Results 21 to 30 of about 16,391 (279)

Comparative evaluation of shear bond strength and microleakage of tricalcium silicate-based restorative material and radioopaque posterior glass ionomer restorative cement in primary and permanent teeth: An in vitro study

Journal of Indian Society of Pedodontics and Preventive Dentistry, 2014
Background: Restoration of carious primary molars is still a major concern while treating the young children that too in deep carious lesion which extends below the cemento-enamel junction (CEJ) where pulp protection and achieving adequate marginal seal ...
Vignesh Guptha Raju, Nilaya Reddy Venumbaka, Jayanthi Mungara, Poornima Vijayakumar, Sakthivel Rajendran, Arun Elangovan   +5 more
doaj   +1 more source

A Review: Progress in Molecular Dynamics Simulation of Portland Cement (Geopolymer)—Based Composites and the Interface between These Matrices and Reinforced Material

Buildings, 2023
Molecular dynamics (MD) is an important method for studying the molecular and atomic scale of cement (geopolymer)-based composites which provides an effective method for the optimal design of cementitious materials.
Li Li, Yujie Wei, Qi Feng, Fang Liu, Bin Liu, Beichen Pu   +5 more
doaj   +1 more source

Comparative Study of Soil Grouting with Cement Slurry and Cement-Sodium Silicate Slurry

Advances in Materials Science and Engineering, 2018
Cement slurry and cement-sodium silicate slurry are most widely applied for soil grouting reinforcement project. The viscosity change of cement slurry is negligible during grouting period and presumed to be time independent, while the viscosity of cement-
Mingting Zhu, Qingsong Zhang, Xiao Zhang, Bing Hui   +3 more
doaj   +1 more source

Experimental study of water-soluble vegetable gum-modified cement-sodium silicate plugging materials

Yantu gongcheng xuebao, 2020
Karst areas are well developed in Southwest China, and karst hydrodynamic disasters have a great impact on underground engineering construction. In order to solve the problems of low slurry retention rate of cement-sodium silicate plugging materials, the
LI Zhao-feng , GAO Yi-fan , ZHANG Jian , QI Yan-hai , WANG Yan-sheng , LIU Chao
doaj   +1 more source

Preparation and Properties of Double Liquid Grouting Materials (DLGMs) Used for the Regenerated Roof of a Coal Mine

Buildings, 2023
Double liquid grouting materials (DLGMs) are composed of slurry A and slurry B. In response to the need for sustainable development, there is currently a focus on improving the utilization rate of resources. In this paper, industrial solid waste fly ash,
Aiguo Wang, Zheng Li, Peng Liu, Kaiwei Liu, Guofeng Yu, Qun Zheng, Yunchun Han, Haiyan Xu, Daosheng Sun   +8 more
doaj   +1 more source

Direct pulp capping of primary molars using a novel fast-setting calcium silicate cement: a randomized clinical trial with 12-month follow-up

Biomaterial Investigations in Dentistry, 2019
Objective: Novel fast-setting calcium silicate cement with fluoride (Protooth) has been developed for potential applications in tooth crowns. The aim of this study was to evaluate the success rate of direct pulp capping in primary molars using two-layer ...
Ali Vafaei, Niloofar Azima, Leila Erfanparast, Henrik Løvschall, Bahram Ranjkesh   +4 more
doaj   +1 more source

Metal‐free Hydrogen Generation from Seawater and Silicon Waste: A Circular Approach

Angewandte Chemie, EarlyView.
Hydrogen was rapidly generated directly from untreated seawater and polymeric Si waste without any transition metal catalyst. The in situ generated polymeric cross‐linked Si resin was completely depolymerized under mild conditions into chloro‐silane monomers.
Mustapha Hamdaoui, Anja Steinmaurer, Philipp Jernej, Daniel Legenstein, Peter Hartmann, Adrian Daniel Boese, Katalin Barta   +6 more
wiley   +2 more sources

Study on the effect of alkali activated slag cement solidification on dredging sediment [PDF]

E3S Web of Conferences
The massive dredging of silt and soft soil has caused serious environmental problems. Carrying out the resource utilization of silt can turn waste into treasure, improve the utilization rate of solid waste, and achieve the goal of energy conservation ...
Xu Yanping, Li An, Fan Zhihong
doaj   +1 more source

Molecular dynamics study on axial mechanical properties of calcium silicate hydrate

Materials Research Express, 2020
The axial mechanical properties of calcium silicate hydrate during uniaxial tension or stress have been investigated by molecular dynamic simulations.
Jianzhang Huang, Yue Fan, Xiaowei Ouyang, Qiang Han   +3 more
doaj   +1 more source

Influence of Casing Surface Roughness on Cement Plug Integrity

Shiyou jixie, 2021
Evaluation of cement plug integrity is important for successful abandonment operations. Cement plug integrity is influenced by cement filling, but the effect of casing surface roughness on cement plug sealing has not been studied. Norwegian University of
Li Xiaoming, Li Lianzhong
doaj