B25 (simenti): makhalidwe ndi ntchito

Konkire amatanthauza wamkulu zomangira. The yomanga wakale anthu azikhalamo malo Padziko Lapansi asonyeza kuti ntchito yake inayamba zaka zoposa 6 zikwi zapitazo. Ndipo tsopano iye mwinamwake ambiri a zida zomangira. Tiyeni tione mwatsatanetsatane imodzi mwa mitundu yake - B25-konkire.

Khalidwe konkire

The yaikulu ya zowonetsera wa khalidwe la konkire ndi mphamvu compressive. Izi amasonyeza kalasi konkire makhalidwe akusonyeza kalata "B" (Latin), ndipo chiwerengero lolingana (mu makilogalamu pa lalikulu cm), katundu chovomerezeka pa izo. Choncho, Maphunziro B25 konkire akhoza kupirira katundu makilogalamu 25 / sq. cm. nyumba konkire kalasi kuphatikizapo koefishienti angathe kupirira katundu 327 makilogalamu / sq. cm, womwe ndi mtundu M350 mphamvu.

workability

khalidwe Kudziwa ntchito a konkire pamene ntchito. Malinga ndi GOST 7473-94, anayerekezera zimene amatchulidwa ndi kalata "P" ndi inteja kuchokera 1 mpaka 5, limafanana ndi yowona yonyowa ndi kuuma kwa masekondi 4 ndi kugawidwa ndi kuchepa mphamvu. Mu kuchepa mphamvu iyi (mu masentimita) 1-4, 5-9, 10-15, 16-20 ndi pa 21 masitampu ku P1 kuti P5, motero.

dera ntchito

Konkire B25 (M350 mtundu) ndi wotchuka kwambiri m'zaka zaposachedwapa, chimene chayambitsa mwa kumanga zofuna ntchito ndi kuonjezera kulamulira zochita zawo. Icho ndiye chifukwa kuti mtundu anayamba kutenga malo apamwamba ziwerengero pa malonda mankhwala konkire.

Mkulu mphamvu makhalidwe amapereka angapo khalidwe la simenti mu B25 zikuchokera chuma (simenti). Choncho nkhaniyi ndi ambiri applicable m'munda wa yomanga nyumba Mipikisano storey, kupanga kwambiri kupanikizika analimbitsa nyumba yowona (matabwa, slabs, mizati), masamu kuphatikizapo ntchito mu mapangidwe nkhanza.

Mu ake zikuchokera-B25 konkire kwenikweni limapangidwa, kuwonjezera polimbikitsa, lubwe miyala kapena mwala wosweka, ndasambitsa mtsinje mchenga. Pa msika wa zomangira mukhoza kuitanitsa ndi yobereka mu akakhale opanga ndi, osanganiza konkire mu mawonekedwe a otchedwa okonzeka konkire Kusakaniza ndi P2-P4 kuyenda.

Konkire B25 (M350 Brand) amakhala ndi mfundo zabwino zizindikiro za kukana chisanu ndi madzi kukana. Choncho, chimagwiritsidwa ntchito zokongoletsa olimba maziko (a mbale, columnar, mulu-rostverkovyh ndi tepi), komanso masitepe konkire. Kuchokera mu mabanja mseri (ndi mu gawo mafakitale) ndi kuponyedwa mbale mabeseni, slabs monolithic ndi mpanda. B25-mwala ndi cholimba kwambiri ndi kugonjetsedwa ndi kumva kuwawa. Kuyambira chilemba ichi, makamaka, anapanga njira airfield mbale unathandizira pa mavuto adzaoneni nyengo. Pomanga malonda nawonso ntchito ambiri ndi cholinga kumutsimikizira ndi kuonjezera kudalirika kwa nyumba ndi maofesi ena.

Konkire B25: mtengo

kalasi iyi ya mtengo simenti pansi tikukumana amasiyana tidaipanga osiyanasiyana m'malo lonse. Izo zimatengera zinthu monga moyandikana ndi quarries ndi akatswiri a zipangizo ndi katundu wa ogula nyumba yosungiramo katundu ndekha, mayendedwe ndi malonda ndi kudziŵidwa m'munsi, potsiriza, mbiri ya amapanga zida zomangira msika. mtengo chimadaliranso mlingo wa sayenda wa simenti: apamwamba ndi, zinthu zodula. Price ndi mosiyanasiyana malingana ndi zigawo za fillers. Childs konkire pamaziko a miyala ndi mtengo kuposa zinthu zochokera lubwe wosweka. Nsalu zina mtengo kwa chomenyedwa zobwezerezedwanso, akamagwira akupera nyumba konkire. Pafupifupi B25-simenti zikhoza kugulidwa (kupatulapo yobereka) pa mtengo wa rubles 3,000 kuti 3.800. pa mamita ^3.

Mudzipange

Pa nthawi imene kufunika kwa mabuku ang'ono B25, konkire akhoza kukhala paokha. Chifukwa chaichi m'pofunika kusakaniza simenti, mchenga ndi filler otsatirawa kufanana volumetric: simenti M500 - 1: 1,9: 3.6; polimbikitsa M400 - 1: 1.5: 3.1. Madzi ananenanso mu ndalama kupeza chinthu chimodzimodzi ankafuna. M'pofunika kutsatira malamulo:

• Gwiritsirani ntchito zida woyera ndi madzi;
• bwino ntchito mchenga kuchapa miyala kapena mwala wosweka (zosafunika dongo kuchepetsa mphamvu ya chuma);
• Musati kuwonjezera madzi pambuyo kusinja njira (pamene anawonjezera mphamvu atayika nkhani);
• yankho ayenera kugwiritsidwa ntchito mwa ora limodzi pambuyo kukonzekera.

The filler angagwiritsidwe ntchito miyala, wophwanyidwa lubwe thanthwe, miyala kapena sekondale. Pakuti simenti mtundu M350 ntchito fillers monga dongo kukodzedwa, slag ndi zina thanthwe porous, kuti mulibe kupereka chofunika mphamvu zakuthupi.

Choncho, m'nkhani ino ife anayang'ana pa nkhani mitundu yowona, zothandiza kwambiri m'madera structural ndi mkulu mphamvu yomanga. Tikukhulupirira kuti mfundo m'nkhani ino kukhala zothandiza inu.