Use of Recycled Construction Materials for Mortar Production

Title: Use of Recycled Construction Materials for Mortar Production
Author(s): Martins
Paper category : conference
Book title: International RILEM Conference on the Use of Recycled Materials in Building and Structures
Editor(s): E. Vázquez, Ch. F. Hendriks and G.M.T. Janssen
Print-ISBN: 2-912143-52-7
e-ISBN: 2912143756
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 684 - 692
Total Pages: 9
Nb references: 8
Language: English

Abstract: Studies show that the amount of civil construction materials waste is twice as big as
the domestic garbage. The society appears to be less worried about debris than domestic
garbage because it does not smell and is less toxic. However, as it is not biodegradable, it
causes the obstruction of rivers and brooks, when deposited improperly. The substitution of
natural resources for recycled materials can be an alternative in mortar production,
considering mortar as one of the most used materials in construction, defined as mixtures of
sand, a binder such as lime or cement, and water. This research had as objective to study
the behavior of mortars with debris addition. The recycled material after previously
selection and a main sample is obtained by the produce outlined, granding of aggregate.
The proportion used was 1:1:8 (cement: lime: sand), considering different proportions of
thin aggregate (debris sand/ natural sand), 100/0; 70/30; 50/50; 30/70; 0/100. The option
was to maintain the use of cement, lime e water. The behavior of mortars was evaluated
with tests of compressive strength, consistency, absorption and costs for each proportion.
The results obtained indicated that mortars with addition of recycled aggregate presented a
higher compressive strength compared to the reference mortars (natural sand), the same
happened with absorption. The mortars with addition of construction debris showed
satisfying results, proving to be a viable option. Another big contribution is the use of
residues, avoiding environmental problems.

Online publication: 2004-09-29
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143756.076