[HTML][HTML] Ultra-high-performance fiber-reinforced concrete. Part III: Fresh and hardened properties

MH Akeed, S Qaidi, HU Ahmed, W Emad… - Case Studies in …, 2022 - Elsevier
Abstracts Ultra-high-performance concrete (UHPC) refers to cement-based materials
exhibiting a compressive strength higher than 150 MPa, high ductility, and excellent …

Recent advances of ultrasonic testing of cement based materials at early ages

G Trtnik, M Gams - Ultrasonics, 2014 - Elsevier
To summarize some of the most important findings in the field of ultrasonic (US) testing of
early age hydration and formation of structure of different cement based materials (CBMs), a …

[HTML][HTML] Interpreting the early-age reaction process of alkali-activated slag by using combined embedded ultrasonic measurement, thermal analysis, XRD, FTIR and …

R Cao, S Zhang, N Banthia, Y Zhang… - Composites Part B …, 2020 - Elsevier
In the present study, the early-age reaction process of alkali-activated slag (AAS) pastes was
in-situ monitored by using embedded piezoelectric transducer based ultrasonic monitoring …

Experimental methods to evaluate the carbonation degree in concrete—state of the art review

H Bui, F Delattre, D Levacher - Applied Sciences, 2023 - mdpi.com
The carbonation action in concrete, in which carbonation reactions transform calcium
hydroxide into calcium carbonate, is considered as a multi-phase physico-chemical process …

An investigation of the microstructure and durability of a fluidized bed fly ash–metakaolin geopolymer after heat and acid exposure

P Duan, C Yan, W Zhou, W Luo, C Shen - Materials & Design, 2015 - Elsevier
This study aims to investigate durability and microstructure of fluidized bed fly ash and
metakaolin based geopolymer exposed to elevated temperatures and acid attack …

Strengthening the performance of limestone-calcined clay cement (LC3) using nano silica

RS Lin, S Oh, W Du, XY Wang - Construction and Building Materials, 2022 - Elsevier
Limestone-calcined clay cement (LC 3) is a promising cementitious material for the future;
however, it poses the problem of low strength in the early stage, which has not yet been …

Relationship between ultrasonic velocity and compressive strength for high-volume mineral-admixtured concrete

R Demirboğa, İ Türkmen, MB Karakoc - Cement and concrete research, 2004 - Elsevier
Ultrasound is used to evaluate the compressive strength of concrete with mineral
admixtures. In addition, the relationship between ultrasound velocity and compressive …

Ultrasonic evaluation of strength properties of cemented paste backfill: Effects of mineral admixture and curing temperature

H Jiang, H Yi, E Yilmaz, S Liu, J Qiu - Ultrasonics, 2020 - Elsevier
This paper presents the findings of a research study designed and conducted to investigate
the effects of mineral admixture and curing temperature on uniaxial compressive strength …

Hydration re-initiation of borated CSA systems with a two-stage mixing process: an application in extrusion-based concrete 3D printing

MK Mohan, AV Rahul, Y Tao, G De Schutter… - Cement and Concrete …, 2022 - Elsevier
Enhanced structural build-up and strength development are crucial for various construction
processes, especially in extrusion-based concrete 3D printing. However, controlling the …

Hydration stage identification and phase transformation of calcium sulfoaluminate cement at early age

SW Tang, HG Zhu, ZJ Li, E Chen, HY Shao - Construction and Building …, 2015 - Elsevier
This paper studies hydration stages and phase transformation mechanism of fresh calcium
sulfoaluminate (CSA) cement. Features of different hydration stages of CSA cement paste …