Results 41 to 50 of about 805,927 (209)

Effect of silica fume additions on the hydration behaviour of calcium aluminates [PDF]

, 1997
In the recent refractory castables technology, the calcium aluminate cement is being replaced in increasing proportion by very fine matrix components, such as silica fume and colloidal alumina.
Fumo, Daniel A., Segadães, Ana M.
core  

Application of titanium gypsum as raw materials in cement-based self-leveling mortars

Case Studies in Construction Materials, 2023
There are studies on titanium gypsum (TG) as a cement retarder, cementing material, or the production of lightweight wall materials and roadbed materials, but the application of TG is still limited, the utilization of TG is in the stage of exploration ...
Guangzhou Wang, Hongya Zong, Zhen Zhang, Junxiang Sun, Fuhong Wang, Yongrui Feng, Shifeng Huang, Qinfei Li   +7 more
doaj   +1 more source

Foamed Concrete Sealing Materials for Coal Seam Gas Drainage Boreholes: A Review

Safety Science and Technology, EarlyView.
This study investigates the sealing performance of foamed concrete in gas drainage boreholes. By comparing leakage pathways (a, c) with sealed systems (b, d), the research demonstrates how foamed concrete effectively fills mining‐induced fractures and resists deformation.
Jiaxing Zou, Erlei Su, Huanchun Liu, Xiangjun Chen, Lin Wang, Haidong Chen, Lin Li   +6 more
wiley   +1 more source

Valorização de fonte alternativa de sulfato de cálcio para a produção de argamassas autonivelantes [PDF]

, 2013
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Civil, Florianópolis, 2013A argamassa autonivelante é um material de baixa viscosidade constituído por aglomerante, areia, água e ...
Schaefer, Cecília Ogliari
core  

Limestone reaction in calcium aluminate cement–calcium sulfate systems [PDF]

This paper reports a study of ternary blends composed of calcium aluminate cement, calcium sulfate hemihydrate and limestone. Compressive strength tests and hydration kinetics were studied as a function of limestone and calcium sulfate content. The phase
Bizzozero, Julien, Scrivener, Karen
core   +2 more sources

The effect of seawater on the phase assemblage of hydrated cement paste: A study on PC, CAC and CSA

Developments in the Built Environment, 2023
The present study investigates the effect of seawater on hydration of Portland cement (PC), calcium aluminate cement (CAC) and calcium sulfoaluminate cement (CSA).
Dawit Moges Tadesse, Jongmin Jeon, Suhan Kim, Solmoi Park   +3 more
doaj   +1 more source

Mechanical, rheological, and durability performances of GGBS‐based concrete for potential application to prestressed structures

Structural Concrete, EarlyView.
Abstract Ground granulated blast‐furnace slag (GGBS) is a widely used clinker substitute in concrete, recognized for its potential to significantly reduce environmental impacts. However, its application in prestressed concrete remains limited in several countries, mainly due to concerns regarding early‐age mechanical performance and long‐term ...
D. Rolando Baldiviezo, Leonardo Todisco, Cristina Argiz, Carmen Andrade, Amparo Moragues, Jaime C. Gálvez, Hugo Corres   +6 more
wiley   +1 more source

Optimization of mix proportion of super-early-strength cement grouting material and experimental study on its working performance

Ain Shams Engineering Journal
This paper investigates the effect of a novel super-early-strength cement grout composite on water leakage in the shield section of metro tunnels in operation.
Xiaokai Niu, He Wang, Zhitian Xie, Wei Song, Mingxing Li, Chentao Xu   +5 more
doaj   +1 more source

Templating effect of alginate and related biopolymers as hydration accelerators for calcium alumina cement - A mechanistic study

Materials & Design, 2020
In earlier publications it has been demonstrated that alginate and similarly structured biopolymers unexpectedly accelerate the hydration of calcium alumina cement. Here, this effect is investigated by applying 27Al MAS NMR spectroscopy and XRD technique
Alexander Engbert, Johann Plank
doaj   +1 more source

Influence of calcium sulphoaluminoferrite on the cement stone structure [PDF]

E3S Web of Conferences, 2020
Usually to obtain expansive cements sulphoaluminate clinker or mix aluminate clinker with calcium sulphates (gypsum, hemihydrate, anhydrate) are used. This paper deals with the composition and properties of solid solution of calcium sulphoaluminoferrite.
Samchenko Svetlana, Zorin Dmitriy
doaj   +1 more source