Building construction concrete crack of
prevention and processing
Abstract
The crack problem of concrete is a widespread existence but again difficult in solve of engineering actual problem, this text carried on a study analysis to a little bit familiar
crack problem in the concrete engineering, and aim at concrete the circumstance put forward some prevention, processing measure.
Keyword: Concrete crack prevention processing
Foreword
Concrete's ising 1 kind is anticipate by the freestone bone, cement, water and other mixture but formation of the in addition material of quality brittleness not and all material.Because the concrete construction transform with
oneself, control etc. a series problem, harden model of in
the concrete existence numerous tiny hole, spirit cave and
tiny crack, is exactly because these beginning start blemish of existence just make the concrete present one some not and all the characteristic of quality.The tiny crack is a kind
of harmless crack and accept concrete heavy, defend Shen and
a little bit other use function not a creation to endanger.But after the concrete be subjected to lotus carry, difference
in temperature etc. function, tiny crack would continuously
of expand with connect, end formation we can see without the aid of instruments of macro view the crack be also the crack that the concrete often say in the engineering. Concrete
building and Gou piece usually all take sewer to make of,
because of crack of existence and development usually make
inner part of reinforcing bar etc. material creation decay,
lower reinforced concrete material of loading ability, durable and anti- Shen ability, influence building of external appearance, service life, severity will threat arrive people's life and property safety.A lot of all of crash of engineerings is because of the unsteady development of the crack with the result that.Modern age science research with
a great deal of of the concrete engineering practice certificate, in the concrete engineering crack problem is
ineluctable, also acceptable in certainly of the scope just
need to adopt valid of measure will it endanger degree control at certain of scope inside.The reinforced concrete norm is
also explicit provision:Some structure at place of dissimilarity under the condition allow existence certain
the crack of width.But at under construction should as far
as possible adopt a valid measure control crack creation,
make the structure don't appear crack possibly or as far as
possible decrease crack of amount and width, particularly
want to as far as possible avoid harmful crack of emergence, insure engineering quality thus.
Concrete crack creation of the reason be a lot of and have already transformed to cause of crack:Such as temperature
variety, constringency, inflation, the asymmetry sink to sink etc. reason cause of crack;Have outside carry the crack that the function cause;Protected environment not appropriate the crack etc. caused with chemical effect.Want differentiation to treat in the actual engineering, work°out a problem acco rding to the actual circumstance.
In the concrete engineering the familiar crack and the prevention
1.Stem Suo crack and prevention
Stem the Suo crack much appear after the concrete protect
be over of a period of time or concrete sprinkle to build to
complete behind of around a week.In the cement syrup humidity of evaporate would creation stem Suo, and this kind of
constringency is can't negative.Stem Suo crack of the
