Potential use of clay brick waste powder and ceramic waste aggregate in mortar

Ceramic-based wastes generated from different industrial activities have increasingly been reused as construction material incorporated into concrete. In general, these wastes just replace common concrete aggregates such as sand and gravel. In the present work, waste from clay brick industries composted of kaolinite minerals were for the first time evaluated for their potential to be reused as the pozzolan constituent of a cement for structural concrete. Initial standard testes revealed that the clay ceramic waste (CCW) displays high pozzolanicity. Concrete was then produced with 10 and 20 wt.% of CCW mixed with ordinary Portland cement (OPC) as its pozzolan constituent. Compression strength of these concretes and of pure OPC as a control sample were determined in standard tests after 14 and 28 days of curing. In addition, the corresponding density, water absorption, capillarity and percentage of voids were measured together with the evaluation of microstructural indices by scanning electron microscopy. The initial tests confirmed that the CCW is indeed an effective pozzolanic potential due to a chemical effect by reacting with CH to generate C–S–H. Moreover, the technological results proved that CCW might effectively replace the pozzolan cement constituent for structural concrete.

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The potential use of cement–asbestos waste in the ceramic masses destined for sintered wall clay brick manufacture

Ceramics International ◽

10.1016/j.ceramint.2014.04.037 ◽

2014 ◽

Vol 40 (8) ◽

pp. 11995-12002 ◽

Cited By ~ 8

Author(s):

R. Kusiorowski ◽

T. Zaremba ◽

J. Piotrowski

Keyword(s):

Clay Brick ◽

Potential Use

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Portland blended cements: demolition ceramic waste management

Materiales de Construcción ◽

10.3989/mc.2017.00516 ◽

2017 ◽

Vol 67 (325) ◽

pp. 114 ◽

Cited By ~ 2

Author(s):

M. A. Trezza ◽

S. Zito ◽

A. Tironi ◽

E. F. Irassar ◽

V. F. Rahhal

Keyword(s):

Compressive Strength ◽

Cementitious Materials ◽

Pozzolanic Activity ◽

Supplementary Cementitious Materials ◽

Early Age ◽

Blended Cements ◽

Ceramic Waste ◽

Materials Used ◽

Potential Use

Demolition ceramic wastes (DCWs) were investigated in order to determine their potential use as supplementary cementitious materials in Portland Blended Cements (PBCs). For this purpose, three ceramic wastes were investigated. After characterization of the materials used, the effect of ceramic waste replacement (8, 24 and 40% by mass) was analyzed. Pozzolanic activity, hydration progress, workability and compressive strength were determined at 2, 7 and 28 days. The results showed that the ground wastes behave as filler at an early age, but as hydration progresses, the pozzolanic activity of ceramic waste contributes to the strength requirement.

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The growth of mica polytypes as studied by conventional and high-resolution TEM

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100074690 ◽

1983 ◽

Vol 41 ◽

pp. 174-177

Author(s):

A. Baronnet ◽

M. Amouric

Keyword(s):

Water Pressure ◽

Point Of View ◽

Temperature Fields ◽

Natural Occurrence ◽

Growth Mechanisms ◽

Long Period ◽

High Resolution Tem ◽

Layer Stacking ◽

Experimental Works ◽

Potential Use

The origin of mica polytypes has long been a challenging problem for crystal- lographers, mineralogists and petrologists. From the petrological point of view, interest in this field arose from the potential use of layer stacking data to furnish further informations about equilibrium and/or kinetic conditions prevailing during the crystallization of the widespread mica-bearing rocks. From the compilation of previous experimental works dealing with the occurrence domains of the various mica "polymorphs" (1Mr, 1M, 2M1, 2M2 and 3T) within water-pressure vs temperature fields, it became clear that most of these modifications should be considered as metastable for a fixed mica species. Furthermore, the natural occurrence of long-period (or complex) polytypes could not be accounted for by phase considerations. This highlighted the need of a more detailed kinetic approach of the problem and, in particular, of the role growth mechanisms of basal faces could play in this crystallographic phenomenon.

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An atomic-resolution microscope study of Al contracts on GaAs

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100145005 ◽

1986 ◽

Vol 44 ◽

pp. 726-727

Author(s):

Z. Liliental-Weber ◽

C. Nelson ◽

R. Ludeke ◽

R. Gronsky ◽

J. Washburn

Keyword(s):

High Speed ◽

Schottky Contacts ◽

Detailed Knowledge ◽

The Past ◽

Semiconductor Interfaces ◽

Deposited Metal ◽

Microwave Applications ◽

Free Interfaces ◽

Potential Use

The properties of metal/semiconductor interfaces have received considerable attention over the past few years, and the Al/GaAs system is of special interest because of its potential use in high-speed logic integrated optics, and microwave applications. For such materials a detailed knowledge of the geometric and electronic structure of the interface is fundamental to an understanding of the electrical properties of the contact. It is well known that the properties of Schottky contacts are established within a few atomic layers of the deposited metal. Therefore surface contamination can play a significant role. A method for fabricating contamination-free interfaces is absolutely necessary for reproducible properties, and molecularbeam epitaxy (MBE) offers such advantages for in-situ metal deposition under UHV conditions

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The potential use of short chain peptides in parenteral nutrition

Clinical Nutrition ◽

10.1016/s0261-5614(85)80013-3 ◽

1985 ◽

Vol 4 ◽

pp. 116-123 ◽

Cited By ~ 3

Author(s):

P STEHLE ◽

S ALBERS ◽

I AMBERGER ◽

P PFAENDER ◽

P FURST

Keyword(s):

Parenteral Nutrition ◽

Short Chain ◽

Potential Use

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Assessment of Helichrysum sp. extracts on in vitro keratinocyte proliferation and differentiation: potential use of plants for improved wound healing

10.1055/s-0037-1607159 ◽

2017 ◽

Cited By ~ 1

Author(s):

N Grčić ◽

S Esch ◽

A Hensel ◽

ACP Dias

Keyword(s):

Wound Healing ◽

Differentiation Potential ◽

Keratinocyte Proliferation ◽

Proliferation And Differentiation ◽

Potential Use

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Instant 99mTc Compounds

Nuklearmedizin ◽

10.1055/s-0038-1624749 ◽

1971 ◽

Vol 10 (03) ◽

pp. 245-251 ◽

Cited By ~ 1

Author(s):

P. Richards ◽

W. C. Eckelman

Keyword(s):

Physical Properties ◽

High Purity ◽

Analytical Techniques ◽

Full Potential ◽

Labeled Compounds ◽

Ph Adjustment ◽

One Step ◽

Stannous Ion ◽

99Mtc Radiopharmaceuticals ◽

Potential Use

SummaryThe full potential use of technetium has not been achieved despite its ideal physical properties, dosimetry and availability because of the complex preparations required for 99mTc radiopharmaceuticals. One of the goals of our work is to develop techniques for the preparation of high-purity 99mTc compounds which can be easily prepared, ideally by adding pertechnetate to a prepared solution.The use of stannous ion as reducing agent for technetium makes it possible to obtain such one-step, high-purity products. All non-radioactive components can be premixed in a single vial before addition of the radioactive pertechnetate. No final pH adjustment, further chemical manipulation or purification is required.Procedures for two instantly labeled compounds have been developed to date: 99mTc DTPA and 99mTc HSA. The 99mTc DTPA is prepared by adding pertechnetate to a previously prepared solution of stannous ion and CaNa3 DTPA which has been stored at pH 4. The 99mTc HSA is prepared by adding pertechnetate to a solution of stannous ion and HSA. The parametric variations and analytical techniques involved in formulating these procedures are described. It appears that development of kits for other biologically interesting compounds may be possible using similar procedures.

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Treatment and secondary prevention of venous thromboembolism in cancer patients

Onkologische Welt ◽

10.1055/s-0038-1630173 ◽

2012 ◽

Vol 03 (03) ◽

pp. 121-125

Author(s):

I. Pabinger ◽

C. Ay

Keyword(s):

Clinical Trials ◽

Venous Thromboembolism ◽

Cancer Patients ◽

Oral Anticoagulants ◽

Factor Xa ◽

New Oral Anticoagulants ◽

Phase Iii ◽

Patients With Cancer ◽

Potential Use

SummaryCancer is a major and independent risk factor of venous thromboembolism (VTE). In clinical practice, a high number of VTE events occurs in patients with cancer, and treatment of cancerassociated VTE differs in several aspects from treatment of VTE in the general population. However, treatment in cancer patients remains a major challenge, as the risk of recurrence of VTE as well as the risk of major bleeding during anticoagulation is substantially higher in patients with cancer than in those without cancer. In several clinical trials, different anticoagulants and regimens have been investigated for treatment of acute VTE and secondary prophylaxis in cancer patients to prevent recurrence. Based on the results of these trials, anticoagulant therapy with low-molecular-weight heparins (LMWH) has become the treatment of choice in cancer patients with acute VTE in the initial period and for extended and long-term anticoagulation for 3-6 months. New oral anticoagulants directly inhibiting thrombin or factor Xa, have been developed in the past decade and studied in large phase III clinical trials. Results from currently completed trials are promising and indicate their potential use for treatment of VTE. However, the role of the new oral thrombin and factor Xa inhibitors for VTE treatment in cancer patients still has to be clarified in further studies specifically focusing on cancer-associated VTE. This brief review will summarize the current strategies of initial and long-term VTE treatment in patients with cancer and discuss the potential use of the new oral anticoagulants.

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