A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Investigation on fundamental properties of microfine cement and cement-slag grouts
https://orcid.org/0000-0002-9382-0010
HighlightsProperties of eight cement grouts with various composition and grains are presented.Effects of W/C ratios (1.0–3.0), fineness, SP and composition are studied.Rheological parameters, fresh states and mechanical properties are determined.Property optimization and grouting effectiveness for MC based grouts are discussed.
AbstractTo ensure excellent rheological behavior, penetrability and mechanical property of microfine cement (MC) grout in the field work, it is essential to obtain and control its property by laboratory tests. In this study, rheological and mechanical properties of six different MC grouts (three portland-based and three slag-blended) and two ordinary Portland cements (ASTM I and III) are measured. MC suspension was prepared at five W/C ratios (1.0, 1.2, 1.5, 2.0 and 3.0) without or with superplasticizer (SP). The properties investigated in this study were: particle size distribution, rheological properties (apparent viscosity, yield stress and plastic viscosity), fresh states (mini-slump, bleed capacity and final setting time) and mechanical properties (early strength development, compressive strength, flexural strength, elasticity modulus, shrinkage/expansion and sand-consolidation strength). The results showed that rheological behaviors and mechanical properties of MC grouts were affected obviously by the W/C ratio, cement fineness, cement type and the addition of SP, etc. All MC suspensions behaved as the Bingham fluids and were stable for W/C=1.0, 1.2 and 1.5. The detrimental effect of finer grain size on viscosity can be negated by using SP. To ensure less leaching, sufficient fluidity and enough penetrability in sand voids or micro cracks, the W/C ratio was recommended as 1.0–2.0. The SP dosages should not be excessive to avoid instability, oversaturation or long-setting.
Investigation on fundamental properties of microfine cement and cement-slag grouts
https://orcid.org/0000-0002-9382-0010
HighlightsProperties of eight cement grouts with various composition and grains are presented.Effects of W/C ratios (1.0–3.0), fineness, SP and composition are studied.Rheological parameters, fresh states and mechanical properties are determined.Property optimization and grouting effectiveness for MC based grouts are discussed.
AbstractTo ensure excellent rheological behavior, penetrability and mechanical property of microfine cement (MC) grout in the field work, it is essential to obtain and control its property by laboratory tests. In this study, rheological and mechanical properties of six different MC grouts (three portland-based and three slag-blended) and two ordinary Portland cements (ASTM I and III) are measured. MC suspension was prepared at five W/C ratios (1.0, 1.2, 1.5, 2.0 and 3.0) without or with superplasticizer (SP). The properties investigated in this study were: particle size distribution, rheological properties (apparent viscosity, yield stress and plastic viscosity), fresh states (mini-slump, bleed capacity and final setting time) and mechanical properties (early strength development, compressive strength, flexural strength, elasticity modulus, shrinkage/expansion and sand-consolidation strength). The results showed that rheological behaviors and mechanical properties of MC grouts were affected obviously by the W/C ratio, cement fineness, cement type and the addition of SP, etc. All MC suspensions behaved as the Bingham fluids and were stable for W/C=1.0, 1.2 and 1.5. The detrimental effect of finer grain size on viscosity can be negated by using SP. To ensure less leaching, sufficient fluidity and enough penetrability in sand voids or micro cracks, the W/C ratio was recommended as 1.0–2.0. The SP dosages should not be excessive to avoid instability, oversaturation or long-setting.
Investigation on fundamental properties of microfine cement and cement-slag grouts
https://orcid.org/0000-0002-9382-0010
HighlightsProperties of eight cement grouts with various composition and grains are presented.Effects of W/C ratios (1.0–3.0), fineness, SP and composition are studied.Rheological parameters, fresh states and mechanical properties are determined.Property optimization and grouting effectiveness for MC based grouts are discussed.
AbstractTo ensure excellent rheological behavior, penetrability and mechanical property of microfine cement (MC) grout in the field work, it is essential to obtain and control its property by laboratory tests. In this study, rheological and mechanical properties of six different MC grouts (three portland-based and three slag-blended) and two ordinary Portland cements (ASTM I and III) are measured. MC suspension was prepared at five W/C ratios (1.0, 1.2, 1.5, 2.0 and 3.0) without or with superplasticizer (SP). The properties investigated in this study were: particle size distribution, rheological properties (apparent viscosity, yield stress and plastic viscosity), fresh states (mini-slump, bleed capacity and final setting time) and mechanical properties (early strength development, compressive strength, flexural strength, elasticity modulus, shrinkage/expansion and sand-consolidation strength). The results showed that rheological behaviors and mechanical properties of MC grouts were affected obviously by the W/C ratio, cement fineness, cement type and the addition of SP, etc. All MC suspensions behaved as the Bingham fluids and were stable for W/C=1.0, 1.2 and 1.5. The detrimental effect of finer grain size on viscosity can be negated by using SP. To ensure less leaching, sufficient fluidity and enough penetrability in sand voids or micro cracks, the W/C ratio was recommended as 1.0–2.0. The SP dosages should not be excessive to avoid instability, oversaturation or long-setting.
Investigation on fundamental properties of microfine cement and cement-slag grouts
Li, Shucai (author) / Sha, Fei (author) / Liu, Rentai (author) / Zhang, Qingsong (author) / Li, Zhaofeng (author)
Construction and Building Materials ; 153 ; 965-974
2017-05-21
10 pages
Article (Journal)
Electronic Resource
English
Investigation on fundamental properties of microfine cement and cement-slag grouts
| Online Contents | 2017
Investigation on fundamental properties of microfine cement and cement-slag grouts
| British Library Online Contents | 2017
Investigation on fundamental properties of microfine cement and cement-slag grouts
| British Library Online Contents | 2017
Ground improvement technique using microfine slag cement grouts
| British Library Conference Proceedings | 2006
Study of Microfine Cement Grouts
| British Library Conference Proceedings | 1997