Results 101 to 110 of about 21,203 (255)

Effect of the cement type on compatibility with carboxylate superplasticisers

open access: yesMateriales de Construccion, 2011
An empirical study was conducted to gain a fuller understanding of the interactions taking place in cementsuperplasticiser systems. To this end, two clinkers of known chemical and phase composition were prepared in this study to gain insight into such ...
G. Bundyra-Oracz, W. Kurdowski
doaj   +1 more source

Stability of Air Content in Fresh Concretes with PCE-Based Superplasticizers

open access: yesNordic Concrete Research, 2019
Air contents of concrete are necessary for concrete durability in freeze-thaw exposure. According to the Finnish concrete code, the target value for air content varies between 4% and 5.5% for XF - exposure classes. Lately in Finland, some cases showed an
Al-Neshawy Fahim   +2 more
doaj   +1 more source

Autogenous shrinkage of zeolite cement pastes with low water-binder ratio [PDF]

open access: yes, 2015
Self-desiccation is one common phenomenon of high-performance cementitious materials characterized by low water to cementitious material ratio (w/c).
De Schutter, Geert   +3 more
core   +1 more source

Optimization of selection process of constituent materials for high performance concrete and mortars

open access: yesBudownictwo i Architektura, 2015
The paper gives coverage on approach to the optimization of selection process of constituents for high performance concrete (HPC) and mortars. There is shown the example selection of cement, mineral and chemical admixtures, as the most costly and ...
Nataliya Lushnikova
doaj   +1 more source

Effectiveness of Locally Available Superplasticizers on the Workability and Strength of Concrete [PDF]

open access: diamond, 2018
Ashfaque Ahmed Jhatial   +4 more
openalex   +1 more source

Sifat Rheology Semen Pasta Ditinjau Dari Campuran Material Penyusunnya Dan Penggunaan Superplasticizer [PDF]

open access: yes, 2014
Rheology merupakan salah satu tolak ukur yang baik untuk menentukan sifat dari beton segar seperti kelecakan, kepadatan, dan sifat air dalam beton. Rheology suatu campuran sangat dipengaruhi oleh ratio volume air dan powder (Vw/Vp), jumlah air dan jumlah
Antoni, A. (Antoni)   +3 more
core  

Effect of magnetic water on strength and workability of high performance concrete [PDF]

open access: yesJournal of Structural and Construction Engineering, 2016
Nowadays, concrete is one of the most important and widely used human product. Improving concrete characteristics have always been one of the fundamental subjects for engineers.
Moosa Mazloom, Sayed Mojtaba Miri
doaj  

Influence of mechanochemical activation on the features in the of hydration of cement

open access: yesИнженерно-строительный журнал, 2016
At the same time with the introduction of various additives to the concrete mix, a promising method for enhancing the physical and mechanical properties of the cement concrete is the activation of the binder.
R. A. Ibragimov, S.I. Pimenov
doaj   +1 more source

Studi Eksperimental Pengaruh Penambahan Abu Sekam Padi Nano Dan Bahan Tambah Superplasticizer Terhadap Kuat Tekan Beton [PDF]

open access: yes, 2013
This research aimed to investigate effect of using nano materials rice husk ash and superplasticizer admixture to concrete compressive strength. Nano rice husk ash used as subtitute of pozzolan portland cement.
Ardiyati, P. (Putri)   +3 more
core  

Characteristics of Fresh and Hardened Sustainable Foamed Concrete for Structural Applications

open access: yesJournal of Engineering
In light of the trends towards producing sustainable lightweight concrete and utilizing local resources and recycled materials, this study explored these possibilities.
Husam Khalaf Khudhair Al-Ani   +2 more
doaj   +1 more source

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