How to use concrete fonts?

This MWE:

\documentclass{article}

\usepackage[utf8]{inputenc}
\usepackage{polski}

\usepackage{beton}

\begin{document}

\section{Section title}
Hello world.

\end{document}

produces "Hello world." in Concrete font, but not the section title. (Without the polski package, a bitmap font is used; with it, it's a Type 1 font – at least in TeXlive 2013. I have no idea why, though this is not a big deal for me here.)

What is the "canonical" way to enable concrete fonts for section titles etc.? (Note: I'm considering switching to memoir or even something else for this document – it's a thesis – so "use memoir with such-and-such modifications to section/chapter styles", or some other class, might be a valid answer.)

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Ah, thanks! I forgot that \sections are not only \large, but also \bfseries... – mbork Mar 31 '14 at 20:30

Your MWE gives me the warning:

LaTeX Font Warning: Font shape OT4/ccr/bx/n' in size <14.4> not available
(Font)              Font shape OT4/cmr/bx/n' tried instead on input line 10.

That is there was no bold ("bx") Computer Concrete ("ccr"), so a bold Computer Modern ("cmr") was substituted.

The UK TeX FAQ has a question about Concrete which mentions that there are no bold Concrete fonts, but that it is "generally accepted that the Computer Modern Sans Serif demibold condensed fonts are an adequate substitute", and that you can get those (for beton) with

\renewcommand{\bfdefault}{sbc}
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Ha! I guess that I've just lost the right to ask anyone having LaTeX problems "Did you look at the log file?" ;) – mbork Mar 31 '14 at 20:36

To the best of my knowledge, the Computer Concrete font family only comes in medium-weight shapes. In order to get LaTeX to use Computer Concrete, rather than Computer Modern, as the font in sectioning headers, you must instruct LaTeX to use only medium-weight fonts in such circumstances.

One way to do so is to add the instructions

\usepackage{sectsty}
\allsectionsfont{\mdseries}

to the preamble.

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Thanks! I decided to accept @pst's answer below because it's more "lightweight", and addresses a more general issue - even though I may use your suggestion instead. – mbork Mar 31 '14 at 20:35
@mbork - If you do end up employing the memoir document class, be sure not to load the sectsty package. Instead, use \renewcommand on \chaptitlefont, \chapnamefont, and \chapnumfont (to \Huge\mdseries, say) to use medium-weight fonts for chapter headers. And, use \setsecheadstyle{\mdseries} and \setsubsecheadstyle{\mdseries} to set a medium font weight for section and subsection headers. – Mico Mar 31 '14 at 21:08
thanks. Of course, if I use memoir, I'll look into its docs;). – mbork Mar 31 '14 at 21:09

EDIT: I misunderstood the question. My answer below is for obtaining a vectorized version of the Concrete fonts. Sorry for the inconvenience.

You should use the T1 encoding, the recommended 8bits encoding for almost all European languages other than English:

\usepackage[T1]{fontenc}
\usepackage{beton}% or ccfonts, or concrete

It will load the cm-super package which contains a vectorized version of the EC fonts (LaTeX standard fonts for the T1 font encoding) among which the EC Concrete fonts. I don't know the polski package, but it is certainly not necessary for the fonts themselves.

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Did you try out your answer? If I add the instruction \usepackage[T1]{fontenc} to the OP's code, I still get CM, and not Concrete, as the font for the section header. – Mico Mar 31 '14 at 20:26
Simply because there are no bold version of the Concrete fonts, as far as documented in the LaTeX Companion… – Franck Pastor Mar 31 '14 at 20:27
But then your solution doesn't answer the OP's query. – Mico Mar 31 '14 at 20:28
You are right, I misread it! I thought that the point was to obtain a type 1 version of the Concrete fonts! I edit my answer (which should then be changed in a comment.) – Franck Pastor Mar 31 '14 at 20:30
@fpast: I had the LaTeX Companion once in my hands, for some 3 minutes... And I forgot (again...) about the boldness of section titles. – mbork Mar 31 '14 at 20:32