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Hui Zhang, Peiwei Gao, Zhixiang Zhang, Youqiang Pan and Weiguang Zhang
Through laboratory testing, this research studied the connection between air-void structures of hardened concrete and fresh concrete and discussed the effects of the air-void structure on the salt-frost durability of the concrete. The results demonstrate...
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Byung-Hwan Ahn, Su-Jin Lee and Chan-Gi Park
The purpose of this study was to assess the physical and mechanical properties of pavement concrete for rural roads of South Korea made with air-cooled slag aggregate, which is an industrial byproduct. This study assessed the physical and chemical proper...
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Qingbo Wang, Jianyong Hu, Mingming Song, Hui Shen, Yu Zhou, Dongfeng Li and Feng Xie
Aiming at establishing the transient flow characteristics of gas?liquid two-phase flow in high-undulation water pipelines, based on the bubble distribution law measured using physical tests, the bubble distribution law function was input into the hump-pi...
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José Aparecido Canova, Generoso De Angelis Neto, Rosângela Bergamasco
Pág. 25 - 31
Stone-quarry fines have been evaluated in mortar and concrete, but have presented drying shrinkage and consequently higher incidence of cracks than those with natural sand. This study compared the dry ripened mortar in two types of aggregates added of 8%...
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Boran Zhang, Wuyi Wan and Mengshan Shi
Water hammer is an undesired hydraulic shock phenomenon in water supply pipe systems. It is very important to simulate water hammer for preventing the hazard of over pressure. In order to predict the transient pressure caused by a valve closing in a grav...
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Xiaoyun Song, Heping Zheng, Lei Xu, Tingting Xu and Qiuyu Li
An investigation was carried out to study the influence of two types of anti-washout admixtures (AWAs) on the performance of underwater concrete, specifically, workability and washout resistance. The tested AWAs were hydroxypropyl methylcellulose (HPMC) ...
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Jacek Golaszewski, Malgorzata Golaszewska and Grzegorz Cygan
Freeze?thaw resistance is a significant issue in the durability of concrete; however, it is not widely discussed in the context of limestone addition to concrete. The present study aims to compare the effect of the addition of different types of limeston...
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Blas Cantero, Miguel Bravo, Jorge de Brito, Isabel Fuencisla Sáez del Bosque and César Medina
Concrete is the most widely used construction material in the world; as such, the best way to promote a more sustainable construction industry is to improve the environmental performance of this material. Since cement production is the main source of the...
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Richárd Wéber, Csaba Hos
Pág. 1 - 9
This paper focuses on the hydrodynamic behavior of liquid pipelines in the presence of air valves. The aim of installing such valves on pipeline systems is twofold: on one hand, they release the accumulated air content and on the other hand, they allow t...
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Miguel Bravo, Jorge De Brito and Luís Evangelista
This investigation intends to analyse the thermal performance of concrete with recycled aggregates (RA) from construction and demolition waste (CDW) collected from several locations in Portugal. A total of 17 concrete mixes were analysed by means of ther...
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Carlos Aguilar R., Hugo Barrera V.
Pág. Page 40 - 46
The main objective of the investigation was to study the influence of different types and amount of fines on the selfcompactingbehavior and mechanical properties of this concrete type. It was analyzed 6 types of fine in different amount,two with cement p...
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Bing Li, Wenbin Zheng and Yang Zhang
This study aims to investigate the effect of high temperature on the mechanical properties of low-slump polypropylene fiber (PPF) concrete, and tests the tensile and compressive properties of 204 groups of low-slump PPF concrete with eight different dosa...
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