2—effects of natural pozzolan on concrete properties

... physical properties 1.7—Uses Chapter 2—Effects of natural pozzolan on concrete properties, p 232.1R-8 2.1 Concrete mixture proportions 2.2 Properties of fresh concrete 2.3 Properties of hardened concrete ... Paulon 1982) CHAPTER 2—EFFECTS OF NATURAL POZZOLAN ON CONCRETE PROPERTIES 2.1 Concrete mixture proportions The most effective method for evaluating the performance of a concrete containing a natural ... study on using natural pozzolans for the purpose of controlling the heat of hydration of concrete and other concrete benefits for mass concrete applications such as large dams Several investigations...

Ngày tải lên: 24/10/2014, 17:44

... Proportions of concretes with RCA in comparison to control 67 concrete Table 3.1 Water Absorption Capacity of Recycled Concrete Aggregates 82 Table 3.2 Particle Density of Recycled Concrete Aggregate ... using conventional natural aggregate concrete (NAC) alone The aim of this study is to compare the engineering properties as well as durability performance of RAC to the conventional concrete ... 5.2 Properties of Recycled Concrete Aggregates 152 5.3 Properties of Recycled Aggregates Concrete 157 CHAPTER CONCLUSIONS AND RECOMMENDATIONS 6.1 Conclusions 163 6.2 Recommendations 166 REFERENCES...

Ngày tải lên: 05/10/2015, 19:06

... these conditions, hence the lack of reformation of POR-PChlide650 Addition of low concentrations of NADPH to PLB aged at pH 7.5 which show only limited structural reorganization, in contrast, ... percentage photoconversion in response to one, two, and four saturating flashes of white light (B) Variation of the wavelength of the absorption maximum of PChlide with NADPH concentration Ó FEBS 2002 ... The effect of the presence of the adenylates on the ability of POR-PChlide640 to undergo photoconversion was checked by comparing the efficiency of photoconversion of PLB samples containing excess...

Ngày tải lên: 22/02/2014, 04:20

... gland and secretion of the hormone melatonin in 1968; this hormone also influences the functions of other glands from direct action on specific areas of the brain (A Summary of Light-Related ... Wilson, D (July 20, 2001) Telephone Conversation 44 Wotton, E.; Barkow, B (February 1983) “An Investigation of the Effects of Windows and Lighting in Offices.” International Daylighting Conference: ... Telephone Conversation with Retail Planning Associates architect Lamb, C (June 28, 2001) Telephone Conversation with owner of Lamb’s Thriftway Lamb, C (July 30, 1998) Telephone Conversation with...

Ngày tải lên: 02/06/2014, 09:22

... level of nitrite concentration will harm to cobia At a pH of to 8, ammonia concentration up to or 5mg/L would not pose a toxicity problem in ponds However, at a pH of 8.5 to 9.5, to 5mg/L of ammonia ... zooplankton at all fish sizes Detritus consisted mainly of scraps of macrophytes and mud, and its contribution to gut content decreased by increasing fish size, while phytoplankton contribution increased ... Percentage composition of zooplankton in stomach of cobia larvae The results of percentage of zooplankton in stomach of cobia larvae are given in the Figure 4.11 30 100% Percentage of planktons (%) 90%...

Ngày tải lên: 22/09/2015, 16:45

... effect of organoclay loading on tensile strength of NR and nanocomposites ENR Figures and show the effect of organoclay loading on stress at 100% elongation (M100) and stress at 300% elongation (M300) ... degradation using the TGA curves in Figures 11 and 12 For ENR and NR gum vulcanisation, two steps of thermal degradation occured at 300°C–400°C The second degradation corresponded to the degradation of ... volatilisation due to the reassembly of the layers on the surface of the polymer Zhang et al.22 reported that in nanocomposites, montmorillonite has excellent barrier properties, prevents the permeation...

Ngày tải lên: 07/08/2014, 14:20

... parameterization of sorption, Journal of Environmental Quality 26 (1997) 49 C.D Tsadilas, T Matsi, N Barbayiannis, D Dimoyiannis, Influence of sewage-sludge application on soil properties and on the ... probably due to the concentration of Zn being higher in the chicken manure than in the composted manure There were no significant effects of biosolids application on concentration of Rev Aq Reg Cd ... a function of biosolids application, except for Pb in the Ha Tay experiment (Table and Fig 3) The NH4NO3-extracted fractions of Cd, Cu, Pb and Zn constituted only a small proportion of the EDTA-extracted...

Ngày tải lên: 05/03/2014, 16:20

... assayed by varying the concentration of Tm in the presence of constant concentration of F-actin and myosin S1 In this condition, Tm inhibits the ATPase activity as its concentration increases [33] ... Mg2+ ATPase was determined in the absence of troponin as a function of tropomyosin concentration, and in the presence of troponin and Ca2+ concentration varying from 10)6 to 10)3 M Inorganic Ó ... than on the position of the mutation in the polypeptide chain, as demonstrated by the biophysical assays Our studies have provided additional contributions to the understanding of the effects of...

Ngày tải lên: 16/03/2014, 18:20

... saturation and saturation magnetization of samples is listed in Tab From the shape of measured M(T) curves, we should approximately suppose that these values correspond to saturation magnetization of ... direction of magnetic moment of A ions and magnetic moment of B1 and B2 ions Comparing MSt and MSe from Tab 2, we could determine the canting angle between magnetic moments of B1 and B2 ions in ... expression [1,2]: E / kT ρ = ρ 0e ρ (5) From Fig we could calculate activation energy Eρ of Ni0.3Zn0.7Fe2O4 ferrite and the result showed to be 0.15 eV which corresponds to electron conductivity of...

Ngày tải lên: 22/03/2014, 11:20

... Eoeun dong, Yuseong-gu, Daejeon 305-333, Republic of Korea 4Department of Semiconductor Engineering, Cheongju University, Cheongju, 360-764, Chungbuk, Korea Authors’ contributions KW conceived ... that the weight ratio of various SZO targets is transformed to each SZO NWs, and demonstrate that the doping control of ZnO NWs is possible by the concentration control of Ag wt.% in targets ... structure because of both low Ea and optimized quantity of substitution function of Ag+ [19] However, stress of lattices structure on both 3SZO and 5SZO NWs is very impressive because a lot of Ag interstitials...

Ngày tải lên: 20/06/2014, 22:20

... values of δγ as a function of NiO content are shown in Table The parameter δγ increased with increasing NiO content, confirming that the addition of NiO promoted the diffuse phase transition of the ... a pronounced diffuseness transition [18-22] The La ions are effective in breaking the long-range order and produce Ti vacancies This breakage of long-range ordering leads to a reduction of the ... to the Ni ions substituting the Ti ions (at the B site) Therefore, substitution of the Ni ions at the B site may result in breaking the long-range ordering, resulting in a reduction of the ferroelectric...

Ngày tải lên: 20/06/2014, 23:20

... dependent on the stand density and LAI Discussion 540 The irregular fructification of beech trees may cause problems in connection with planning and implementation of natural regeneration for beech ... found positive on plot M only J FOR SCI., 54, 2008 (12): 533–544 Fig illustrates the influence of cutting on changes in the species composition of natural regeneration in comparison with the parent ... Evaluation of results collected over 15 years (15 vegetation periods in 1989–2003) of natural beech regeneration on the plots with different densities allows us to decide on the way and extent of...

Ngày tải lên: 07/08/2014, 10:22

... as ventilation with a high concentration of oxygen, the activation of inflammatory mediator systems, colonization by bacteria, suction-induced lesions of the mucous membrane, infections and drugs ... February 2002 Vol No Kondo et al secretion or absorption of water Pulmonary epithelial ion transport systems are important in the modulation of the ionic content and volume of periciliary fluid, ... Abbreviations: AC, assist/control ventilation; AMV, assisted mechanical ventilation; CMV, controlled mechanical ventilation; COPD, chronic obstructive pulmonary disease; FiO2, fraction of inspired oxygen;...

Ngày tải lên: 12/08/2014, 18:21

... Settlement of up to 7mm was measured at the edge of the building The success of the operation was due to the good tunnelling control where volume loss was only 0.4% In Hong Kong, construction of the ... clearance of 3.4m Figure 2.9 shows the relative location of tunnels and pile foundations With the use of mitigation measure such as grout injection and good control of tunnel construction which ... effect of multiple-tunnel advancement on nearby pile foundation 2.5 Concluding remarks A review of the published literature on the effects of tunnel construction on nearby pile foundation has...

Ngày tải lên: 15/09/2015, 17:09

... Half saturation constant (mgN/l) Fig Maximum specific growth of heterotrophs Phase 5.00 40 Days of Operation 0 20 40 60 80 Days of Operation Fig Half saturation concentration Ks of heterotrophs ... 40 50 Days of operation nitrosomonas nitrobacter 60 70 Fig Half saturation concentration Ks of nitrifiers 60 80 Nitrobacter Fig Maximum specific growth of nitrifiers Half saturation constant (mgCOD/l) ... mixed-population biofilm into functions of ammonium oxidizing and COD oxidizing fractions Convergence tolerance was set to 0.0005 and the secant minimization algorithm was selected as the optimization routine...

Ngày tải lên: 05/09/2013, 08:40

... The Effects of Childhood Stress on Health Across the Lifespan is a publication of the National Center for Injury Prevention and Control of the Centers for Disease Control and Prevention Centers ... dramatic rise in hormone levels Types of Stress Following are descriptions of the three types of stress that The National Scientific Council on the Developing Child has identified based on available ... making it one of the largest studies of its kind Each participant completed a questionnaire that asked for detailed information on their past history of abuse, neglect, and family dysfunction as...

Ngày tải lên: 12/02/2014, 19:20

... sponsored by the United States Army iii iv The Effects of Equipment Age on Spare Part Costs: A Study of M1 Tanks For more information on RAND Arroyo Center, contact the Director of Operations ... Tanks, Santa Monica, CA: RAND Corporation, MR-1789-A, 2004, p 27 (age-failure relationship) and p 48 (high-cost parts) Congressional Budget Office, The Effects of Aging on the Costs of Operating ... excerpts of congressional testimony Rick Eden and John Dumond provided insightful commentary We especially thank the careful reviews of this document provided by Ellen Pint of RAND and Raymond “Chip”...

Ngày tải lên: 17/02/2014, 22:20

... Comparison of Battalion Failure Distributions and Poisson Distribution in 2nd Infantry Division B.6 Comparison of Battalion Failure Distributions and Poisson Distribution in 3rd Infantry Division ... (Location 1, 180 days) B.1 Illustration of Failure Data Overdispersion B.2 Comparison of Battalion Failure Distributions and Poisson Distribution in 1st Cavalry Division B.3 Comparison of Battalion ... Battalion Failure Distributions and Poisson Distribution in 4th Infantry Division B.4 Comparison of Battalion Failure Distributions and Poisson Distribution in 1st Infantry and 1st Armor Divisions:...

Ngày tải lên: 18/02/2014, 17:20

... million tons of CO2e reductions through enhanced forest management By 2050, agricultural lands could supply 465 million tons of CO2e reductions and existing forests supply an additional 178 million ... Regional Considerations Using a regional model of the U.S agricultural sector, Lewandrowski et al examined the potential for carbon sequestration at various carbon prices At a carbon price of ... up to 101 million tons of CO2e could be sequestered through tillage practices and up to 488 million tons through afforestation (147 million tons from cropland and 342 million tons from grassland)...

Ngày tải lên: 21/02/2014, 01:20