%0 Journal Article
%T Modelling the delivery and laying of concrete mix
%A Więckowski, Andrzej
%J Technical Transactions
%V 2017
%R 10.4467/2353737XCT.17.153.7165
%N Volume 9 Year 2017 (114)
%P 127-135
%K queueing theory, construction, production organisation
%@ 0011-4561
%D 2017
%U https://ejournals.eu/en/journal/czasopismo-techniczne/article/modelling-the-delivery-and-laying-of-concrete-mix
%X 
	The aim of this paper is to indicate solutions which fulfil the conditions for laying concrete mix before it starts setting. Using models M/M/N/-/N, for organization I for the so-called delivery directly after unloading, with automatic transfer of information using the RFID system, and M/M/1/FIFO/N/F, for organisation II with transportation units working in closed cycle. Of example, organisation I, with RFID system is more advisable as it is characterised by a shorter waiting time on construction sites; and longer at the concretemixing plant. At the same time, it increases the efficiency of working units compared with organisation II which has self-regulating transportation units running in closed cycle.