Lejè aditif konkrè | Ajan kimen wo-pèfòmans pou konkrè selilè
Konpare ak blòk konkrè tradisyonèl yo, Blòk konkrè ki lejè gen pi wo fòs konpresiv, pi ba absòpsyon dlo ak pi ba volim. Yo tou pi lejè, less expensive and environmentally friendly.
A typical lightweight block weighs 22-28 liv, compared to the standard weight block which weighs about 19.5 liv. They are manufactured from expanded clay aggregates or volcanic cinders. They can be cured in a temperature range of 170-185degF, with a curing time of 24 èdtan.
The raw materials are weighed electronically before being mixed in the mixer. They are then blended with sand, lime and other ingredients to make a slurry. The mixture is poured into molds for forming. The blocks are then compacted and pushed out of the molds onto a flat steel pallet. The blocks are then placed in storage.
Blòk ki kapab lakòz la konpoze de yon melanj de siman ak sab nan yon rapò apeprè 30% pou 70%. Se sab la kouvwi ak yon kouch syur pou amelyore lyezon siman an ak sab la.. Kouch sa a anpeche blòk la boule.
Pwosesis la nan fòme blòk la mande pou siveyans konstan. Se kantite dlo kontni mezire lè l sèvi avèk detèktè ultrasons. Si dlo bloke, yo ajoute yon kantite dlo adisyonèl pou konpanse pou li.
Yon blòk geri pou 12-18 èdtan nan cho, lè imid. Lè sa a, li lustres ak yon lyan rezin thermosetting. Sa a ka bay yon efè dekoratif. Li kapab tou kouvwi ak yon glase kwit-sou. Pigman koulè yo anjeneral ajoute pou bay blòk la yon koulè inifòm.