ABSTRACT

If concrete is crack free, deleterious substances can be avoided entering the body of the material, that may corrode the rebar or encourage freeze/thaw damage. This paper examines a self healing system of cementitious materials.

Microbial induced calcite precipitation was used to heal cracks in concrete with calcite using bacillus bacteria in alkaline conditions to generate a calcite filling material.

Self healing of cracked prisms was determined using a water flow and absorption test and the results were expressed to record the healing as a percentage.

The findings of the tests showed that a significant degree of self healing had taken place after 56 days after inducing a crack to the concrete prisms and the water flow test was appropriate to determine the degree of self healing taking place.

Limitations of this process are such that the process requires a biological laboratory to create the spore impregnated aggregate. Once the aggregate is prepared, the batching process is essentially the same as any normal concrete.

A practical use of this system could be developed using cover panels of self healing material to act as permanent formwork, thus placing the healing ingredients where they are needed at a minimum cost. The system has huge potential for the creation of a self repairing sustainable infrastructure.

6.0 REFERENCES

6.0 REFERENCES
Barbero-Barrera,
M. del M,
Maldonado-Ramos,
L.,
Van Balen,
K.,
García-Santos,
A.,
and
Javier Neila-Gonzáleza,
F.
(
2013
).
Lime Render Layers: An Overview of Their Properties
,
Journal of Cultural Heritage
,
15
,
pp.
326
330
.
Brown
A.J.
(
1886
).
The chemical action of pure cultivations of bacterium aceti
.
Journal Chem Soc
,
Vol 49
,
pp.
432
439
.
BS EN 1015-11
:
1999
.
Methods of test for mortar for masonry
,
London
:
British Standards Institute
.
BS EN 12390-2
:
2009
.
Testing hardened concrete. Making and curing specimens for strength tests
,
London
:
British Standards Institute
.
BS EN 12390-3
:
2009
.
Testing hardened concrete. Compressive strength of test specimens
,
London
:
British Standards Institute
.
BS EN 1992-3
:
2006
.
Euro code 2
,
Design of concrete
,
London
:
British Standards Institute
.
Farrell,
P.,
Sheratt,
F.,
and
Richardson,
A.
(
2016
).
Writing Built Environment Dissertations and Projects: Practical Guidance and Examples
,
Wiley Blackwell
,
UK
Gollapudi,
U.K.,
Knutson,
C.L.,
Bang,
S.S.,
and
Islam,
M.R.
(
1995
).
A new method for controlling leaching through permeable channels
,
Chemosphere
,
30
(
4
),
pp.
695
705
.
Grumbein,
S.,
Minev,
D.,
Tallawi,
M.,
Boettcher,
K.,
Prade,
F.,
Pfeiffer,
F.,
Grosse,
C.U.,
and
Lieleg.
O.
(
2016
),
Hydrophobic Properties of Biofilm-Enriched Hybrid Mortar
,
Advanced Materials
,
Vol 28
,
pp.
8138
8143
.
Jonkers,
H.M.,
Thijssen,
A.,
Muyzer,
G.,
Corpuroglu,
O.,
and
Schlagen,
E.
(
2010
).
Application of bacteria as self healing agent for the development of self healing concrete
,
Ecological Engineering
,
Vol 36
,
pp.
230
235
.
Matsuoka,
M.,
Tsuchida,
T.,
Matsushita,
K.,
Adachi,
O.,
and
Yoshinaga,
F.
(
1996
).
A synthetic medium for bacterial cellulose production by Acetobacter xylinumsubsp.sucrofermentans
,
Bioscience, Biotechnology, and Biochemistry
,
60
(
4
),
pp.
575
579
.
doi: 10.1271/bbb.60.575.
Pacheco-Torgal,
F.,
and
Labrincha,
J.A.
(
2013
).
Biotech cementitious materials: Some aspects of an innovative approach for concrete with enhanced durability
,
Construction and Building Materials
,
40
,
pp.
1136
1141
.
doi: 10.1016/j.conbuildmat.2012.09.080.
Richardson,
A.,
Coventry,
K.,
and
Pasley,
J.
(
2016
).
Micro-induced calcite precipitation—crack sealing application
,
The 9th International Concrete Conference, Environment, Efficiency and Economic Challenges for Concrete
,
Dundee University, UK
,
July 4–6
,
pp.
30
36
.
Richardson,
A.E.,
Coventry,
K.A.,
Forster,
A.,
and
Jamison,
C.
(
2014
).
Surface consolidation of natural stone materials using microbial induced calcite precipitation
,
Structural Survey
,
Vol. 32
,
Iss: 3
,
pp.
265
278
.
Schramm,
D.,
Shamp,
A.,
and
Zumbach,
D.
(
2004
).
A report on Concrete Sealants With Emphasis on Their Radon Blocking Capabilities and Their Green Values
.
Trask,
R.S.,
Williams,
H.R.,
and
Bond,
I.P.
(
2007
).
Self-healing polymer composites: Mimicking nature to enhance performance
,
journal. doi: 10.1088/1748-3182/2/1/p01.
Tzivilogou,
E.,
Wicktor,
V.,
Jonkers,
H.M.,
and
Schlangen,
E.
(
2015
).
Development of bio-based self healing concrete to increase durability of structures
,
eighth International Conference on Construction in the 21st century (CITC-V111), Changing the field: Recent developments for future Engineering and construction
,
May 27–30
,
Thessalonica, Greece
.
Tziviloglou,
E.,
Wiktor,
V.,
Wang,
J.,
Paine,
K.,
Alazhari,
M.,
Richardson,
A.,
Gueguen,
M.,
De Belie,
N.,
Schlangen,
E.,
and
Jonkers,
H.
(
2016a
).
“Evaluation of experimental methodology to assess the sealing efficiency of bacteria based self healing mortar: Round robin test.”
Delft, Netherlands
.
Wiktor,
V.,
and
Jonkers,
H.M.
(
2011
).
Quantification of crack-healing in novel bacteria-based self-healing concrete
,
Cement and Concrete Composites
,
33
(
7
),
pp.
763
770
.
doi: 10.1016/j.cemconcomp.2011.03.012.
Wu,
M.,
Johannesson,
B.,
and
Geiker,
M.
(
2012
).
A review: Self-healing in cementitious materials and engineered cementitious composite as a self-healing material
,
Construction and Building Materials
,
28
(
1
),
pp.
571
583
.
doi: 10.1016/j.conbuildmat.2011.08.086.
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Author notes

1. Engineering and Environment, Northumbria University, UK, arichardson@northumbria.ac.uk

2. Engineering and Environment, Northumbria University, UK

3. School of Mathematics Department, UEA ,UK

4. Engineering and Environment, Northumbria University, UK

5. Engineering and Environment, Northumbria University, UK