knitr::opts_chunk$set(echo = TRUE)
Data about concrete mixtures and resulting properties (Slump, Flow and Strength). Input variables are:
Water content : ACI 211.1 (Standard practice for selecting proportions for normal, heavyweight, and mass concrete) assumes that, for a given maximum size of coarse aggregate, the slump or consistency of concrete is a direct function of the water content; i.e., within limits it is independent of other factors such as aggregate grading and cement content.
Superplasticizer : When the water content of a concrete mixture is held constant, the addition of a superplasticizer will increase the consistency.
Pozzolanic admixtures : Pozzolanic admixtures tend to improve the cohesiveness of concrete. Fly ash, when used as a partial replacement for fine aggregate, generally increases the consistency at a given water content.
Cement content : Concretes containing a very high proportion of cement show excellent cohesiveness, but tend to be sticky. At a given water content, a considerable lowering of the cement content tends to produce harsh mixtures, with poor cohesiveness.
Aggregate characteristics : Very fine sands require more water for a given consistency; alternatively, they will produce harsh and unworkable mixtures at a water content that might have been adequate with coarser sands. Also, the particle size of coarse aggregate influences the water requirement for a given consistency.
library("rio") #concrete <- import("https://shinyapps.hu-berlin.de/u/stat/data/concrete.sav") #head(concrete)
The data set contains data of 237 children between 11 and 20 years.
Variable | Meaning -------------|----------------------------------------------------------------------------------------- Cement | Cement (in kg/m$^3$ concrete) Slag | Slag (in kg/m$^3$ concrete) Flyash | Fly ash (in kg/m$^3$ concrete) Water | Water (in kg/m$^3$ concrete) SP | Superplasticizer (in kg/m$^3$ concrete) CoarseAggr | Coarse sand (in kg/m$^3$ concrete) FineAggr | Fine sand (in kg/m$^3$ concrete) Slump | Slump (in cm) Flow | Flow (in cm) Strength | 28day compressive strength (in Megapascal)
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.