Efflorescence in cement is caused due to an excess of Iron oxide K20 and Na203 Silica Alumina Alkalis
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- -In the cement, the quickest compound that reacts with water is Tricalcium silicate Dicalcium silicate Tricalcium aluminate O Tetra calcium alumina ferrite -The compressive strength of cement mortar increases with increasing its initial setting time final setting time fineness of cement consistency of standard paste none of these+ 8 O Shapes ink to Shape The constituent compound in Portland cement which reacts immediately with water, and also sets earliest, is (a) Tricalcium silicate (b) Dicalcium silicate (c) Tricalcium aluminate (d) Tetracalcium aluminoferrite9 - Which of the following is the most positive effect of C3A, one of the cement components.A) Fast reactionB) High heat of hydrationC) Provide corrosion resistanceD) Low heat of hydrationE) Formation of ettringite
- V Hydration of cement is due to chemical action of water with Tetra calcium Aluminoferrite Tricalcium aluminate and Tricalcium alumino ferrite 0 Gypsum 0 Tricalcium silicate and Dicalcium silicateThe tricalcium aluminate compound present in cement Lütfen birini seçin: ΟΑΑlof therm O B. does not make significant contribution to the ultimate strength of cement. O C. is responsible for highest heat of evolution O D. characteristically fast react with water O E. provides weak resistance against sulphate attackWhich of the following statements is correct? A) Pozzolans react with Calcium Silicate Hydrate (C-S-H) to form Calcium Hydroxide (C-H) B) Pozzolans react with the by-product of cement hydration to produce a denser concrete C) Use of pozzolans in a mix generally improves the durability and strength of the concrete D) b and c
- 1%99 |I. A:PY Efflorescence in cement is caused due to an excess of Iron oxide K20 and Na203 Silica Alumina Alkalis Inert material of a cement concrete mix, is Cement Coarse aggregate Fine aggregate Water None of these Dage 3. of 5 IIShow solution please use ASD24 - Which of the following is the common effect of pozzolan on concrete.A) Decrease in hydration temperatureB) Decrease in permeabilityC) AllD) Saving cementE) Decrease in sweating
- In pressure grouting technique, the slurry contains * O PFA O microsilica all of the mentioned O cementThe setting time of cement with the of Water/cement .(w/c) ratio Increase, increase Decrease, increase Increase, decrease Decrease, decrease i need clear ans and solve very very fast in 20 min and thank you | DYBALA During bad storage of cement the alkalis in the cement react with CO2 to form alkali carbonates, which they react with Ca(OH)2 liberated by the hydrolysis of ---- to form C3S, CaCO3 Tricalcium silicate, Calcium Carbonate Dicalcium silicate, CaCO3 Calcium Carbonate, C3SAt saturated surface dry (SSD) an aggregate's moisture condition is equal to its: air dry absorption capacity oven dry maximum absorbed volume