Evaluation of mix design strategies to optimize flow and strength of mortar internally cured with superabsorbent polymers

被引：16

作者：

Adams, Caitlin J. J. ^{[1
]}

Bose, Baishakhi ^{[1
]}

Olek, Jan ^{[2
]}

Erk, Kendra A. A. ^{[1
]}

机构：

[1] Purdue Univ, Sch Mat Engn, W Lafayette, IN 47907 USA

[2] Purdue Univ, Lyles Sch Civil Engn, W Lafayette, IN 47907 USA

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2022年 / 324卷

关键词：

Superabsorbent polymers; Flow table test; Internal curing; Compressive strength; Flexural strength; Mortar microstructure; Workability; AUTOGENOUS SHRINKAGE; CONCRETE; SAPS; HYDROGELS; PASTES;

D O I：

10.1016/j.conbuildmat.2022.126664

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A straightforward mix design method was developed for proportioning mortars containing superabsorbent polymers (SAPs). When modified by introduction of a typical amount of SAP (i.e., 0.2% by weight of cement), the 0.42 w/c ordinary Portland cement (OPC) mortars required addition of extra water and/or high-range water reducing admixture (HRWRA) to achieve a minimum target percent flow in mortar flow table tests. At high w/c (& GE;0.49), SAP accelerated compressive and flexural strength development. In all mortars tested, the addition of SAP either preserved or increased compressive and flexural strength values relative to SAP-free mortar with the same w/c.

引用

页数：13

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