Construction Materials and Testing CE23 DPWH Standards in testing DPWH MINIMUM REQUIREMENTS FOR SUBMISSION OF SAMPLES MATERIALS 1. Cement MNIMUM TESTING REQUIREMENTS 1 sample per 2000 bags MINIMUM QUANTITY/VOLUME OF MATERIALS FOR EACH SAMPLE SUBMITTED 10 kg 10 kg DPWH MINIMUM REQUIREMENTS FOR SUBMISSION OF SAMPLES MATERIALS 2. Asphaltic material MNIMUM TESTING REQUIREMENTS 1 sample per 40T or 200 drums MINIMUM QUANTITY/VOLUME OF MATERIALS FOR EACH SAMPLE SUBMITTED 5L 5L DPWH MINIMUM REQUIREMENTS FOR SUBMISSION OF SAMPLES MATERIALS 3. Aspahlt mix MNIMUM TESTING REQUIREMENTS 1 sample per 130T MINIMUM QUANTITY/VOLUME OF MATERIALS FOR EACH SAMPLE SUBMITTED 20 kg 20 kg DPWH MINIMUM REQUIREMENTS FOR SUBMISSION OF SAMPLES MATERIALS 4. Aggregates a. coarse aggregate b. fine aggregate MNIMUM TESTING REQUIREMENTS MINIMUM QUANTITY/VOLUME OF MATERIALS FOR EACH SAMPLE SUBMITTED 1 sample per 1,500 m3 70 kg 50 kg 70 kg 50 kg DPWH MINIMUM REQUIREMENTS FOR SUBMISSION OF SAMPLES MATERIALS 5. Soil aggregates a. Classification b. Routinary tests c. MDR test and CBR MNIMUM TESTING REQUIREMENTS MINIMUM QUANTITY/VOLUME OF MATERIALS FOR EACH SAMPLE SUBMITTED 1 sample per 1,500 m3 20 kg 50 kg 50 kg 20 kg 50 kg 50 kg DPWH MINIMUM REQUIREMENTS FOR SUBMISSION OF SAMPLES MATERIALS 6. Non – Reinforced Concrete Pipes MNIMUM TESTING REQUIREMENTS 2 pipes min./0.5% of no. of pipes MINIMUM QUANTITY/VOLUME OF MATERIALS FOR EACH SAMPLE SUBMITTED 2 pipes 2 pipes DPWH MINIMUM REQUIREMENTS FOR SUBMISSION OF SAMPLES MATERIALS 7. Reinforced Concrete Pipes MNIMUM TESTING REQUIREMENTS 1 sample per 50 pipes or 2% of # of pipes MINIMUM QUANTITY/VOLUME OF MATERIALS FOR EACH SAMPLE SUBMITTED 1 pipe (1 m length) 1 pipe (1m length) DPWH MINIMUM REQUIREMENTS FOR SUBMISSION OF SAMPLES MATERIALS 8.Steel pipe (galvanized) MNIMUM TESTING REQUIREMENTS 1 sample per 500 lengths MINIMUM QUANTITY/VOLUME OF MATERIALS FOR EACH SAMPLE SUBMITTED 2 pcs Of 100 mm long taken from both ends w/ thread 2 pcs (100mm length) DPWH MINIMUM REQUIREMENTS FOR SUBMISSION OF SAMPLES MATERIALS 9. Concrete hollow blocks (CHB) a. strength b. moisture content MNIMUM TESTING REQUIREMENTS MINIMUM QUANTITY/VOLUME OF MATERIALS FOR EACH SAMPLE SUBMITTED 1 sample per 10,000 units 3 units 3 units 3 units DPWH MINIMUM REQUIREMENTS FOR SUBMISSION OF SAMPLES MATERIALS 10. Steel bar MNIMUM TESTING REQUIREMENTS 1 sample per 10T MINIMUM QUANTITY/VOLUME OF MATERIALS FOR EACH SAMPLE SUBMITTED 1m 1 meter DPWH MINIMUM REQUIREMENTS FOR SUBMISSION OF SAMPLES MATERIALS 11. Steel sheet (galvanized) MNIMUM TESTING REQUIREMENTS 1 sample per 100 sheets MINIMUM QUANTITY/VOLUME OF MATERIALS FOR EACH SAMPLE SUBMITTED 3 pcs 60mm x 60mm 3 pcs (60mm x 60mm) DPWH MINIMUM REQUIREMENTS FOR SUBMISSION OF SAMPLES MATERIALS 12. Wire strand MNIMUM TESTING REQUIREMENTS 1 sample per 20T MINIMUM QUANTITY/VOLUME OF MATERIALS FOR EACH SAMPLE SUBMITTED 2m 2 meters DPWH MINIMUM REQUIREMENTS FOR SUBMISSION OF SAMPLES MATERIALS 13. Gabion MNIMUM TESTING REQUIREMENTS MINIMUM QUANTITY/VOLUME OF MATERIALS FOR EACH SAMPLE SUBMITTED 1m x 2m 1m x 2m DPWH MINIMUM REQUIREMENTS FOR SUBMISSION OF SAMPLES MATERIALS 14. Paints MNIMUM TESTING REQUIREMENTS 1 sample per 100 cans MINIMUM QUANTITY/VOLUME OF MATERIALS FOR EACH SAMPLE SUBMITTED 1 - 4L can 1 – 4liters DPWH MINIMUM REQUIREMENTS FOR SUBMISSION OF SAMPLES MATERIALS 15. Concrete cylinder MNIMUM TESTING REQUIREMENTS 1 sample per 75 m3 MINIMUM QUANTITY/VOLUME OF MATERIALS FOR EACH SAMPLE SUBMITTED 1 set (3 cylinders) 1 set (3 cylinders) DPWH MINIMUM REQUIREMENTS FOR SUBMISSION OF SAMPLES MATERIALS 16. Concrete beam MNIMUM TESTING REQUIREMENTS 1 sample per 75 m3 or 1 day pouring MINIMUM QUANTITY/VOLUME OF MATERIALS FOR EACH SAMPLE SUBMITTED 1 set (3 beams) 1 set (3 beams) DPWH MINIMUM REQUIREMENTS FOR SUBMISSION OF SAMPLES MATERIALS MNIMUM TESTING REQUIREMENTS 17. Joint – filler (pre – molded) 18. Curing compound MINIMUM QUANTITY/VOLUME OF MATERIALS FOR EACH SAMPLE SUBMITTED 1 – 400mm x 400mm 1L 19. Concrete core 5 holes for every km/lane 20. Asphalt core 1 core for every 100m DPWH COMPOSITION AND STRENGTH OF CONCRETE FOR USE IN STRUCTURE Class of concrete Minimum cement content per cu. m kg (bags) Maximum water – cement ratio kg/kg Consistency range in slump mm (inch) A 360 (9) 0.53 50 -100 (2 – 4) B 320 (8.5) 0.58 50 -100 (2 – 4) C 380 (9.5) 0.55 50 -100 (2 – 4) P 440 (11) 0.49 Seal 380 (9.5) 0.58 100 max ( 4 max) 100 – 200 (4 – 8) Minimum Designated compressive size of coarse strength of aggregate 150mm x 300mm square concrete opening – cylinder @ 28 days std. mm MN/m2 (psi) 37. 5 – 4.75 (1 20.7 (3000) ½ - No. 4) 50.0 – 4.75 (2 16.5 (2400) - No. 4) 12. 5 – 4.75 20.7 (3000) (½ - No. 4) 19.0 – 4.75 37. 7 (5000) (3/4 - No. 4) 25.0 – 4.75 (1 20.7 (3000) - No. 4) DPWH PAYMENT ADJUSTMENT FOR PAVEMENT WITH DEFICIENCY IN STRENGTH Deficiency in strength of concrete pavement Percent (%) Less than 5 5 to less than 10 10 to less than 15 15 to less than 20 20 to less than 25 25 or more Percent (%) of contract price allowed 100 80 70 60 50 0 DPWH PAYMENT ADJUSTMENT FOR PAVEMENT WITH DEFICIENCY IN THICKNESS Deficiency in the average thickness per lot(mm) 0–5 Percent (%) of contract price per lot 100 6 – 10 95 11 – 15 85 16 – 20 70 21 – 25 50 more than 25 removed and replaced (no payment) DPWH COMMON LABORATORY TESTS Kind of material Type of test Cement Coarse aggregate Physical and chemical Grading Specific gravity Absorption Abrasion Unit weight Test duration per sample (min. # of days) 8 3 3 3 1 1 Fine aggregate Grading Specific gravity Absorption Unit weight 3 3 3 1 Soil aggregates mixture (subbase, base and surfaces courses Grading 3 Liquid limit Plastic limit Compaction CBR Abrasion 3 3 3 7 1 DPWH COMMON LABORATORY TESTS Kind of material Type of test Asphalt Paint Physical Physical and chemical Test duration per sample (min. # of days) 4 4 Concrete cylinder Compressive 1 Concrete beam Flexural 1 Concrete core Cutting of sample 1 DPWH REMOVAL OF FORMS Scope of work Centering under girders, beams, frames or arches Floors slabs Walls Columns Sides of beams and all other vertical surfaces Minimum time Minimum % of design strength 14 days 80% 14 days 1 day 2 days 70% 70% 70% 1 day 70% DPWH MINIMUM LAP FOR SPLICING GRADE 40 GRADE 60 Tension 24 times bar Ø 36 times bar Ø Compression 20 times bar Ø 24 times bar Ø References DPWH Standard Specifications for Public Works and Highway (2004 edition), Volume II Youtube Links for Testing 1. Sieve Analysis: https://www.youtube.com/watch?v=3Xqq1cxhD-s 2. Liquid and Plastic limits: https://www.youtube.com/watch?v=EcXJ961qjGA 3. Compressive Strength for the concrete: https://www.youtube.com/watch?v=6ferJ1OncnQ 4. Hydrometer Test: https://www.youtube.com/watch?v=Yi8wdl5cN9Y