Results 101 to 110 of about 8,189 (252)

Comparative study of retention of fiber-reinforced post at middle and cervical one thirds of root canal cemented by polycarboxylate and zinc phosphate cements measured at different storage times

Journal of Baghdad College of Dentistry, 2014
Background: The purpose of this study was to compare regional bond strength at middle and cervical thirds of the root canal among glass fiber-reinforced composite (FRC) endodontic posts cemented with different cements, using the push-out test to ...
Saad Zabar
doaj  

Development of an injectable grout for concrete repair and strengthening [PDF]

, 2013
This paper deals with the coupled effect of temperature and silica fume addition on rheological, mechanical behaviour and porosity of grouts based on CEMI 42.5R, proportioned with a polycarboxylate-based high range water reducer.
Brás, Ana, Chastre, Carlos, Gião, Rita, Lucio, Valter   +3 more
core   +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

Supply chain disruptions : managing risks vs. managing crises [PDF]

, 2007
Thesis (M. Eng. in Logistics)--Massachusetts Institute of Technology, Engineering Systems Division, 2007.This electronic version was submitted by the student author.
Chang Zen-Lee M, Lee, Garrett J. (Garrett James)   +1 more
core  

Study on rheological, adsorption and hydration properties of cement slurries incorporated with EPEG-based polycarboxylate superplasticizers

Frontiers in Materials
A series of polycarboxylate superplasticizers (PCEs) with different side-chain densities, main chain polymerization degrees, and side-chain lengths were designed and synthesized using a novel highly active ethylene glycol mono vinyl ether polyethylene ...
Yunhui Fang, Yunhui Fang, Yunhui Fang, Zhaopeng Wang, Dongming Yan, Huazhen Lai, Xiuxing Ma, Junying Lai, Yi Liu, Lina Zhong, Zhanhua Chen, Xiaofang Zhang, Zhijun Lin, Dongye Wang   +13 more
doaj   +1 more source

Combined effect of sodium sulphate and superplasticizer on the hydration of fly ash blended Portland® cement

Materials Research, 2010
Combined effect of polycarboxylate type superplasticizer and sodium sulphate on the hydration of fly ash blended Portland® cement has been studied by using different techniques.
Mukesh Kumar, Narendra Pratap Singh, Sanjay Kumar Singh, Nakshatra Bahadur Singh   +3 more
doaj   +1 more source

Self-desiccation and self-desiccation shrinkage of silica fume-cement pastes [PDF]

, 2017
Self-desiccation is one common phenomenon of high-performance cementitious materials, which are characterized by low water/binder (w/b) ratio and high mineral admixture incorporation. As a consequence, large magnitude of self-desiccation shrinkage, a key
De Schutter, Geert, Liu, Yang, Ye, Guang
core   +1 more source

Strength and Durability of Concrete with Blast Furnace Slag [PDF]

, 2013
The properties of concrete using blast furnace as binder and fine aggregate have been investigated in this study. The experiments focus on the properties of concrete such as compressive strength and young's modulus, carbonation, diffusion of chloride ...
AYANO, Toshiki, FUJII, Takashi, HOSOTANI, Kazuyoshi, JARIYATHITIPONG, Paweena   +3 more
core  

Investigating the effect of polycarboxylate-ether based superplasticizer on the microstructure of cement paste during the setting process

, 2022
Weiwei Zhu, Qingge Feng, Qi Luo, Jun Yan, Lu Chun   +4 more
openalex   +1 more source

Influences of chloride immersion on zeta potential and chloride in concentration of cement-based materials [PDF]

, 2015
In this paper, the zeta potential of freshly mixed cement paste and hardened cement pastes, as well as the concentration index, was measured. The influences of chloride concentration in mixing water and slag content on zeta potential of freshly mixed ...
De Schutter, Geert, Hu, Xiang, Shi, Caijun   +2 more
core