Internal curing of natural hydraulic lime with superabsorbent polymers

被引：4
作者：
Li, Yunfeng [1 ]
Luo, Hongjie [1 ,2 ]
Zhang, Biao [1 ]
Wei, Xiaohong [1 ]
Wang, Fen [1 ]
Wang, Wenke [1 ]
Liu, Pengwei [1 ,2 ]
Zhu, Jianfeng [1 ]
机构：
[1] Shaanxi Univ Sci & Technol, Inst Silicate Cultural Heritage, Sch Mat Sci & Engn, Shaanxi Key Lab Green Preparat & Functionalizat In, Xian 710021, Peoples R China
[2] Shanghai Univ, Res Inst Cultural Rel, Shanghai 200444, Peoples R China
来源：
MATERIALS TODAY COMMUNICATIONS | 2023年 / 34卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Natural hydraulic lime; Internal curing; Early hydration; Autogenous shrinkage; Interface transition zone; AUTOGENOUS SHRINKAGE; HISTORIC MASONRY; WATER MIGRATION; YIELD-STRESS; CEMENT; PERFORMANCE; BEHAVIOR; TEMPERATURE; MORTARS; SUPERPLASTICIZER;
D O I：
10.1016/j.mtcomm.2022.105064
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper studied the swelling behavior of two types of superabsorbent polymer (SAP) and their effect on the properties of natural hydraulic lime (NHL2). The rheology of NHL2 paste depends on the water absorption ki-netics of SAP. Although chemically different, SAPs can promote hydration and Carbonation of NHL2. Moreover, SAPs can compensate for autogenous shrinkage. The hydration products of NHL showed a gradient growth on the SAP surface and formed an NHL/SAP interface transition zone. However, SAP will leave pores that provide access for CO2 to enter the matrix. As a result, the porosity increased, reducing the compressive strength.
引用
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页数：10
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