removal and reuse of hardened concrete

... Water and Environment Technology, Vol. 7, No. 2, 2009 - 135 - Improvement of nutrient removal and phosphorus recovery in the anaerobic/oxic/anoxic process combined with sludge ozonation and phosphorus ... shown in Fig. 4. During the operation, about 70% of the phosphorus in the sludge was solubilized by ozonation, and a large part of...

Ngày tải lên: 05/09/2013, 09:38

... Fine screening (d ≤ 0,05 mm) Reuse Cooling Treating and Grinding VNU Journal of Science, Natural Sciences and Technology 24 (2008) 280-286 280 Study on reuse of heavy metal rich sludge ... treatment and utilization of the heavy metal rich sludge has not sufficiently been studied and implemented. Objective of the study is to treat heavy m...

Ngày tải lên: 12/02/2014, 17:20

... Learning Correlations between Linguistic Indicators and Semantic Constraints: Reuse of Context-Dependent Descriptions of Entities Dragomir R. Radev Department of Computer Science Columbia University ... the auto- matically generated text and the semantics of the description itself. We present our work in the framework of the more general concept of reu...

Ngày tải lên: 17/03/2014, 07:20

... compounds, and color removal. They also have been used for treatment of waters containing organic chemicals. The mechanism for organic chemical removal by oxidation is the conversion of the organic chemical ... LIST OF ORGANIC CHEMICALS FOUND IN NJ GROUND WATERS…… 63 APPENDIX C TREATABILITY OF ORGANIC CHEMICALS FOUND IN NJ GROUND WATERS……………………………………………...

Ngày tải lên: 28/03/2014, 19:20

... hi ca thép và bê tơng. θ : chỉ tiêu gò chặt cuûa tieát din ng thép nhi bê tông. fc: cng đ chu nén tính toán ca b tông. fa: cng đ chu nén, chu kéo tính toán ca ng thép. 1 ϕ : ... lc ca ng thép nhi bê tông chu nén đúng tâm. Aa, Ac : din tích mt ct ngang ng thép và lõi bê tông. Ia, Ic : mômen quán tính ca tit din ng thép...

Ngày tải lên: 04/04/2014, 11:16

... unprepared plots after clear-felling. Original article Effects of sylvicultural practices on nutrient status in a Pinus radiata plantation: Nutrient export by tree removal and nutrient dynamics in ... Lundmark-Thelin A. ,Johansson M.B., Influenceof me- chanical site preparation on decomposition and nutrient dyna- Effects of sylvicultural pr...

Ngày tải lên: 08/08/2014, 14:21

... 6:15 http://www.ro-journal.com/content/6/1/15 Page 10 of 13 RESEARC H Open Access A specific inhibitor of protein kinase CK2 delays gamma-H2Ax foci removal and reduces clonogenic survival of irradiated mammalian ... protein kinase CK2 delays gamma-H2Ax foci removal and reduces clonogenic survival of irradiated mammalian cells....

Ngày tải lên: 09/08/2014, 09:20

... of data, and manuscript drafting. GB performed study conception and design, statistical analysis and interpretation of data, and revi- sion of manuscript. All authors read and approved the final manuscript. Acknowledgements The ... Mariella Maio 1 , Enrica Ferretti 1 , Annalisa Longobardo 1 , Raffaele Potenza 1 , Luca Rivalta 1 , Paola Selvaggi 1 , Marco Vergano 1 and Gu...

Ngày tải lên: 13/08/2014, 03:20

... references American Concrete Institute 307-69 Specification for the Design and Construction of Reinforced Concrete Chimneys 307-88 Standard Practice for the Design and Construc- tion of Cast-in-Place Reinforced ... Reinforced Concrete Chimneys 318 Building Code Requirements for Structural Concrete 505-54 Standard Specification for the Design and Con- struct...

Ngày tải lên: 24/10/2014, 15:45

... 313R-1 This Commentary presents some of the considerations and assumptions of ACI Committee 313 in developing the provisions of the Standard Practice for Design and Construction of Concrete Silos and Stacking ... and curing Chapter 4 Design, p. 313R-4 R4.1—Notation R4.2—General Commentary on Standard Practice for Design and Construction of...

Ngày tải lên: 24/10/2014, 15:45

... 307-1 This standard gives material, construction, and design requirements for cast-in-place and precast reinforced concrete chimneys. It sets forth mini- mum loadings for design and contains ... p. 307-15 Design and Construction of Reinforced Concrete Chimneys (ACI 307-98) Reported by ACI Committee 307 ACI 307-98 David J. Bird Chairman Victor A. Bochicchio...

Ngày tải lên: 24/10/2014, 15:46

... supports 2.10—Special details for seismic design of frames, joints, walls, diaphragms, and two-way slabs 2.11—Corrosion-resistant coatings for reinforcing steel Details and Detailing of Concrete Reinforcement (ACI ... location and length of lap splices; and 2. Type and location of mechanical and welded splices of reinforcing steel. 1.2—Drawing standards 1....

Ngày tải lên: 24/10/2014, 15:46

... 5) modulus of elasticity of concrete modulus of elasticity of concrete at transfer of stress modulus of elasticity of prestressing strand modulus of elasticity of steel flexural stiffness of compression ... 343 on Concrete Bridge Design, provide currently acceptable guidelinesfor the analysis and design of reinforced, prestressed, and partially prestres...

Ngày tải lên: 24/10/2014, 16:04

... of concrete and degree of removal, p. 555R-2 2.1—Introduction 2.2—Assessment of concrete structures for complete or partial demolition 2.3—Types and degrees of removal 2.4—Types of concrete and ... Denmark, and other RILEM publications provide additional information. These publications include: Demoli- tion and Reuse of Concrete and Masonry (Kasai 1988), D...

Ngày tải lên: 24/10/2014, 17:26

... freshly mixed and hardened concretes by use of either epoxy or latex adhesives. The re- quirements and procedures of this guide consist of: ã Evaluation of the hardened concrete to determine the proper ... 503.6R-2 Chapter 5—Use of epoxy adhesives, p. 503.6R-3 5.1—Selection of the epoxy adhesive 5.2—Mixing of the epoxy adhesive 5.3 Applicati...

Ngày tải lên: 24/10/2014, 22:11