1.Mortar 1) Txhim kho qhov sib xws, ua kom mortar yooj yim rau kev ua haujlwm, txhim kho kev tiv thaiv sagging, nce fluidity thiab pumpability, thiab txhim kho kev ua haujlwm. 2) Kev tuav dej siab, ua kom ntev mortar pouring lub sij hawm, txhim kho kev ua hauj lwm efficiency, yooj yim hydration ntawm mortar, thiab tsim high mechanical zog deg ...
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