Select the correct statement from the following Select one: O A. Admixtures increase the cost of the concrete mixes significantly. B. Additives are functional additions blended in limited amounts into a hydraulic cement during manufacture C. Admixtures are usually added before mixing OD. Additives can be used to overcome certain emergencies during concreting operations.

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: We require a mix with a mean 28-day compressive strength of 28 MPa. The slump is selected to be 40…

A:

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: Amswer the following questions: Part I (True or False) 1) Aggregates having high absorption value…

A: 1) False - Aggregate having low absorption ratio are preferable for concrete so that water- cement…

Q: what is the main chemical reaction that during the production and hydration process of cement.

A: The main chemical reaction during the production and hydration process of cement is "Hydration of…

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: () attributes the most to the strength of hardened cement paste.

A: This question is from Concrete Technology.

Q: Design a concrete mix according to the following conditions:   Design Specifications  Concrete…

A: All the design calculations and specifications are based on ASCE codes.   For 50mm slump and 37.5mm…

Q: The recommended dosage on a viscosity modifying admixture is 5 fl oz/cwt. The proportions of the…

A: Recommended dosage on a viscosity modifying admixture = 5 fl oz/cwt. Coarse aggregate = 1800 lbFine…

Q: Assume that you are going to make a three cubic yard (3yd³) of concrete. Create your own mix design…

A: The design strength = 3.8 ksiThe slump should = 3 to 4 in.The maximum size of aggregate = 2 inUnit…

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…

Hydrogen Energy

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