Ndi mtundu wazinthu zomwe zimagwiritsidwa ntchito ponseponse, zomwe zitha kugwiritsidwa ntchito m'mitundu yosiyanasiyana yamasinthidwe a simenti ndipo zimagwirizana bwino ndi zowonjezera zina.
Zili ndi zofunikira zochepa ndi madzi osakaniza ndipo sizikugwiritsidwa ntchito m'madzi a simenti slurry, komanso zimagwiranso ntchito m'madzi a m'nyanja ya simenti slurry.
Nthawi yotumiza: Dec-17-2018