Results 41 to 50 of about 9,303 (212)

Performance and Compatibility of Phosphonate-Based Superplasticizers for Concrete

Buildings, 2017
The paper deals with the effectiveness of an innovative phosphonate-based superplasticizer (PNH) for ready mixed concrete. Concrete specimens were manufactured by considering a constant initial workability, equal to 220 mm slump at the end of the mixing ...
Luigi Coppola, Sergio Lorenzi, Patricia Kara, Stefano Garlati   +3 more
doaj   +1 more source

Performance Analysis of Tunnel Water Plugging Engineering Slurry Based on Polycarboxylate Superplasticizer

Medžiagotyra
In response to the low efficiency of water plugging slurry in high temperature tunnel engineering, this research explores the optimization configuration of tunnel water plugging slurry.
Daiqiang ZHU, Qiao HE, Hui YANG
doaj   +1 more source

Evaluations of All-in-One, Polycarboxylate-Based Superplasticizer with Viscosity Modifying Agents for the Application of Normal-Strength, High-Fluidity Concrete

Applied Sciences, 2021
High fluidity concrete exhibits an excellent self-compacting property. However, the application of typical high-fluidity concrete is limited in the normal strength range (18~35 MPa) due to the large amount of binder.
Tae-Woong Kong, Hyun-Min Yang, Han-Seung Lee, Chang-Bok Yoon   +3 more
doaj   +1 more source

Preparation and Cement Fluidity of Slow-Release Polycarboxylate-Type Superplasticizer

, 2011
High performance polycarboxylate-type superplasticizer (PCSP) was synthesized with acrylic acid (AA), polyethylene glycol allyl ether (APEG) and one monomer of methyl acrylate (MA), methacrylate acid (MAA), acrylamide (AM), and ethyleneglycol ...
Xia Lv, Cheng Bing Yu, Wen Ying Qi
core   +1 more source

PENGARUH PENAMBAHAN STEEL FIBER DAN SUPERPLASTICIZER POLYCARBOXYLATE TERHADAP KUAT TEKAN SELF COMPACTING CONCRETE K-400 [PDF]

, 2021
Concrete construction is still the main choice in Indonesia because it has many advantages. On the other hand, rapid development and complex construction mean that concrete works must have good quality and high workability.
WAHYU NASHRULLAH, NIM. 112017030
core  

Physical Origin of Temperature Induced Activation Energy Switching in Electrically Conductive Cement

Advanced Science, EarlyView.
The temperature‐induced Arrhenius activation energy switching phenomenon of electrical conduction in electrically conductive cement originates from structural degradation within the biphasic ionic‐electronic conduction architecture and shows percolation‐governed characteristics: pore network opening dominates the low‐percolation regime with downward ...
Jiacheng Zhang, Xinyuan Ke, Andrew Heath, Richard J. Ball, Jiawei Xie, Jinchen Fan, Guisheng Li, Kevin Paine   +7 more
wiley   +1 more source

Study on the Permeability of Modified Bentonite Slurry in Landfill

Advances in Materials Science and Engineering, 2020
The impermeability of cutoff wall is one of the most important factors affecting the life of landfill. Hence, we used sodium carboxymethyl cellulose to modify bentonite and developed a modified bentonite-cement-fly ash antiseepage slurry with a low ...
Zenan Zhang, Guozhong Dai, Yanmin Sheng
doaj   +1 more source

Synthesis and properties of hyperbranched solid polycarboxylate superplasticizer

Journal of Physics: Conference Series, 2022
Abstract In this paper, a novel strategy for the preparation of solid polycarboxylate superplasticizers (PC-3) with hyperbranched structures was proposed. PC-3 was synthesized by bulk polymerization method under a redox initiation system.
Maoqian Yang, Guisheng Cai, Jie Zhang, Yongsheng Liu, Tongwei Lu, Fanjun Meng   +5 more
openaire   +1 more source

Behavior of manufactured sand and recycled coarse aggregate concrete‐filled steel tubular stub columns with circular section

Structural Concrete, EarlyView.
Abstract Accelerated urbanization has intensified environmental concerns due to excessive natural resource consumption and construction waste generation. Circular concrete‐filled steel tube (CFST) columns incorporating manufactured sand recycled coarse aggregate (MS‐RCA) concrete have emerged as an innovative composite element offering notable ...
Minsheng Guan, Qi Chen, Gang Wang, Aiguo Xiong, Ying Wang, Le Li, Anne W. M. Ng, Qing Quan Liang   +7 more
wiley   +1 more source

Experimental study on preparation and optimization of high-performance cement grouts mixed with chemical additives for capsule grouting technology

Journal of Materials Research and Technology, 2022
With the development of underground space, underground construction inevitably affects the safety of surrounding structures. Capsule grouting technology (CGT) is proposed to protect adjacent structures from the impact of underground construction.
Gang Zheng, Jianyou Huang, Yu Diao, Aoyang Ma, Yiming Su, Chenlei Jiao, Hao Chen   +6 more
doaj   +1 more source