Comparison between the performance of expansive SCC and expansive conventional concretes in different expansion and curing conditions

被引：45

作者：

Garcia Caivo, J. L. ^{[1
]}

Revuelta, D. ^{[1
]}

Carballosa, P. ^{[1
]}

Gutierrez, J. P. ^{[1
]}

机构：

[1] CSIC, Inst Construct Sci Eduardo Torroja, Serrano Galvache 4, Madrid 28033, Spain

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2017年 / 136卷

关键词：

Self-compacting concrete; Expansive concrete; Expansive agent; Microstructure; Performance; Curing conditions; Restraining conditions; SELF-COMPACTING CONCRETE; CEMENT-BASED COMPOSITES; VOLUME FLY-ASH; MECHANICAL-PROPERTIES; PORTLAND-CEMENT; MASS CONCRETE; ETTRINGITE FORMATION; MINERAL ADDITIONS; PART I; HYDRATION;

D O I：

10.1016/j.conbuildmat.2017.01.039

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Present paper evaluates the performance of expansive conventional concretes and expansive SCC, their physic-mechanical and microstructural properties, and their uniaxial restraining expansion regime, under different both restraining and curing conditions. The obtained results indicate that restraining conditions influence compressive strength and porosity structure, as well as the morphology and the chemical composition of the resulting expansive hydrates (ettringite formed from type-K agent and portlandite formed from type-G agent). The curing conditions and the concrete composition also influence the reactivity of the expansive agents. The use of limestone filler is advisable instead of fly ashes when designing expansive SCC. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：277 / 285

页数：9

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