Laserfiche WebLink
<br />C1'J <br />r <br />'- <br />,,; <br />C'~ <br /> <br />c;. <br /> <br />f <br />I <br />I <br />I <br />i <br />i <br />~ <br />! <br /> <br />,';! <br /> <br />CONTENTS XIII <br /> <br />EFFECT OF END CONDtTIONS <br />Section. Page <br />126 Capping of test cylinders__________________________________~___ 155 <br />127 Ground caps___ _______ ___ ___________ ________ ____n______n___ 156 <br />128 Nea.t cement caps______n_n_______n_n_u___n_u__________ 157 <br />129 Sulfur compound caps____nn_n__n_nn_n_n__n____nnn_ 157 <br />130 Lumnite cement caps_____n_n____n__nn__u_n_nn_nnn 157 <br />131 Gypsum plaster capSn_nn____nn__nn__nn____nnn_n__ 157 <br />132 Caps prepared with gypsum and portland cement________n_nnn 158 <br />133 Strength results_ _ _ ____ nn__ __ _ _ ____ __ __ __ n_____n_ __ _____n 158 <br />134 Adopted procedure__ __ __________________________________ ----- 159 <br /> <br />EFFECT OF STRAIN AT A REENTRANT ANGLE <br /> <br />135 Purpose of tests_____nn__nn____nnn_____nn___n_______ 161 <br />136 Test specimen_n____ ______________u ________ _________________ 161 <br />137 Test apparatus and procedure___uu_uu____uu__u____un__ 161 <br />138 Test results and summaryu_u__nu_U__Un_hUU_n_______ 161 <br /> <br />EFFECT OF RATE AND METHOD OF LOAD APPLICATION <br /> <br />139 General method____u_u____n___u___un____nn__n_n____ 165 <br />140 Test seriesu______unuu______nu__u____nnu_uun_u_ 165 <br />141 Test machinesu___n__un___u_____n___uuh___n_nu__. 166 <br />142 Loa.d-rate instrumenL _ _ ___________ ___ u_____ ____ ___ ______ ---- 166 <br />143 Test results_u n_ _un__u _ _ ___u___n__ _ _ u _ ______u______u 166 <br />144 Adopted rate____u___un_nnunun___unu___n_______u 170 <br /> <br />UNIFORMtTY OF STRENGTHS <br /> <br />145 Purpose of tests__u__nu___uu__u_u_uu__nunnun___ 171 <br />146 Ceruent________________________________________________----- 171 <br />147 Aggregate_______________________________________________---- 171 <br />148 ~ixes_________________________________________________------ 171 <br />149 Specirnens______________________________________________----- 171 <br />150 Fabrication and testing_uunu___________n___________n___n 171 <br />151 Measures of uniformity_______u_____________________u_u___u 173 <br />152 Chemical analyses_ _ __ _ _ ____ __ ____ _ _ _ _____ ___ __ ___ ________ ---- 173 <br />153 Strengtbs_______________________________________________----- 173 <br /> <br />PRELIMlNARY ELASTICITY TESTS <br /> <br />154 Effect of type of capu___u_n_u__uu____n__un___u__u__ 177 <br />155 Effect of gage length____uu__uu___u__u______nu__u_____ 177 <br />156 Effect of temperature_ _ u_u n_U __ _ _ n _ _ __ _____n_ _ - __n_U_ - 177 <br />157 Effect of preload_____uu___u________uu_u___uuh__u___ 179 <br />158 Effect of method of loading__u__________u_uu_uu_____u___ 180 <br />159 Lag____________________________________________________----- 180 <br /> <br />ACCURACY OF ELASTICITY EQUlPMENT <br /> <br />160 Diam__________________________________________________------ 180 <br />161 Compressometers and extensometers___ __ ____________ _ __ _ ___ ---- 182 <br />162 Testing machines____ ___ _ n_U _ __ _ _ __ ___u_ ____n _ ________ ___ - 184 <br />163 Maximum possible errors due to the equipmenL __ _ __ __ u __ _ u _ n 185 <br />164 Comparison with mirror typeu______u___u__u_uu__uuu__ 186 <br />