Results 171 to 180 of about 9,303 (212)

Mechanism of intercalation of polycarboxylate superplasticizer into montmorillonite

Applied Clay Science, 2016
Abstract It is well known that polycarboxylate superplasticizer (PC) has a poor clay tolerance, due to huge adsorption amount caused by clay minerals, especially by montmorillonite (Mt). The aim of the paper is to study the mechanism of the interaction of Mt and PC.
Hongbo Tan, Benqing Gu, Baoguo Ma, Xin Li, Chaoliang Lin, Xiangguo Li   +5 more
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Research on the Grading Effect of Polycarboxylate Superplasticizer

Applied Mechanics and Materials, 2013
In this paper, polycarboxylate superplasticizer (PC) was separated by ultrafiltration to investigate function on dispersion of various portions of PC. It is found there is a grading effect on the dispersion and adsorption of polycarboxylate superplasticizer, through fluidity and adsorption experiments.
Zhi Kun Li, Jia Hui Peng
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Research on Polycarboxylic Superplasticizer with Slump Retaining

Advanced Materials Research, 2014
Adopting methyl allyl polyoxyethylene ether (TPEG) and unsaturated carboxylic acid throught REDOX system synthetize the polycarboxylic slump retaining admixture. Researching the impact factors of temperature,reaction time, acid alcohol ratio, dosage of initiator and molecular regulator to the polycarboxylic superplasticizer with slump retaining.In the ...
Guo Sheng Liao, Tao Ai, Yu Xiao
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The Characterization and Application of Polycarboxylate as a Superplasticizer in Concrete

Advanced Materials Research, 2013
Polycarboxylate was synthesized and the structure of the superplasticizer was characterized by FTIR. The water reducing effect of the synthesized copolymers was studied in terms of stirring time, the surface tension of superplasticizer and the adsorption on cement particles of superplasticizier.
Xiang Yin Mo, Chen Jie Yu, Xiao San Feng, Ying Jie Jing   +3 more
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The compatibility of polycarboxylate-type superplasticizers with cement

Journal of Wuhan University of Technology-Mater. Sci. Ed., 2005
Four polycarboxylate-type (PC) superplasticizers of different functional groups were used; their dispersing and retaining behaviors were analyzed through ZETA potential measurement, mini-slump test of cement paste and performance test of concrete. The experimental results show that the dispersing and flow-retaining ability of PC was determined by two ...
Li Chongzhi, Wang Dongmin, Song Shaomin, Chen Jialong   +3 more
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Impact of the microstructure of polycarboxylate superplasticizers on the dispersion of graphene

Carbon, 2020
Abstract Graphene can not only toughen cement-based materials, but also give them sensing ability. However, the uniform dispersion of graphene in a cement matrix is the major problem in the fabrication process. Four polycarboxylate superplasticizers (PCEs) with different charge densities and side-chain lengths were synthesized and the effects of ...
WANGQin, ZHANDafu, QIGuodong, WANGYue, ZHENGHaiyu   +4 more
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Characterization of Polycarboxylate‐Ether Based Superplasticizer on Cement Clinker Surfaces

Journal of the American Ceramic Society, 2012
The application of Ordinary Portland Cement ( OPC ) based binder is commonly improved by the addition of rheology modifying agents, i.e. superplasticizers. In this work the interaction between polycarboxylate‐ether based superplasticizers ( PCE s) and ...
Ferrari L., Bernard L., Deschner F., Kaufmann J., Winnefeld F., Plank J.   +5 more
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Synthesis of new polyether polycarboxylate superplasticizer

Journal of Wuhan University of Technology-Mater. Sci. Ed., 2010
The effects of various factors on the synthesis process and the performances of product, including batch feeding way and the dosage of the radical initiator, the system concentration, the reaction temperature and the reaction time were discussed. A kind of polycarboxylate superplasticizer with allyl alcohol polyethylene glycol, maleic anhydride and ...
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Research on synthesis and action mechanism of polycarboxylate superplasticizer

Frontiers of Chemistry in China, 2007
The relationship between the structure and performance of polycarboxylate superplasticizer was analyzed. The respective functions of the structure units of the main and branched chains were discussed. The progress of synthesis and molecular structure design and synthesis of polycarboxylate superplasticizer were reviewed according to the difference in ...
Hui Wu, Huiling Guo, Jiaheng Lei, Rongguo Zhang, Yong Liu   +4 more
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Synthesis and Characterization of Comb-Like Polycarboxylate Superplasticizer

Applied Mechanics and Materials, 2012
Polycarboxylate superplasticizers have become the superstar for high-performance concrete. Because their molecular structure can be easily manipulated by impart new materials to acquire new performance. In this paper, the synthetic parameters adjusting experiment is utilized to get the optimal synthetic formulations.
Yun Hui Fang, Zhuo Jun Jiang, Yu Liang Ke, Xiao Lu Chen, Fei Long Zheng, Zi Dong Lan, Meng Qin Guan, Guang Xing Lai, Tian Xing Lin, Miao Miao Gui   +9 more
openaire   +1 more source