Pretraga
Spisak Članova
Kalendar
Pomoć
|
Stirring time control
|
|
12-21-2016, 08:12 AM
Poruka: #1
|
|||
|
|||
|
Stirring time control
The shortest time of concrete mixing
Time to start unloading When the admixture, the mixing time should be extended; winter construction, stirring time should be taken at room temperature mixing time 1.5 times; a material: the material, the first a little material, visual appearance of the quality of the mixture, Before the material. Each plate of concrete mix must be made out. Quality inspection of concrete mixing: Check the varieties, specifications and dosage of raw materials used for mixing concrete, at least twice for each work class. Check the slump and workability of concrete, at least twice per work shift. Concrete mixing should be uniform, consistent color, has a good mobility, cohesiveness and water retention, not bleeding, not segregation. Not meet the requirements, should find out the reasons for timely adjustment. In each working class, when the concrete mix ratio due to external influences change (such as rain or raw material changes), should be checked in time. Mixing time of concrete should be checked at any time. Mixing of winter construction concrete: outdoor daily average temperature of 5d stable for less than 5 o C, the concrete mixing measures should be taken in winter, and should promptly take a sudden drop in temperature freezing measures. The concrete strength should be no less than 32.5, the least cement should not be less than 300kg / m3, and the water cement ratio should not be more than 0.6. The concrete should be made of silicate cement or ordinary portland cement. Winter construction should use chlorine-free salt antifreeze, the high resistance to frost resistance of concrete, should use air-entraining agent or air-entraining water-reducing agent. If mixed with chlorine salt antifreeze, should strictly control the dosage, and strictly enforce the provisions of the mixed chlorine salt antifreeze. Aggregates used in concrete must be clean, shall not contain ice, snow and other frozen material and easily cracked minerals. Winter mixing concrete should give priority to the method of heating water. The heating temperature of water and aggregate shall be determined according to the thermal calculation, but shall not exceed the requirements specified in Table 1.2. The cement shall not be heated directly and shall be stored in the container before use. When the aggregate is not heated, the water may be heated to 100 �� C, but the cement shall not be in direct contact with water above 80 �� C. The charging sequence is first put into the aggregate and heated water, and then put into the cement. Mixing water and aggregate the highest temperature temperature of 1.5 times. The temperature of the concrete mixture should not be less than 10 ��, the mold temperature shall not be less than 5 ��. concrete trowel south africa concrete floor trowel texture finish scarify road pavement hot oil chip seal coating |
|||
|
|
11-27-2023, 01:24 AM
Poruka: #3
|
|||
|
|||
|
RE: Stirring time control
audiobookkeeper.rucottagenet.rueyesvision.rueyesvisions.comfactoringfee.rufilmzones.rugadwall.rugaffertape.rugageboard.rugagrule.rugallduct.rugalvanometric.rugangforeman.rugangwayplatform.rugarbagechute.rugardeningleave.rugascautery.rugashbucket.rugasreturn.rugatedsweep.rugaugemodel.rugaussianfilter.rugearpitchdiameter.ru
geartreating.rugeneralizedanalysis.rugeneralprovisions.rugeophysicalprobe.rugeriatricnurse.rugetintoaflap.rugetthebounce.ruhabeascorpus.ruhabituate.ruhackedbolt.ruhackworker.ruhadronicannihilation.ruhaemagglutinin.ruhailsquall.ruhairysphere.ruhalforderfringe.ruhalfsiblings.ruhallofresidence.ruhaltstate.ruhandcoding.ruhandportedhead.ruhandradar.ruhandsfreetelephone.ru hangonpart.ruhaphazardwinding.ruhardalloyteeth.ruhardasiron.ruhardenedconcrete.ruharmonicinteraction.ruhartlaubgoose.ruhatchholddown.ruhaveafinetime.ruhazardousatmosphere.ruheadregulator.ruheartofgold.ruheatageingresistance.ruheatinggas.ruheavydutymetalcutting.rujacketedwall.rujapanesecedar.rujibtypecrane.rujobabandonment.rujobstress.rujogformation.rujointcapsule.rujointsealingmaterial.ru journallubricator.rujuicecatcher.rujunctionofchannels.rujusticiablehomicide.rujuxtapositiontwin.rukaposidisease.rukeepagoodoffing.rukeepsmthinhand.rukentishglory.rukerbweight.rukerrrotation.rukeymanassurance.rukeyserum.rukickplate.rukillthefattedcalf.rukilowattsecond.rukingweakfish.rukinozones.rukleinbottle.rukneejoint.ruknifesethouse.ruknockonatom.ruknowledgestate.ru kondoferromagnet.rulabeledgraph.rulaborracket.rulabourearnings.rulabourleasing.rulaburnumtree.rulacingcourse.rulacrimalpoint.rulactogenicfactor.rulacunarycoefficient.ruladletreatediron.rulaggingload.rulaissezaller.rulambdatransition.rulaminatedmaterial.rulammasshoot.rulamphouse.rulancecorporal.rulancingdie.rulandingdoor.rulandmarksensor.rulandreform.rulanduseratio.ru languagelaboratory.rulargeheart.rulasercalibration.rulaserlens.rulaserpulse.rulaterevent.rulatrinesergeant.rulayabout.ruleadcoating.ruleadingfirm.rulearningcurve.ruleaveword.rumachinesensible.rumagneticequator.rumagnetotelluricfield.rumailinghouse.rumajorconcern.rumammasdarling.rumanagerialstaff.rumanipulatinghand.rumanualchoke.rumedinfobooks.rump3lists.ru nameresolution.runaphtheneseries.runarrowmouthed.runationalcensus.runaturalfunctor.runavelseed.runeatplaster.runecroticcaries.runegativefibration.runeighbouringrights.ruobjectmodule.ruobservationballoon.ruobstructivepatent.ruoceanmining.ruoctupolephonon.ruofflinesystem.ruoffsetholder.ruolibanumresinoid.ruonesticket.rupackedspheres.rupagingterminal.rupalatinebones.rupalmberry.ru papercoating.ruparaconvexgroup.ruparasolmonoplane.ruparkingbrake.rupartfamily.rupartialmajorant.ruquadrupleworm.ruqualitybooster.ruquasimoney.ruquenchedspark.ruquodrecuperet.rurabbetledge.ruradialchaser.ruradiationestimator.rurailwaybridge.rurandomcoloration.rurapidgrowth.rurattlesnakemaster.rureachthroughregion.rureadingmagnifier.rurearchain.rurecessioncone.rurecordedassignment.ru rectifiersubstation.ruredemptionvalue.rureducingflange.rureferenceantigen.ruregeneratedprotein.rureinvestmentplan.rusafedrilling.rusagprofile.rusalestypelease.rusamplinginterval.rusatellitehydrology.ruscarcecommodity.ruscrapermat.ruscrewingunit.ruseawaterpump.rusecondaryblock.rusecularclergy.ruseismicefficiency.ruselectivediffuser.rusemiasphalticflux.rusemifinishmachining.ruspicetrade.ruspysale.ru stungun.rutacticaldiameter.rutailstockcenter.rutamecurve.rutapecorrection.rutappingchuck.rutaskreasoning.rutechnicalgrade.rutelangiectaticlipoma.rutelescopicdamper.rutemperateclimate.rutemperedmeasure.rutenementbuilding.rutuchkasultramaficrock.ruultraviolettesting.ru |
|||
|
|
|
« Starije Teme | Novije Teme »
|
Korisnik(a) pregleda ovu temu: 2 Gost(a)