آخرین محصولات
Effects of Fly Ash on the properties of Alkali Activated Slag …
This master thesis presents the effects of fly ash on the properties of alkali activated slag concrete, com-monly referred as Geopolymer concrete (GPC). Cement manufacturer are major producers of CO 2 which negatively affects the environment. Due to the increased construction activities and environmental con-
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Potential applications of geopolymer concrete in
1. Introduction. The construction industry is an integral part of every economy [1].Consequentially, the construction industry is responsible for the generation of high volumes of wastes and the emission of significant greenhouse gasses (GHGs) into the environment [2], [3].In the construction industry, cement-based materials such as …
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Carbonation Curing of Slag-Cement Concrete for Binding …
DOI: 10.1061/ (ASCE)MT.1943-5533.0000018 Authors: Sean Monkman Yixin Shao Abstract and Figures Early age carbonation curing of slag-cement concrete was investigated to assess the feasibility of...
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Stress
Boukendakdji, M. "Mechanical properties and long-term deformation of slag cement concrete", PhD thesis, Dept. of Civil Engineering, University of Leeds, 1989, 290 pp. Properties and uses of ...
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(PDF) An introduction to geopolymer concrete
GGBS is a glassy, granular, non metallic material consisting essentially of silicates and aluminates of calcium and other bases. The term 'geopolymer' was first introduced by Davidovits in 1978 to ...
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Hydration of slag cement
Hydration of slag cement - Theory, Modelling and Application. Wei Chen. Research output: Thesis › PhD Thesis - Research UT, graduation UT. 250 Downloads …
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DURABILITY OF BLAST-FURNACE SLAG CEMENT CONCRETE …
M. Anwar, "Use of rice husk ash as part of cement content in concrete," PhD Thesis, Cairo university, Faculty of Engineering 1996. [44] JIS A1138. Method of making test sample of concrete in the laboratory. ... G. G. Litvan, and A. Meyer, "Carbonation of granulated blast-furnace slag cement concrete during twenty years of field exposure ...
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Influence of slag blended cement concrete on chloride diffusion …
@article{osti_516881, title = {Influence of slag blended cement concrete on chloride diffusion rate}, author = {Dehghanian, C and Arjemandi, M}, abstractNote = {This research was conducted to investigate the effect of 0 to 30% partial replacement of cement by slag on chloride diffusion rate in concrete. Concretes with 0 to 30% slag were used …
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(PDF) Topics in cement and concrete research
Topics in cement and concrete research. Khurram Azhar. The present paper addresses several topics in regard to the sustainable design and use of concrete. First, major features concerning the sustainable aspects of the material concrete are summarised. Then the major constituent, from an environmental point of view, cement is discussed in ...
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(PDF) B T Benn PhD Thesis
High-quality cement clinker with compressive strength of 60.4MPa was produced by utilizing limestone, blast furnace slag, steel slag and fly ash as raw materials after curing 28 days. Read more ...
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(PDF) Early age behaviour and cracking risk of …
Concrete Early age behaviour and cracking risk of concretes containing GGBS Thesis for: Doctor of Philosophy (Ph.D.) Advisor: Prof. …
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Materials Science and Engineering
He is also a member of ACI Committees 130 Sustainability, 221 Aggregates, 233 Slag Cement, 239 Ultra-high Performance Concrete, 240 Natural Pozzolans, and 242 Alternative Cements. Dr. Sutter is a registered Professional Engineer in Michigan.
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University of Twente Research Information
Preface This thesis comprises the work I have done during the past four years in The Netherlands. Doing a PhD is challenging for me both scientifically and in respect to the dail
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Sean MONKMAN | BSc, MSc, PhD, PEng | Research profile
PhD Student; Education. September 2004 - January 2009 ... Early age carbonation curing of slag-cement concrete was investigated to assess the feasibility of binding CO2 in slag-cement building ...
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How to assess the hydration of slag cement concretes?
The aim of the present experimental study is to characterize the hydration process of concretes with different slag contents, to quantify the evolutions of their …
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Study on Composition, Structure and Properties of
Reactive powder concrete (RPC) is a high mechanical properties and excellent durability of high performance cement-based composite materials, very broad application prospects. Paper exist in the research and application of the current RPC material costs, large energy consumption of the outstanding problems, the use of steel slag powder, ultrafine fly ash …
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Thesis for the Degree of Doctor of Philosophy Recycling of concrete in
water/cement ratio of the parent concrete such that a stronger parent concrete leads to denser ad hered mortar [21, 27, 37]. Such that the differenc e be tween reference aggregate
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Autogenous Deformation and Internal Curing of Concrete
In this thesis, autogenous deformation of cement pastes, Normal Weight Concrete (NWC), and Lightweight Aggregate Concrete (LWAC) were measured. Both Portland and Blast Furnace Slag (BFS) cement ...
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R. Douglas Hooton
Student Thesis Title ... Hooton, R.D., "Thirty Five Years' Experience with Slag Cement Concrete in North America," Nordic Concrete Research 11/2012 (Proceedings, Workshop on Durability Aspects of Fly ash and Slag in Concrete, Oslo Feb. 2012) pp. 179-190. ... Transport and Fixation of Matter in Cement-Based Materials, PhD Course, Danish ...
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Thesis for the Degree of Doctor of Philosophy Recycling …
This thesis investigates crushed concrete aggregates (CCA) as aggregate replacements in an industrial reference concrete recipe. Overall CCA replacement …
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Mechanical properties of reactive powder concrete containing high
Xi et al. [38] showed that the strength of slag cement also decreases with prolonged autoclaving. However, with a small addition of silica fume, the cement strength increases and the pore structure is densified [38]. For 175 °C hydrothermal curing, the main hydrates of PC-slag cement are α-C–S–H, C–S–H(I) and probably some CAS 2 H 4.
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SciELO
"A study on durability of blast furnace slag cement concrete mixed with metakaolin-based artificial pozzolan in actual marine environment", In: Third International Conference on ... Effects of pozzolanic materials on mechanical properties and chloride diffusivity of concrete, Thesis (PhD), Istanbul Technical University, Institute of ...
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University of Arkansas, Fayetteville …
This paper focuses on the findings from testing of Class S(AE) concrete, short for Class S air entrained, as it is the primary concrete used in the construction of bridge decks within …
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Performance of self-compacting concrete made with coarse and …
This paper reports the effects of coarse and fine recycled concrete aggregates (RCA) on fresh and hardened properties of self-compacting concrete (SCC) containing ground granulated blast-furnace slag (GGBFS) as cement replacement. For this purpose, three SCC mixes groups, were produced at a constant water to binder ratio of …
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(PDF) The use of steel slag in concrete
This paper presents the results of a research dealing with the use of unstable steel slag as a substitute for natural aggregate in the production of concrete. …
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Effect of blast-furnace slag as cement replacement on …
This PhD thesis focuses on the use of blast-furnace slag (BFS) as cement replacing material. Blast-furnace slag, a by-product of the steel production, obtains latent …
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How to assess the hydration of slag cement concretes?
The hydration products of slag cement concretes are similar to that of the Portland cement concrete, but their quantities vary. −. Based on the measurement of the chemically bound water and the liberated heat value, the evolution of the hydration degree can be predicted for slag cement concretes using the Three Parameter Equation.
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A review on alkaline activation: new analytical perspectives
That hypothesis has become consolidated and has served as a basis for developing a new type of binders, initially called "alkaline cements". The present paper reviews the most significant theoretical interpretations of the role played by alkalis in the formation of the "stony" structure of cement.
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The effect of pozzolans and slag on the expansion of mortars …
ASTM standard 25×25×280-mm mortar prisms were cast at a water–cementitious ratio of 0.48 and a sand–cement ratio of 2.75. A standard 20–30 coarse quartz sand meeting the requirements of ASTM C 778 was used to prepare the mortars because it was reported to produce greater expansion in heat-cured mortars than graded …
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Hydration of slag cement : theory, modeling and application
It also provides higher ultimate compressive strength of concrete [8] [9][10]. Slag cement provides highly workable concrete, which reduces the water-cement (w/c) ratio of concrete resulting in ...
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