LOW ALKALI NON-CEMENT CONCRETE COMPOSITION WITH TANNIN AND BLOCK UNIT COMPRISING THE SAME

摘要

PURPOSE: A low alkali non-comment concrete composition containing tannin is excellent in compressive strength while not eluting strong akaline composition and can lower the amount of carbon dioxide emission. CONSTITUTION: A low alkali non-comment concrete composition containing tannin includes slag powder of 20-40 parts by weight, fly ash of 20-40 parts by weight, limestone find powder 5-15 parts by weight, quicklime of 5-10 parts by weight, sodium sulfate of 1- 5 parts by weight, tannin of0.2- 0.5 parts by weight, gypsum dihydrate of 15-25 parts by weight and silica fume of 3-10 parts by weight. A 56-day-old low alkali non-comment concrete composition has a pH level of 9.2-10.2. A block comprises the low alkali non-comment concrete composition containing tannin.