Recent questions tagged construction-materials-and-management

If the fineness modulus of a sample of fine aggregates is $4.3$, the mean size of the particles in the sample is between$150 \: \mu m$ and $300 \: \mu m$$300 \: \mu m$ an...

The characteristic compressive strength of concrete required in a project is $25 \: MPa$ and the standard deviation in the observed compressive strength expected at site ...

As per Indian standards for bricks, minimum acceptable compressive strength of any class of burnt clay bricks in dry state is$10.0 \text{ MPa}$$7.5 \text{ MPa}$$5.0 \text...

A construction project consists of twelve activities. The estimated duration (in days) required to complete each of the activities along with the corresponding network di...

The activity-on-arrow network of activities for a construction project is shown in the figure. The durations (expressed in days) of the activities are mentioned below in ...

Bull’s trench kiln is used in the manufacturing oflimecementbricksnone of these

The compound which is largely responsible for initial setting and early strength gain of Ordinary Portland Cement is$C_3A$$C_3S$$C_2S$$C_4AF$

The Optimistic Time (O), Most likely Time (M) and Pessimistic Time (P) (in days) of the activities in the critical path are given below in the format O – M – P.The expect...

The activity details of a project are given below:$$\begin{array}{|c|c|c|} \hline \text{Activity} & \text{Depends on} & \text{Duration (in days)} \\ \hline P & \dots & 6 ...

In Marshall method of mix design, the coarse aggregate, fine aggregate, fines and bitumen having respective values of specific gravity $2.60, 2.70, 2.65$ and $1.01$, are ...

Workability of concrete can be measured using slump, compaction factor and Vebe time. Consider the following statements for workability of concrete.As the slump increases...

In a Marshall sample, the bulk specific gravity of mix and aggregates are $2.324$ and $2.546$ respectively. The sample includes $5 \%$ of bitumen (by total weight of mix)...

The target mean strength $f_{cm}$ for concrete mix design obtained from the characteristic strength $f_{ck}$ and standard deviation $\sigma$, as defined in $IS:456-2000$,...

Elevation and temperature data for a place are tabulated below:$$\begin{array}{|c|c|} \hline \text{Elevation, m} & \text{Temperature, } ^{\circ}C \\ \hline 4 & 21.25 \\ \...

If a small concrete cube is submerged deep in still water in such a way that the pressure exerted on all faces of the cube is $p$, then the maximum shear stress developed...

The setting time of cement is determined usingLe Chatelier apparatusBriquette testing apparatusVicat apparatusCasagrande's apparatus

At a construction site, a contractor plans to make an excavation as shown in the figure.The water level in the adjacent river is at an elevation of $+20.0$ m. Unit weight...