Show I Mixing of Brick Mortar Mortal Important Consideration as us generally used In brick masonry Is some saute mixture of if sand time lime ce cement ell I and water It may coal conI contain urn ala nil all of these sub suh substances stances or only lilly three of them and the quality at us well usell as liS he the quantity of each substance may many vary ury The i ti'S of each ingredient are given hen below Standard specifications for each euch 01 ol the thc solid ingredients have been 1 adopt adopted ed or m recommended by hJ the American Society for Testing Materials un nail and may be beo belou lou found tin I In III ii I their hel r book of St stand and ards In III some attune lat large jobs jolts material are aie rigidly specified and carefully I iy arid and accurately checked But In n most niost jolts Job the purchase of materials front from reliable rell reli able sources Is sufficient guarantee ol iii quality It is s then lien only necessary to see thul t I they lucy hc are properly mixed t lo to II produce t the lie desired I mortars tutu and lo 10 I I II HIM ho I he mortar is properly used usell to 0 ob oh obtain Lain tain the right kind of If brickwork nJ The Ilie first hydraulic cell cements Wilts U used ed III In this hIs ry were vei-e natural cements manufactured t l' l y I hue of at argillaceous containing suf sufficient ur Hilda UI tumid and iron x iii to confer hydraulic properties when time the burned rued rock was pulverized and HilI gauged ld willI vH Ii water vater These natural cements I hough used for years hurt have been heen ul almost mast completely ely replaced I h by Portland cement lt which ht Is s much untie more un uniform form in lii composition 1 tion mId anti hella Modern mulct methods hotis of if mall manufacture II fu fact lt u ur 1 produce e Portland port or land cement I of If uniform fun physical Jh 1 properties lea les and vor It il I II I though I th the he chemical t composition 1111 nry vary sli slightly Na Natural tural cements set more rapidly titan than portland cement and mId H are moe iC slower In III d developing t strength The st si i I of tf l 1 12 2 fiat rUtur natural nral cement mortar r is mu aboin equal to tn o that of 1 14 4 portland Iud cement mortar r. r I Flue illI name II lime ine Is generally general iy il cI 10 to II mean I It is also use used lo In embrace e hydrated ted lime linie Chemically Unit Ij Is calcium oxide o out nut In a tt broader souse sense it is the dm class statute name given gl to lit a II wide vIde of nets acts manufactured hind tired by t till the tin t tutu of limestone Ii tote which con bis of heat III mg tug to expel I he lie eat carbon dioxide Thi- Thi product Is quicklime |