Impact of C-S-H seeding on hydration and strength of slag blended cement

被引：53

作者：

Li, Xuerun ^{[1
,2
]}

Bizzozero, Julien ^{[1
]}

Hesse, Christoph ^{[1
]}

机构：

[1] BASF Construct Addit GmbH, D-83308 Trostberg, Germany

[2] BASF Construct Addit GmbH, Dr Albert Frank Str 32, D-83308 Trostberg, Germany

来源：

CEMENT AND CONCRETE RESEARCH | 2022年 / 161卷

关键词：

Slag; C -S -H seeding; Microstructure; Hydration kinetics; Slag reaction; CALCIUM SILICATE HYDRATE; BLAST-FURNACE SLAG;

D O I：

10.1016/j.cemconres.2022.106935

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The impact of C-S-H seeding on the hydration of slag blended cement was systematically investigated, trying to understand and explore the potential of C-S-H seeding in blended cement. Three levels of substitution of cement by slag were investigated: 50, 75 and 95 wt%. Compressive strength, calorimetry, in-situ and fresh disc XRD experiments were carried out. Results show that C-S-H seeding improves the performance of slag blended cement significantly with regards to strength at early and later stage. Quantitative XRD analyses show how C-S-H seeding influences the clinker hydration kinetics. The microstructure of hardened blended cement paste was investigated using electron microscopy and mercury intrusion porosimetry. The results show that C-S-H seeding altered the microstructure dramatically by refining the porosity. Correlation of strength to heat release and pore structure indicates that there is structural impact of C-S-H seeding besides the impact on kinetics in the hardened samples.

引用

页数：19

共 50 条

[21] Insights into the hydration kinetics, microstructure and early strength of Portland cement containing synthetic C-S-H/PCE nanocomposites
Xu, Jing (09105@tongji.edu.cn); Li, Wengui (Wengui.li@unsw.edu.au), 2025, 157
[22] The effect of synthesis conditions on the efficiency of C-S-H seeds to accelerate cement hydration
Land, G.
Stephan, D.
CEMENT & CONCRETE COMPOSITES, 2018, 87 : 73 - 78
[23] Effect of blended steel slag-GBFS mineral admixture on hydration and strength of cement
Wang, Qiang
Yan, Peiyu
Mi, Guidong
CONSTRUCTION AND BUILDING MATERIALS, 2012, 35 : 8 - 14
[24] A Method for Semi-quantitative Analysis of C-S-H Gel in a Blended Cement Paste
胡曙光
Journal of Wuhan University of Technology(Materials Science), 2006, (S1) : 19 - 22
[25] The microstructural change of C-S-H at elevated temperature in Portland cement/GGBFS blended system
Jia, Zijian
Chen, Chun
Shi, Jinjie
Zhang, Yamei
Sun, Zhengming
Zhang, Peigen
CEMENT AND CONCRETE RESEARCH, 2019, 123
[26] Portland and Belite Cement Hydration Acceleration by C-S-H Seeds with Variable w/c Ratios
Morales-Cantero, Alejandro
Cuesta, Ana
De la Torre, Angeles G.
Mazanec, Oliver
Borralleras, Pere
Weldert, Kai S.
Gastaldi, Daniela
Canonico, Fulvio
Aranda, Miguel A. G.
MATERIALS, 2022, 15 (10)
[27] Hydration of blended ladle slag and calcium aluminate cement
Adesanya, Elijah
Ezu, Amarachi
Nguyen, Hoang
Rossler, Christine
Sreenivasan, Harisankar
Ohenoja, Katja
Kinnunen, Paivo
Illikainen, Mirja
JOURNAL OF BUILDING ENGINEERING, 2023, 66
[28] The composition and structure of C-S-H in blended cement pastes containing fly ash.
Love, CA
Richardson, IG
ELECTRON MICROSCOPY AND ANALYSIS 1999, 1999, (161): : 393 - 396
[29] A combined SPM/NI/EDS method to quantify properties of inner and outer C-S-H in OPC and slag-blended cement pastes
Wei, Y.
Gao, X.
Liang, S.
CEMENT & CONCRETE COMPOSITES, 2018, 85 : 56 - 66
[30] Characteristics of two types of C-S-H gel in hardened complex binder pastes blended with slag
LIU RengGuang
HAN FangHui
YAN PeiYu
Science China Technological Sciences, 2013, (06) : 1395 - 1402

← 1 2 3 4 5 →