O a ituaiga sima mama

What is lightweight concrete？

O sima mama e masani ona faʻaaogaina i le tele o fale inisinia, ma o le sima mama e faasino i le sima e faia i le sima mama. O le sima mama o se faaupuga lautele mo le sima ma le mamafa tele e le sili atu i le 1950kg/m3. So what types of lightweight concrete are included?

There are three main types of lightweight concrete

1. Lightweight aggregate concrete has an apparent density of 800~1950 kg/m3. Lightweight aggregates include pumice, volcanic slag, sima, fa'alautele perlite, expanded slag, ma'a, ma isi.

2. Hollow concrete (sima fa'afefe, aerated concrete), its apparent density is 300-1000 kilokalama/m3. Foamed concrete is made of cement slurry or cement mortar and stable foam. Aerated concrete is made of cement, water and gas generating agent.

3. Macroporous concrete (ordinary macroporous concrete, light aggregate macroporous concrete) has no fine aggregate in its composition. The apparent density of ordinary macroporous concrete ranges from 1500 ia 1900 kilokalama/m3, and is prepared with crushed stone, soft stone, and heavy slag as aggregates. The apparent density of light aggregate macroporous concrete is 500-1500 kilokalama/m3, and it is prepared with ceramsite, pumice, broken brick, ma'a, ma isi. as aggregates.

O le Cie-China.org o le ta'uta'ua lea e tu'uina atu mea fa'apipi'i sima e tu'uina atu ai so'o fa'afu, superplasticizer,foam sima fa'aleleia malosi mo sima mama, poloka CLC. Afai o e su'e mea fa'asusu, faamolemole lagona le saoloto e faafesootai matou.