From experimental results, it is found that the ratio of funnel speed to flow area of mortar with a fixed amount of super plasticizer is almost constant, independent of the water powder ratio. The higher the amount of super plasticizer the lower is the ratio of funnel speed to flow area. This ratio is proposed as an index for the effect of super plasticizer on mortar flowability and viscosity from the viewpoint of achieving self-compatibility. This index is useful to evaluate the amount of super plasticizer for proper flowability and viscosity of mortar. Sukumar and Nagamani (2010) reported the relation between superplasticizer dosage and fly ash content existed in SCC mixes with 8-52% fly ash, slump flow of 742-793 mm and w/p ratio of 0.31-0.34.
How deep must the cable be buried? It must be 42 inches under the top of the pavement. 6. What are the exact detailed compaction requirements as listed in the manual provided by the city for restoration of any surface that is trenched? The backfill material needs to be compacted in lifts of loose depth that does not exceeding 8 inches and compacted to at least 95% of Standard Proctor Density at optimum moisture content, +/- two percentage points, as determined by ASTM D698 or provide the City with suitable advanced technology compaction testing methods, as approved by the Director 7.
Hydrogen bonding linked the borax solution and PVA together. Introduction This lab focused on producing “Ghostbuster Slime,” made from mixing borax solution (sodium Borate) with polyvinyl alcohol (PVA) solution. The polymer was created as a result from cross-linking the two solutions. A polymer is a substance containing a molecular structure built by a very large number of similar units, or monomers, linked together. The linkage of polymers is a determining factor in the properties of a substance, such as solubility, elasticity, and viscosity.
Chemical Reactions Formal Lab Report By Mason Ely Background We did this lab on Chemical Reactions and to study and learn about the law of conservation of mass. Lab stations tested each method, synthesis, double displacement, decomposition, and single displacement, to study the law of conservation of mass. The law of conservation of mass is the law that states that matter cannot be created nor destroyed without human mistake in a chemical reaction. In station A we tested the chemical reaction of synthesis; synthesis is the chemical reaction where two or more elements or compounds form one compound product. In station B we tested the chemical reaction of decomposition; decomposition is the chemical reaction where the chemical compound is separated into elements or simpler compounds.
Experiment 8: Separation of a Mixture of Solids Purpose: The purpose of this lab is to separate the solids mixture containing the iron, sand, benzoic acid and salt. These solids were separated based on the unique properties of different solids such as variation in the magnetic properties and variation is solubility such as ranging from completely insoluble to completely soluble. Procedure: The necessary materials required for this lab procedures was obtained from the labpaq: solids mixture, weighing dish, and digital weighing scale. Each and every solid separated in this lab experiment was weighed using the weighing dish and digital weighing scale. From the solids mixture, the iron filling were separated by using the property of iron fillings that they were attracted towards the magnet.
We’re specifically looking into how much product will be created after conducting experiments with various different concentrations of Iodine and Zinc. One of the things we tested for was the production of a “white solid” which acted as our precipitate. Another key element we kept an eye out for was excess zinc, which showed us how much of the zinc was reacted. During our experiment we colleged exactly the amounts we needed for our group, no decimal point less! We also collected an accurate amount of acidified water, used to start the reaction.
Pre Lab Objective: The purpose of this lab is to obtain the mass and volume of two different metal samples, to graph data, to obtain the slope of graphed data and to display a best fit curve of experimental data in order to graphically determine the density of each metal Background: Understanding the relationship that exists between a substance’s mass and its volume. This relationship is expressed by the physical property called density. (D = M/V). In order to determine the volume of solids, a technique called water displacement is used. A fixed amount of water is added to a graduated cylinder and the volume of water is recorded.
My project will be pouring a concrete slabs or patios. I will first prepare the site for the slab. Then I will build strong level forms around the area of it. After that I will build the base and pack it. Then I will straighten the slab with a steel bar.
LO1 Understand the properties and use of construction materials 1.1 describe the properties of construction materials 1.2 evaluate the properties and uses of construction materials 1.3 justify the specification of construction materials regarding their performance in use LO2 Understand the structural behaviour of construction materials 2.1 discuss the effects of loading structural materials 2.2 compare the behaviour of timber, steel and reinforced concrete structural members under load LO3 Be able to apply scientific principles to the design and use of buildings 3.1 relate scientific principles to human comfort levels 3.2 discuss the methods used to integrate building services into the overall building design 3.3 determine the thermal performance of buildings regarding heat gains and heat losses LO4 Be able to solve scientific problems in construction and the built environment 4.1 perform scientific experiments associated with construction science and materials 4.2 derive conclusions from the results of the scientific experiments To gain a Merit it is necessary to satisfy all the learning outcomes and at least one characteristic from each Merit Criteria M1 – M3: Merit Descriptors | Indicative Characteristics
To resist sagging or hogging from occurring in a concrete beam the weakest points of the beam will be reinforced with steel. In this drawing you can see that hogging is occurring in the beam In this drawing you can see that the load acting upon the bean is causing it to sag Load The beam would be reinforced with steel bars to prevent these deflections from occurring. The reinforcement would occur in the beams weakest points and this would usually be the