The Open Construction & Building Technology Journal

ISSN: 1874-8368 ― Volume 13, 2019

Losses and Productivity Parameters for Cladding Technology with Wet-Process Sprayed Mortar

Denise Ribeiro dos Santos, Gabriela Alves Tenório de Morais*, Alberto Casado Lordsleem, Jr.
Civil Engineering Department, Polytechnic School, Pernambuco University, Recife/PE, Brazil


Background and Objective:

The wet-process sprayed mortar is a potential solution to minimize the traditional application negative points. However, its use is still incipient and a recent technological innovation in several regions of Brazil. Few available parameters that attest gains to subsidize the budget, design, and execution of cladding are systematized. This paper aims to evaluate the industrialized mortar loss and labor productivity in the execution of internal and external cladding for buildings.


The first step was to define the elements to characterize the constructive cladding technology with mechanical projection of mortar and method for effective data collection. The second step consisted in the accomplishment of the field research, which took into account the case studies in 08 buildings under construction. The third step intended to describe the best practices highlighted in the construction works analyzed and the fourth step described the identification of actions able to succeed in the implementation and operation of the system.


The results allowed verifying industrialized mortar loss varying from 6.38% to 150.02%, as well as masons’ productivity from 0.18M’hr/m2 up to 5.91M’hr/m2. The present research also made it possible to identify factors influencing the increase in the loss indicator, such as the fresh mortar consistency, failure in the transport and control of bagged materials, and high thicknesses in the cladding layer. As for the factors that favored productivity, it is important to highlight: the experience of the masons involved, the mortar application to the windows, and good logistics for the transportation of bagged goods.


Identification of the best practices, opportunities to improve production management, and obtainment of quantitative references comprise the main contributions of this research, which may help in adoption of this technology and solution of similar problems by construction companies.

Keywords: Wet-process sprayed mortar, Losses, Productivity, Indicators, Best practices, Performance.

Article Information

Identifiers and Pagination:

Year: 2018
Volume: 12
First Page: 197
Last Page: 215
Publisher Id: TOBCTJ-12-197
DOI: 10.2174/1874836801812010197

Article History:

Received Date: 12/02/2018
Revision Received Date: 12/4/2018
Acceptance Date: 8/05/2018
Electronic publication date: 14/6/2018
Collection year: 2018

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© 2018 Santos et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this authors at the Engineering Department, Polytechnic School, Pernambuco University, Rua Benfica, 455, Madalena, Recife/PE, Brazil; Tel: +558131847566; E-mails:,


"We greatly appreciate the efficient, professional and rapid processing of our paper by your team. The editors are so kind and professional to send us the reviewers' feedback in time. Those comments were all valuable and very helpful for us in revising and improving our paper."

Hailong Zhao
School of Civil Engineering,
Tianjin University, Tianjin,

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