Results 71 to 80 of about 830,178 (181)

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

open access: yes
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

Preparation, physical-chemical characterisation and cytocompatibility of calcium carbonate cements [PDF]

open access: yes, 2006
The feasibility of calcium carbonate cements involving the recrystallisation of metastable calcium carbonate varieties has been demonstrated. Calcium carbonate cement compositions presented in this paper can be prepared straightforwardly by simply mixing
Bareille, Reine   +3 more
core   +1 more source

Assessing compatibility of self-healing nutrients for microbially induced calcium carbonate precipitation in calcium aluminate cement

open access: yesDevelopments in the Built Environment
Microcrack formation in concrete poses a risk of durability degradation and ultimate failure of the structure. Calcium aluminate cements (CAC) are susceptible to significant early age microcrack formation due to their rapid setting behavior.
Daniel Tariku   +3 more
doaj   +1 more source

Effect of B2O3 on Volume Stability and Strength of Corundum-based Castables

open access: yesHigh Temperature Materials and Processes, 2017
Calcium aluminate cements (CAC) with 0.21 wt% B2O3 and without B2O3 were used as binders of corundum-based castables. The properties of the castables with and without B2O3 after heat treatment at 110 °C, 1,100 °C and 1,450 °C were investigated, with ...
Zhang Chuanyin   +4 more
doaj   +1 more source

Phosphate modification of calcium aluminate cement to enhance stability for immobilisation of metallic wastes [PDF]

open access: yes, 2014
Cementing systems based on calcium aluminate cement (CAC) have been studied as an alternative cement matrix for the encapsulation of intermediate level wastes (ILWs) arising from the nuclear industry.
Chavda, M.A.   +2 more
core   +1 more source

The corrosion rate and microstructure of Portland cement and calcium aluminate cement-based concrete mixtures in outfall sewers: A comparative study

open access: yes
This paper presents a comparative study on the corrosion rate and microstructural characteristics of Portland cement (PC) and calcium aluminate cement (CAC)-based concrete mixtures subjected to microbially-induced sulphuric acid (biogenic H2SO4) attack ...
Kiliswa, Moses W.   +2 more
core   +1 more source

Conduction calorimetric studies of ternary binders based on Portland cement, calcium aluminate cement and calcium sulphate

open access: yes, 2013
Different binders of Portland cement, calcium aluminate cement and calcium sulphate (PC/CAC/CS) have been investigated to determinate the in¿uence the CAC and CS amount in the reactions mechanism.
Torrens Martín, David   +2 more
core   +1 more source

Calcium aluminate cement concrete: durablllty and conversión. A fresh look at an old subject

open access: yesMateriales de Construccion, 1992
This paper re-examines the relationship between durability and conversion of calcium aluminate cement concretes, CACC. Conversion is a natural and inevitable process whereby these materials reach a stable mature condition.
C. M. George, R. G. J. Montgomery
doaj   +1 more source

Enhancing the performance of calcium aluminate cement using Vitamin-C as a multifunctional admixture

open access: yesCase Studies in Construction Materials
Vitamin-C (VC) is a water-soluble vitamin abundantly found in various plants. In this work, VC is explored as a green and multifunctional admixture for enhancing the performance of calcium aluminate cement (CAC).
Yingyao Qin, Maimai Qiao, Chunning Pei
doaj   +1 more source

Potential of Saudi Arabian bauxite to produce low-carbon cement

open access: yesCement
To produce calcium aluminate cement (CAC), bauxites are usually fused with lime/limestone at high temperature (1600 °C). At this temperature, the bauxite´s hydrates of alumina break down - dehydroxylation - and combine with calcium forming monocalcium ...
S. Pavia, O. Alelweet
doaj   +1 more source

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