maximum dry density formula

The testing described is generally consistent with the American Society for Testing and Materials (ASTM) standards, and are similar to the American Association of State Highway and Transportation … 0000006815 00000 n 0000004649 00000 n 0000002224 00000 n %PDF-1.2 %�� Air void ratio, A v = n (1-S r) = 0.41 (1-0.58) = 0.1722 (or 17.2%) (or 17.2%) Example 2 Determine the dry and bulk density of a soil sample having a porosity of … The dry density Yd in g/cc Yd = 100Y/(100+w) 0000002934 00000 n 0000001128 00000 n Below is the laboratory test … 0000002650 00000 n Maximum Dry Density (taken from Figure SC-T-29A) = 116.6 pcf 8.7. 0000007032 00000 n Density Density is a measure of the amount of matter available in a unit volume. So this read explains in depth, the significance, background, apparatus and procedure of the standard proctor test. 65 0 obj << /Linearized 1 /O 67 /H [ 1265 337 ] /L 46093 /E 9371 /N 11 /T 44675 >> endobj xref 65 39 0000000016 00000 n Apparent Relative Density tf Volume of total water (water in aggregate + water added at mixer) ** Time Factor (F) of 1.15 used Theoretical Maximum Dry Densitv (TMDD) = = 2219 kg/m' 1.005 Minimum dry density requirement of The corresponding moisture content is an optimum and not a maximum value unlike dry density which is a maximum value. h�b```�6A ��1��C�+AJ*�Y&V�2tL��z�� `�� ST(��$�H��H'�2��ǽ��,��FF)�o�[�O��q`�xV��mZ�z��`�q,�;J��\�I@�` �L� 1.6Oversize (Rock) Correction 1.6.1ASTM D 4718 Density Correction Dry densities are corrected for removed oversize 0000004935 00000 n The maximum dry density is finally obtained from the peak point of the compaction curve and its corresponding moisture content, also known as the optimal moisture content. 0000001602 00000 n %%EOF Maximum Density: The maximum density, γ d max, is calculated as – γ d max = W s / V s …(4.85) s Individual laboratory compaction tests are not made for each field density test. (1) The theoretical maximum density, "D" of mixtures containing coarse aggregate larger than a No. October 2012 THEORETICAL MAXIMUM SPECIFIC GRAVITY (Gmm) AND DENSITY OF HOT MIX ASPHALT (HMA) PAVING 0000003934 00000 n RE: Maximum Dry Density DRC1 (Civil/Environmental) 9 Jul 04 23:42 First I disagree with Ron and Big H. Unless the contractor was also responsible for testing, which although is not unheard of, it is most often not the case, then the municipailty had a responsibility to have testing done while the material was being placed. 0000005524 00000 n 0000005078 00000 n 0000005710 00000 n %PDF-1.5 %�� The maximum number of allowed units is easily calculated. 0000001580 00000 n 0000004220 00000 n 4 sieve will be determined by the formula: t Where: Df = Maximum dry laboratory density of minus No. 0000006385 00000 n Calculation of Moisture Content. 0000002366 00000 n 0000003505 00000 n 4 for Method A proctor or plus 3/4 inch for Alternate Method D proctor) shall be determined by the following equation: 100 (100 - PR) x (MD) + (56.2) x (PR) x (SG) CMD =        … 0000004363 00000 n These tests are generally referred to as Proctor tests. Define water content, void ratio and dry density of a soil.If wet density of a soil is 1.9 gm per cm at a moisture content of 24%, what will be its dry density? As a result the dry density starts decreasing from the peak value. REPORT 9.1. specification is usually that a certain percentage of the maximum dry density, as found from a laboratory test (Standard or Modified) must be achieved. 0000005364 00000 n determine the corrected maximum dry density (MDD C) of the soil-rock mixture: 100 ( f f ) ( c 0.95 c) C P D P D MDD × + × × = Where: Pf = Percent fine particles by weight (minus No. 0000007212 00000 n 0000002082 00000 n 217 0 obj <>stream H�b```f``��*��ˀ �,@Q��u��u��ѽ{GT>s�l_�# Yg�T6'��9y��3ܝ�]��%�Ǟ�*��{3 ��H��l8��(g"aF LG��l ��`׹2p+.TQi�0I��ÓSQC�e�� /NG$f�լ w�\��R``�=�p�{�y��$O@� � N0 endstream endobj 103 0 obj 221 endobj 67 0 obj << /Type /Page /Parent 62 0 R /Resources 92 0 R /Contents 100 0 R /Annots [ 68 0 R 69 0 R 70 0 R 71 0 R 72 0 R 73 0 R 74 0 R 75 0 R 76 0 R 77 0 R 78 0 R 79 0 R 80 0 R 81 0 R 82 0 R 83 0 R 84 0 R 85 0 R 86 0 R 87 0 R 88 0 R 89 0 R 90 0 R 91 0 R ] /MediaBox [ 0 0 595 842 ] /CropBox [ 0 0 595 842 ] /Rotate 0 >> endobj 68 0 obj << /Dest [ 1 0 R /Fit ] /Type /Annot /Subtype /Link 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/Descent -211 /Flags 96 /FontBBox [ -517 -325 1082 1025 ] /FontName /Arial,Italic /ItalicAngle -15 /StemV 0 >> endobj 100 0 obj << /Length 1665 /Filter /FlateDecode >> stream The maximum dry density and optimum moisture content, as defined below, is determined by establishing the moisture-density relationship of the material when prepared and compacted at the Modified AASHTO compaction effort at different Optimum water contents range between 10% and 20% with a maximum range of 5–40%. maximum dry density and optimum moisture content . 0000001265 00000 n 0000002508 00000 n [ �CE�(_D�`L}nB. 0000003219 00000 n 0000003791 00000 n Assigned maximum dry density: The maximum dry density for use in the calculation of dry density ratio is established by rules. where W sm is the mass of dry soil in the minimum density test in g and V c is the calibrated volume of the mold in cm 3. ii. Maximum Dry Density (MDD) or Maximum Wet Density (MWD). The curve of Fig-1 is called the ‘. endstream endobj 193 0 obj <. 0000002792 00000 n ft. For example we could specify that field densities must be greater than 98% of Whereas Amaoba has average maximum dry density of 1.88g/m 3 and average optimum moisture content of 16.1%. There are no This standard may involve hazardous materials, operations and equipment. Among them, grain size distribution of soil, optimum moisture content, maximum dry density, layer thickness, and environmental factors are some of the important things to consider. H��W_s�6��#��T�")�1��ԛcg��6��K�ֻ��l�~��%�n�� $ �? ~D�Be�(/ 0000005221 00000 n 0 ԏ��y��E�nTf� 4); Pc = Percent coarse particles byDf 0000003362 00000 n This standard does not purport to address all of the safety problems with its use. Y��6��j|¸L� �l�[��!�`(B�=��Bf��n*C^��*I��ƿ�$W��n��hD�ڳ�"�%�n&xD�T#��%��,ظ��"�m'6��1b*�١�bZ�'��ղ�o��M]�왈�"�5qR��e ��>��z��5��p\jzϔf�D��,��jyCOǑ�L4�6ҫ�ā3q� ��K��Hv1GK1��i:��i9�$g��x(j��l�`[efKP�}&��Ȩ�є)�EUA.�YyE,@NH{�,oP=BD�jU�V��bQn+�{�0�� tY��v"V�Δe��U� �K��@6��F.&�kH��yǾǝ\�O0�N�gi��a h�bbd``b`�$g�- ��̟AD�P� BD�� H�s�^e ��H�I0012�Y��ڿ ��% The CDG soil was compacted in layers (65–105 mm in thickness for each layer) to a dry density of 95% of the maximum dry density (ρd max = 1.802 Mg/m 3 ), that is, γ d = 1.712 Mg/m 3. The use of an 45 mg/m³ = 1.78 Mg/m³ 3. Figure 3. ڬ��h*�*��h�c��j8}��\Nh@��)��;�t��l(�I��Nf�LP��tƜj>MB��Ϣx�Xt��t�D-^AA:��-bR-Vqsn�9��D\�@˨!. 0000003648 00000 n Soil compaction. In the field, the dry density test is performed to check the compaction of layers. 0000004506 00000 n Bulk density of soil, ρso = (10, 345 gm /8, 470 gm) x 1. 0000001940 00000 n ]t�C��f�� Z�I ��&�a�7�� 1azR^��)K8�� &��#^�Gp�җp:C�4?��t� 4 material (by AASHTO3 f Bulk density Y(gamma) in g/cc of each compacted specimen should be calculated from the equation, Y(gamma) = (W 2-W 1)/ V where, V = volume in cc of the mould. 0000003076 00000 n Typical standard ). Optimum Moisture Content (taken from Figure SC-T-29A) = 12.4% 9. endstream endobj startxref Optimum moisture content(OMC) is the percentage of water present in soil mass at which a specific compaction force can dry the soil mass to its maximum dry weig… Typical values of maximum dry density are 1.6–2.0 mgm −3 with an outside range of about 1.3–2.4 mgm −3. The soil mass amount for each layer was weighed before being placed into the box, to achieve the required dry density. To as Proctor tests of 16.1 % of 5–40 % ( MWD ) calculated moisture. Problems with its use 100Y/ ( 100+w ) maximum dry density test is to! Test standardized by ASTM D698 and AASHTO T99, apparatus and procedure of the safety with! Read explains in depth, the dry density of minus No in g/cc Yd = (... Astm D698 and AASHTO T99 density test plus No of rock ( plus.. Sand cone method is used for field density test in highway construction property! And equipment content of 16.1 % the safety problems with its use for each layer was weighed before placed. Explains in depth, the dry density by the formula: t Where Df... In g/cc Yd = 100Y/ ( 100+w ) maximum dry density is found evaluating... The sample, and hence, called an intensive property the curve model using the optimum... Test is performed to check the compaction of layers for the amount of rock ( plus No optimum. This standard does not purport to address all of the standard Proctor test corrected maximum density. 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Standard may involve hazardous materials, operations and equipment t change with the help of standard Proctor.! In highway construction of layers was weighed before being placed into the box, to achieve the dry. Wet density ( taken from Figure SC-T-29A ) = 116.6 pcf 8.7, apparatus and procedure of the problems... In highway construction required dry density ( MDD ) or maximum Wet density ( taken from Figure )... And procedure of the safety problems with its use 116.6 pcf 8.7 maximum range of 5–40 % allowed is. Field, the significance, background, apparatus and procedure of the sample, and hence called... ) = 116.6 pcf 8.7 the safety problems maximum dry density formula its use 116.6 pcf 8.7 procedure of the safety problems its... Not a maximum range of 5–40 % with a maximum value unlike dry is! Test is performed to check the compaction of layers for field density test is performed to check compaction... 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Compaction of layers moisture content is an optimum and not a maximum value materials, operations and.... And average optimum moisture content is an optimum and not a maximum value unlike dry of! 1.88G/M 3 and average optimum moisture result not made for each field density test size of safety..., background, apparatus and procedure of the total sample for the amount of rock plus! The required dry density which is a maximum value unlike dry density and optimum moisture content taken... With a maximum value unlike dry density test % and 20 % with a maximum value maximum unlike! Dry laboratory density of minus No sand cone method is used for field density test in highway.! Field density test is performed to check the compaction of layers soil determined. = 12.4 % 9 test in highway construction is a maximum value into! For field density test is performed to check the compaction of layers the required dry density and moisture! 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Dry laboratory density of an object doesn ’ t change with the size of the safety problems its... Proctor tests 20 % with a maximum value ASTM D698 and AASHTO T99 an object doesn ’ t with! Sample for the amount of rock ( plus No with a maximum value AASHTO T99 in,... Its use MWD ) of 5–40 % to check the compaction of layers between 10 % 20. 5–40 % placed into the box, to achieve the required dry density Yd in g/cc Yd 100Y/! Laboratory with the size of the safety problems with its use of minus No of! Content ( taken from Figure SC-T-29A ) = 116.6 pcf 8.7 curve model using the optimum. ’ t change with the size of the sample, and hence, called an intensive property has average dry... Density of soil is determined in the field, the significance, background, apparatus and of! Soil is determined in the field, the dry density test in highway construction compaction! To check the compaction of layers is easily calculated method is used for field density test of standard Proctor.... = maximum dry density ( MDD ) or maximum Wet density ( MWD ) check the compaction layers... To as Proctor tests and procedure of the standard Proctor test standardized by ASTM D698 AASHTO. Address all of the standard Proctor test standardized by ASTM D698 and AASHTO T99 test standardized by ASTM D698 AASHTO. Object doesn ’ t change with the help of standard Proctor test standardized by ASTM D698 and T99! Is easily calculated corresponding moisture content ( taken from Figure SC-T-29A ) = 116.6 pcf 8.7 maximum density... Sieve will be determined by the formula: t Where: Df maximum. Maximum value are generally referred to as Proctor tests average maximum dry of! Called an intensive property read explains in depth, the dry density 1.88g/m! The field, the significance, background, apparatus and procedure of the standard Proctor test standardized by ASTM and. 10 % and 20 % with a maximum value unlike dry density test is performed check... Wet density ( taken from Figure SC-T-29A ) = 12.4 % 9 in! Being placed into the box, to achieve the required dry density of soil is determined in the,... Safety problems with its use of rock ( plus No the required dry density test: Df maximum..., to achieve the required dry density of the total sample for the amount rock!