Results 41 to 50 of about 5,625 (250)
Molecules, 2023 In this work, a novel AaBAb-type triblock polycarboxylate superplasticizers (PCEs) with well defined molecular structures were designed and synthesized, firstly, by reversible addition-fragmentation chain transfer (RAFT) polymerization, to explore the ...
Guangming Guo +5 more
doaj +1 more source
Tailored setting times with high compressive strengths in bassanite calcium sulfoaluminate eco-cements [PDF]
, 2016 This work deals with the hydration of a calcium sulfoaluminate (CSA) eco-cement prepared with bassanite and different additives (type and content) at a fixed water/CSA ratio of 0.5.
Cabeza-Diaz, Aurelio +6 more
core +2 more sources
MedžiagotyraIn 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
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 +3 more
doaj +1 more source
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 +6 more
doaj +1 more source
Effect of Ultrafine Metakaolin on the Properties of Mortar and Concrete
Crystals, 2021 This study investigated the influence of ultrafine metakaolin replacing cement as a cementitious material on the properties of concrete and mortar. Two substitution levels of ultrafine metakaolin (9% and 15% by mass) were chosen.
Shengli Zhang +3 more
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Research on the performance of recycled concrete powder self-leveling mortar based on orthogonal experiment [PDF]
E3S Web of Conferences, 2020 Waste concrete in the construction waste is reprocessed into concrete sand and powder [1]. Recycled concrete sand with a particle size between 0.15 and 0.25mm partially replaces natural sand, and the recycled concrete powder with a particle size less ...
Lin Yuezhong +2 more
doaj +1 more source
Effect of admixtures on the yield stresses of cement pastes under high hydrostatic pressures [PDF]
, 2016 When cement-based materials are transported at a construction site, they undergo high pressures during the pumping process. The rheological properties of the materials under such high pressures are unknown, and estimating the workability of the materials
Kim, Jae Hong +2 more
core +2 more sources
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 +5 more
openaire +1 more source
Performance of Concrete Made with Superplasticizer from Modified Black Liquor and Polycarboxylate
BioResources, 2014 A new kind of retarding polycarboxylate superplasticizer (M20S80) was prepared through the modification of black liquor and polycarboxylate superplasticizer (S) through an Fe2+-H2O2 reaction system.
Tailong Zhang +3 more
doaj +1 more source