Results 161 to 170 of about 9,409 (217)

A New Type of Colorless Superplasticizer

Applied Mechanics and Materials, 2011
This paper studies industrial acetone, p-amino benzene sulfonate as raw materials, developed a colorless superplasticizer and the test on its liquidity, solid content, setting time, and the performance of concrete. Finally got this colorless superplasticizer for decorative concrete.
Xiao Qiu Ma
openaire   +2 more sources

Selection of superplasticizer in concrete mix design by measuring the early electrical resistivities of pastes

Cement and Concrete Composites, 2007
Electrical resistivity measurement was used to study the early setting and hardening process of pastes, with different dosages, for 2 types of superplasticizer.
Wei, Xiao sheng, Li, Zong jin, Xiao, Lian zhen   +2 more
exaly   +2 more sources

Some of the next articles are maybe not open access.

Related searches:

Use of Superplasticizers as Water Reducers

Cement, Concrete, and Aggregates, 1979
Abstract This report describes the performance of superplasticizers used as water-reducing admixtures in concrete. Various dosages of three commercially available superplasticizers were added to air-entrained reference concretes containing ASTM Type I, Type II, and Type V cements (ASTM Standard Specification for Portland Cement [C 150 ...
RS Ghosh, VM Malhotra
openaire   +1 more source

The degradation of cement superplasticizers in a high alkaline solution

Cement and Concrete Research, 1993
Abstract Commercial cement superplasticizers (SMF and SNF) were treated with 1M KOH solutions for up to 20 days. The chemical changes were characterized by chemical analysis, IR spectroscopy and thermal analysis techniques. After several hours of the preparation, the alkaline solution precipitated SMF and the precipitation ended in 12 days. More than
Yılmaz, Veysel T., Odabaşoğlu, Mustafa, Icbudak, H, Olmez, H   +3 more
openaire   +2 more sources

Effect of superplasticizers on the hydration of cement

Cement and Concrete Research, 1992
Abstract Hydration of Portland Cement in the presence of two different types of superplasticizers, namely Melment and Lomar-D, was studied by using different experimental techniques. Both of the superplasticizers increase the workability and reduce the water content. Melment increases the compressive strength whereas Lomar-D decreases it.
N.B. Singh, Reetika Sarvahi, N.P. Singh
openaire   +1 more source

Superplasticized Microcement Grouts

SP-173: Fifth CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete, 1997
This paper examines the rheological and mechanical behavior of superplasticized microcement grouts to be used for the consolidation of porous systems (e.g. sand deposits, masonry walls of historical buildings). Five micro cements were used: they differed in chemical composition of the clinker, type of mineral addition (natural pozzolan or silica fume),
openaire   +1 more source

Interaction of Superplasticizers with C3A: Understanding the Superplasticizer Compatibility with Cement

Journal of Materials in Civil Engineering, 2023
Xuping Ji, Tinghong Pan, Wenhao Zhao, Jianzhong Liu, Jianfang Sha, Fangyu Han   +5 more
openaire   +1 more source

Polymer Physics and Superplasticizers

SP-262: Ninth ACI International Conference on Superplasticizers and Other Chemical Admixtures, 2009
This paper describes how the increased performance of polycarboxylate superplasticizers is generally explained by the steric hindrance they are intended to develop between cement particles. In fact, direct evidence of this is relatively scarce. The only direct measurements to date have been made by atomic force microscopy on model surfaces of magnesium
openaire   +1 more source

ENHANCING THE COMPATIBILITY OF SUPERPLASTICIZERS WITH CEMENTS

2005
Extreme performances of concrete are required nowadays. Very low water cement ratio to meet the requirements of strength and exposure conditions but, at the same time, long workability retention to meet the requirement of transportation and delivery of high quality concrete are needed.
R Magarotto, F Moratti, N Zeminian
openaire   +1 more source

Performance of concretes produced with superplasticizer

Journal of Applied Polymer Science, 2006
AbstractNowadays, additive chemical substances are used in the production of high‐performance concrete composites. These additives increase the fresh workability of concrete by decreasing the water/cement (W/C) ratio. The aim of this study was to examine the effects of water‐soluble polymers on concrete performance.
F. M. Kılınçkale, G. G. Doǧan
openaire   +1 more source