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<br />('J <br />00 <br />Lt? <br />(': <br /> <br />c <br /> <br />CONTENTS <br /> <br />GRINDABILITY OF CEMENTS <br /> <br />s,(tion <br />134 Mill revolutions as an index <br />13 5 Eifect of compounds <br /> <br />FINENESS OF CEMENTS <br /> <br />1,6 <br />))7 <br />IJ8 <br />IJ9 <br />140 <br /> <br />Methods used <br />Results obtained <br />Specific surface most satisfactory <br />Partic1e.size distribution <br />Determinations of specific surface <br /> <br />PHYSICAL CHARACTERISTICS OF CEMENTS <br /> <br />141 Results presented <br />142 Failures to meet A.S, T,M. specifications <br />143 Specific gravity <br />144 Normal consistency <br />145 Time of set <br />146 Soundness <br />147 Water-cement ratios, fixed consistency <br /> <br />TEMPERATURE RISE AND HEAT OF HYDRATION <br /> <br />14' <br />14' <br />If 0 <br />151 <br />li2 <br />I" <br />154 <br />If. <br />116 <br />1f7 <br />If' <br />119 <br />160 <br />161 <br />162 <br />16' <br /> <br />General <br />Approximate time-temperature relation <br />Temperature rise, first 24 hours <br />Combined curves, heat of hydration <br />Effect of compound- composition <br />Effect of fineness <br />Heat treatment of clinker <br />Effect of magnesia <br />Effect of retarders <br />Loss on ignition <br />Effect of water-cement ratio <br />Comparison of curing conditions <br />Heat-ot-solution and adiabatic calorimeters <br />Neat cement and concrete <br />Cement content of concrete ... <br />Heat of hydration and heat of solution <br /> <br />STRENGTH-HEAT RATIO <br /> <br />164 <br />16. <br />166 <br />167 <br />168 <br />16' <br />170 <br />171 <br />172 <br /> <br />Variation in strength-heat ratio <br />Effect of compound composition <br />Effect of fineness <br />Fractionated cements <br />Loss on ignition ........... <br />Water-cement ratio <br />Effect of magnesia <br />Effect of retarde~s <br />Summary of results <br /> <br />X1l1 <br /> <br />Pilgt <br />III <br />II6 <br /> <br />II7 <br />II7 <br />118 <br />120 <br />120 <br /> <br />121 <br />12. <br />126 <br />126 <br />126 <br />127 <br />127 <br /> <br />III <br />III <br />140 <br />141 <br />14> <br />14' <br />151 <br />III <br />1,. <br />154 <br />157 <br />157 <br />16' <br />164 <br />165 <br />166 <br /> <br />167 <br />167 <br />167 <br />16' <br />169 <br />169 <br />16' <br />170 <br />170 <br />