Effect of newly developed lignosulphonate superplasticizer on properties of cement pastes and mortars

... EFFECT OF A NEWLY DEVELOPED LIGNOSULPHONATE SUPERPLASTICIZER ON PROPERTIES OF CEMENT PASTES AND MORTARS SUN DAO JUN (B Eng (Hons.), NUS) A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF ENGINEERING ... Chapter Fig 4-1 Effect of SO3 content on heat of cement hydration 143 Fig 4-2 Rate of heat evolution of cement pastes (w/c = 0.34) 143 Fig 4-3 Rate...

Ngày tải lên: 05/10/2015, 19:03

... diameter collecting ring, cm2, and t time during which bleeding occurs at a uniform rate, s 9.2 Bleeding Capacity—Calculate the bleeding capacity as follows: Tests on Mortars 8.1 Batch—The mortar ... shall consist of 930 g of cement and 2325 g of graded sand as specified in Specification C 778 The amount of mixing water, measured in grams, shall be such as to produce a flow...

Ngày tải lên: 10/07/2014, 23:20

... mixer for 15 s and during this time scrape down into the batch any paste that may have collected on sides of the bowl C 305 the batch any mortar that may have collected on the side of the bowl; ... the bowl shall be quickly scraped down into the batch with the scraper prior to remixing NOTE 4—Caution: The clearances between the paddle and the bowl specified in this practice are sui...

Ngày tải lên: 10/07/2014, 23:20

... excitons, phonons, etc.) in nanocone is a special case, since diameter of nanocone is a monotonous function of height, leading to gradual change of bandgap Graded bandgap structure has an effect on ... formation of nanocones on the irradiated surface of a semiconductor by selective laser heating of the top layer with following mechanical plastic deformation...

Ngày tải lên: 20/06/2014, 22:20

... effect of compost forms (ground and pelletized) on soil chemical properties; and 2) investigate the effect of ground and pelletized compost on plant growth and macronutrient accumulation in plants ... ground compost This research examined the effect of ground and pelletized cassava and swine manure compost on soil properties and plant growth T...

Ngày tải lên: 05/09/2013, 09:08

... al Effect of ionic strength and oxidation on PhyAsr A A R258 R258 C252 OCS 252 B B R258 R258 OCS252 C252 Fig (A) Conformation of the P-loop at low ionic strength in the absence of ligand The P-loop ... Structure of PhyAsr under low and high ionic strength conditions To examine the structural effect of ionic strength on the P-loop, X...

Ngày tải lên: 18/02/2014, 18:20

... IMAGEQUANT software, and depurination was calculated by relating the amounts of the small aniline-fragment and 5.8S rRNA and expressing values as a percentage Reassociation and quantification of ... carried out for each individual atom Data collection and refinement statistics are given in Table Assay of the N-glycosidase activity of ricin A chain variants The...

Ngày tải lên: 19/02/2014, 12:20

... bold b The type of mutation: natural polymorphism (P), mutation appearing only in drug resistance (R, see Fig 1) If two mutations occurred and one of them was occurring only in drug resistance, the ... Stock solutions and dilutions were made in distilled water and the peptide concentrations were determined by amino-acid analysis Construction and purification of HIV-1...

Ngày tải lên: 21/02/2014, 03:20

... controls Protective effect of dietary curcumin, capsaicin and their combination on iron -induced LDL oxidation in vivo and copper -induced LDL oxidation in vitro Oxidation of LDL observed in iron(II) ... Manjunatha and K Srinivasan Protective effect of dietary curcumin, capsaicin and their combination on iron -induced LDL oxidation in viv...

Ngày tải lên: 08/03/2014, 08:20

... Effect of cations and G-quartets on recombination P Barros et al studies on the influence of salts on the recombination process have analyzed how monovalent cations could affect the fidelity of ... involved in the generation of duplications in the presence of a G-quadruplex According to this, the generation of duplications is explained by replicatio...

Ngày tải lên: 29/03/2014, 23:20

... Secoli et al.: Effect of visual distraction and auditory feedback on patient effort during robot-assisted movement training after stroke Journal of NeuroEngineering and Rehabilitation 2011 8:21 ... their nonparetic arm ("Stroke-N”), and control participants without stroke ("Control”) Task A: Baseline tracking without distractor or sound feedback Distract...

Ngày tải lên: 19/06/2014, 08:20

... translational migration and micromotion components are presented as 'total translational migration' and 'total translational micromotion' Similarly, the terms 'total rotational migration' and ... total translational migration The average absolute rotational migration was smaller than 0.04° in the sagittal and frontal planes, but much larger in the transverse plane (rotation ab...

Ngày tải lên: 20/06/2014, 04:20

... Risk factor analysis for early femoral failure in metal-onmetal hip resurfacing arthroplasty: the effect of bone density and body mass index Thomas P Gross, Fei Liu§ Midlands Orthopaedics, ... that a body mass index ≥35kg/m2 increases the complexity of exposing the hip and accurately placing the 13 component, therefore increasing the ri...

Ngày tải lên: 20/06/2014, 07:20

... solutions: chloride, carbonate and phosphate and the combination of them by adding about 0.34 g of ZANDI into a 500 ml of the aqueous solution The accumulated amount of 2,4-D released into the ... Fig Release profiles of 2,4-D from the interlamellae of ZANDI, the nanohybrid into various aqueous solution systems containing single, binary and tern...

Ngày tải lên: 22/06/2014, 00:20

... effect of gibberellic acid and ethephon on overcoming beechnut dormancy and stimulation of beechnut germination Materials and methods Seeds Three beechnut seedlots with a moisture content of 8.6–9.0% ... mg·l–1 of ethephon or 40 mg·l –1 of GA 3, – dormant seeds treated with 100 mg·l–1 of ethephon or 300 mg·l–1 of GA3, – dormant seeds treated with 120 mg·l...

Ngày tải lên: 07/08/2014, 10:21