He aha nga momo raima mama

What is lightweight concrete？

He maha nga wa e whakamahia ana te raima maamaa i roto i nga whare miihini maha, me te raima mama e pa ana ki te raima i hangaia ki te raima maramara me nga whakahiato pai me te sima. Ko te raima mama he kupu whanui mo te raima me te nui o te kiato kaore e nui ake i te 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, ceramsite, perlite whakawhānui, expanded slag, parapara, etc.

2. Hollow concrete (raima pahuka, aerated concrete), its apparent density is 300-1000 kg/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 ki 1900 kg/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 kg/m3, and it is prepared with ceramsite, pumici, broken brick, parapara, etc. as aggregates.

Ko Cie-China.org te kaiwhakarato taapiri raima pahuka e whakarato ana i te kaihoko hukapapa raima, superplasticizer,whakakaha kaha raima pahuka mo te raima mama, Nga poraka CLC. Mena kei te rapu koe kaihoko pahuka, tēnā koa koa whakapā mai.