Results 61 to 70 of about 4,819 (215)

Effect of graphene oxide particle as nanomaterial in the production of engineered cementitious composites including superplasticizer, fly ash, and polyvinyl alcohol fiber

, 2023
Naraindas Bheel, Montasir Osman Ahmed Ali, Mehmet Serkan Kırgız, Nasir Shafiq, Ravindran Gobinath   +4 more
openalex   +1 more source

Effect of Some Acrylate—Poly(Ethylene Glycol) Copolymers as Superplasticizers on the Mechanical and Surface Properties of Portland Cement Pastes

Adsorption Science & Technology, 2005
Ordinary Portland cement (OPC) pastes with added superplasticizer were made using water/cement weight ratios of standard consistency. Three types of superplasticizer based on acrylate—poly(ethylene glycol) copolymers were used.
S.A. Abo-El-Enein, S. Hanafi, F.I. El-Hosiny, El-Said H.M. El-Mosallamy, M.S. Amin   +4 more
doaj   +1 more source

The Working Mechanism of Starch and Diutan Gum in Cementitious and Limestone Dispersions in Presence of Polycarboxylate Ether Superplasticizers

Applied Rheology, 2013
Polysaccharides provide high potential to be used as rheology modifying admixtures in mineral binder systems for the construction industry such as concrete or mortar.
Schmidt Wolfram, Brouwers H.J.H., Kühne Hans-Carsten, Meng Birgit   +3 more
doaj   +1 more source

Rheokinetics of Cement Paste Hydration during the Dormant Phase

Applied Rheology, 2018
The hydration kinetics of four CEM I 52.5 N cements in the presence of two different superplasticizers was studied. The kinetics was characterized by monitoring the evolution of the dynamic modulus at constant frequency on a rotational rheometer.
Masalova Irina, Mbasha Willy, Haldenwang Rainer, Malkin Alexander Ya   +3 more
doaj   +1 more source

Data on effect of a reducer of water and retarder of setting time admixtures of cement pastes and mortar in hardened stat

Data in Brief, 2018
The aim of this work is to study the influence of the admixture of superplasticizers on the physical properties of cement paste to know the initial and final time, water content and mechanical performance of concrete.In this work we have incorporated an ...
Mohammed Husssein Khudhair, Mohamed S. El Youbi, Ahmed Elharfi   +2 more
doaj   +1 more source

Effect of complex modification on cement compositions

MATEC Web of Conferences, 2018
The article deals with the modification of cement compositions by a complex of modifiers, including superplasticizers and finely dispersed mineral fillers (micro fillers), based on local raw materials and by-products of the industry, as well as being ...
Enzhievskaya Irina, Odintsov Cyril, Chekhlov Maxim   +2 more
doaj   +1 more source

On effect of superplasticizers and mineral additives on shrinkage of hardened cement paste and concrete

MATEC Web of Conferences, 2018
A model describing the variation in autogenous shrinkage and drying shrinkage of portland cement concrete, depending on the volume of aggregates and the shrinkage of hardened cement paste, is presented.
Nesvetaev Grigory, Koryanova Yulia, Zhilnikova Tatiana   +2 more
doaj   +1 more source

Effect of some prepared superplasticizers (Cyclohexanone Based) on compressive strength and physico-chemical properties of oil well cement pastes

Egyptian Journal of Petroleum, 2017
Two different superplasticizers particularly cyclohexanone formaldehyde sulfanilate (CFS) and cyclohexanone glyoxylic sulfanilate (CGS) were prepared; also, their effect on mechanical and physico-chemical properties of oil well cement was assessed.
I. Aiad, A.M. Al-Sabagh, S.H. Shafek, A.I. Adawy, S.A. Abo-EL-Enein   +4 more
doaj   +1 more source

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

, 2018
Ashfaque Ahmed Jhatial, Samiullah Sohu, Muhammad Tahir Lakhiar, Jam Shahzaib Khan, Ahsan Ali   +4 more
openalex   +1 more source

Influence of Superplasticizers on the Diffusion-Controlled Synthesis of Gypsum Crystals

Crystals
Gypsum (CaSO4·2H2O) crystallization underpins numerous industrial processes, yet its response to chemical admixtures remains incompletely understood. This study investigates diffusion-controlled crystal growth in a coaxial test tube system to evaluate ...
F. Kakar, C. Pritzel, T. Kowald, M. S. Killian   +3 more
doaj   +1 more source