waste stone powder
In order to solve the problem of resource reuse of waste stone powder(WSP)in the production process of manufactured sand,prestressed duct grouting material was prepared by using WSP.The effects of single addition of WSP,compound addition of WSP and fly ash or microbeads on the flowability,compressive strength,and flexural strength of prestressed duct grouting material were studied.The results show that when the WSP is added alone or in combination with fly ash,the flowability and flexural strength of the prestressed duct grouting material do not meet the requirements of the specifications.When adding appropriate content of WSP and microbeads,the workability and mechanical properties of the prestressed duct grouting material meet the requirements of the specifications.Among them,when the content of WSP and microbeads is 32%and 45 g,respectively,the performance and economy of the prestressed duct grouting material are relatively optimal,and this plan can be given priority consideration in prestressed concrete bridge engineering.

Prestressed concrete bridge engineeringPrestressed duct grouting materialWaste stone powderWorkabilityMechanical property

李威、叶智远、明阳、徐文、马必聪、梁广欢

展开 >

广西苏博特新材料科技有限公司,广西贵港 537124

广西路桥工程集团有限公司,广西南宁 530000

江苏苏博特新材料股份有限公司,江苏南京 211103

桂林理工大学,广西桂林 541004

展开 >

预应力混凝土桥梁工程 预应力孔道压浆料 废弃石粉 工作性 力学性能

2025

混凝土与水泥制品
苏州混凝土水泥制品研究院 中国混凝土与水泥制品协会

混凝土与水泥制品

影响因子:0.462
ISSN:1000-4637
年,卷(期):2025.(1)