From the knowledge of the effects of GGBS, PFA and microsilica, indicate whether their inclusion to provide a concrete of equivalent 28 day strength, is likely to enhance or reduce resistance to each of the processes stated below: i. Alkali Silica Reaction (ASR) in concrete ii. Chloride ingress in concrete (not corrosion)

Q: ASTM C127 is the Standard Test Method for Density, Relative Density (Specific Gravity), and…

A: Given data in question  ASTM C127 For density,  Relative density and absorption capacity To find out…

Q: Which compound of cement is responsible for strength of cement? a. Magnesium oxide b. Silica  c.…

A: Magnesium oxide It imparts strength and soundness to cement. Cement become unsound if it is in…

Q: Rate of Tricalcium silicate (C3S) is higher in Type III cement.

A: Given statement: Rate of Tricalcium silicate (C3S) is higher in type III cement.   Tricalcium…

Q: Problems: Identify the following as Element (E), Compound (C), Homogeneous Mix (HOM) or…

A:

Q: What is the amount of Moist Coarse Aggregate? b. What is the amount of SSD Fine Aggregate? c.…

A: Solution: Givendata  coarse aggregate = 1160 kg/m3  fine aggregate = 599 kg/m3 water content = 148…

Q: Hydration of cement is exothermic process that generates heat. The table below shows the heat…

A: When cement, water, compounds, and additives are mixed together, a significant increase in…

Q: In the manufacture of Portland cement, gypsum is added to the clinker and they are pulverised…

A: Solution- a)  i) Gypsum is a long-lasting admixture. ii) The addition of gypsum to the clinker…

Q: Hydration of cement is due to chemical action of water with * Gypsum Tricalcium aluminate and…

A: Option D is correct...

Q: What are the two main reasons that steel corrodes inside reinforced concrete? ingress of chlorides…

A: Two major factors which cause corrosion of rebars in concrete structures are carbonation and ingress…

Q: The oxide compositions of two Portland cements are given in Table 1. a) Calculate the potential…

A:

Q: The raw materials used in Portland Cement production are:

A: Portland cement: Portland cement is a calcium silicate cement made by firing a well-homogenized and…

Q: Which of the following statements is correct? A) Pozzolans react with Calcium Silicate Hydrate…

A: Pozzolans are silicate-based compounds that combine with the calcium hydroxide produced whenever…

Q: Depending on the properties of the different chemicals and their relative composition, identify the…

A: Tri Calcium Aluminate (3CaO.Al2O3) or C3A is responsible for the flash setting of the cement and…

Q: The quality of aggregate packing affects: a) Cement use b) Slump c) Corrosion d) Early cracking

A: Aggregate plays important role in mixing of cement. Type of aggregate and grading of aggregate…

Q: At saturated surface dry (SSD) an aggregate's moisture condition is equal to its: air dry…

A: When aggregate particles are completely having dry surfaces, this situation is called the saturated…

Q: Which of the following material is/are used as an accelerator’s additive for cement? a. Sodium…

A: answer: a. Sodium chloride  c. Calcium chloride EXPLANATION :-  ACCELERATOR:- -These are the type of…

Q: building construction where strength required with age. * Rapid Hardening Cement Low Heat Cement…

A: 1. Explanation : Rapid Hardening Cement : This type of cement gives very good strength in lesser…

Temperature effects on atom arrangements

Atoms are the smallest units of matter. Atoms can be subdivided into electrons, protons, and several other subatomic particles. Groups or combinations of atoms form molecules that primarily decide the property and behavior of materials. These molecules have the property to attract other molecules based on the valence electrons in the atoms' outermost orbit. An orderly arrangement of molecules is known as crystal structure, which forms the fundamental topic of concern in materials science and engineering. The arrangement of molecules is different for different materials and hence, each material exhibits different lattice arrangements. The lattice arrangements are functions of external loads, deformations, and temperature. On experiencing high temperatures or low temperatures, the behavior of the lattice arrangement of a material change.