Results 81 to 90 of about 121,452 (195)

Effect of crystalline admixtures on shrinkage and alkali-silica reaction of biochar-cementitious composites

open access: yesDevelopments in the Built Environment
This study investigated effects of crystalline admixture (CA) on shrinkage and alkali-silica reaction behaviours of biochar-cementitious composites.
Xuqun Lin   +6 more
doaj   +1 more source

Effect of Limestone Powder on Autogenous Shrinkage of Concrete

open access: yes, 2011
The effect law and mechanism of limestone powder on autogenous shrinkage of concrete was studied. The results indicate that limestone powder accelerates autogenous shrinkage speed of concrete on which effect of fineness is little, and limestone powder ...
Bin Wang   +5 more
core   +1 more source

volumechange and strength characteristics of normal and high-strength mortars: effect of aggregate type and water-binder ratio

open access: yesCogent Engineering, 2018
This study investigated the impact of aggregate type on the volumechanges including drying shrinkage, autogenous shrinkage, and swelling for mortars made with different w/b ratios.
Ali H. Nahhab, Ghaida Faeq A. Zahra
doaj   +1 more source

Effect of external expansive agent addition on the strength and shrinkage deformation of UHPC [PDF]

open access: yesE3S Web of Conferences
This study explored the dosage-dependent influence of two types of external expansive agents on the strength, early-age autogenous shrinkage, and drying shrinkage deformation of ultra-high-performance concrete (UHPC). By analyzing the impact of expansive
Liu Xiaochun, Chen Xuede, Liu Xiaochun
doaj   +1 more source

Autogenous shrinkage of early age cement paste and mortar

open access: yes, 2019
Concrete is a brittle composite material that easily fractures under tension. Due to the fact that the early-age deformation of the concrete member is restrained by adjoining structures, cracking can occur throughout the concrete prior to application of ...
Lu, T., Lu, T. (author)
core   +2 more sources

Autogenous shrinkage reduction in concrete using eco-efficient hybrid internal curing (WAPB and LWA)

open access: yesCivil and Environmental Engineering
Autogenous shrinkage concrete is a critical issue related to self-desiccation during hydration. This study investigates the effectiveness of internal curing using water-absorbing polymer balls (WAPB), pre-wetted lightweight pumice aggregate (LWA), and a ...
Al-Shammari Saba, Al-Mulla Ikram
doaj   +1 more source

A Study On the Chemical shrinkage and Autogenous Shrinkage of High strength Concrete

open access: yesJournal of the Korean Institute of Building Construction, 2004
The purpose of this study is to investigate the chemical shrinkage and autogenous shrinkage of high strength cement paste and silica fume and fly ash and sand to cement ratio by the method of volumetric tests, and also investigate the autogenous shrinkage of high measurement method, and compare the results of volumetric test and linear length ...
openaire   +2 more sources

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