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Quality Control - In-house Laboratory //
Quick Mix Beton L.L.C has set a full fledged in-house laboratory at the DIC Plant site with all modern state of the art equipments to maintain the quality of the product throughout the production and supply process. The quality control measures are based on Quick Mix Beton's Quality Control Plan and Procedure. From the quality of the raw materials received to the final product ( fresh concrete, hardened concrete and supplied product samples from the project sites) are continuously monitored and under various control process. This helps to procure the highest quality Raw Materials, production and supply of homogenous and consistent quality products to the customers.

The in-house quality control measures are as follows (quality control / inspection & test plan):

AGGREGATES

Item No TYPE OF MATERIALS & TYPE OF TEST QMB-DIC Permissible Limits Frequency of Testing
A AGGREGATES Applicable Standard Specification & Test Method Fine Aggregates Coarse Aggregates QMB-DIC In House Laboratory Independent Testing Laboratory
01 Preliminary Inspection Ocular (visual) No contamination and oversize Each Load -
02 Moisture Content BS 812 Part 109 N S L N S L Daily -
03 Sieve Analysis (Grading) BS 812 Part 103.1 / BS EN 933-1 / ASTM C 136 Standard - BS 882 Table 4 Standard - BS 882 Table 3 Weekly Every 6 months
04 Dust Content (Material Finer than 75 μm Sieve) BS EN 933 / ASTM C 117 & C 136 Natural Sand / Washed Sand – 3.0% max. 1.0% max. Weekly Every 6 months
05 Particle Density (Specific Gravity) BS 812 Part 2 / BS EN 1097-6 / ASTM C 127 & C 128 2.60 Mg/m3 min. 2.60 Mg/m3 min. Fortnightly Every 6 months
06 Water Absorption BS 812 Part 2 / BS EN 1097-6 / ASTM C 127 & C 128 2.5% max. 1.5% max. Fortnightly Every 6 months
07 Bulk Density Test (Uncompacted / Compacted) BS 812 Part 2 N S L N S L Weekly Every 6 months
08 Clay Lumps & Friable Particles ASTM C 142 1.0% max. 1.0% max. Weekly Every 6 months
09 Flakiness Index BS 812 Part 105.1 N R 25.0% max. Weekly Every 6 months
10 Elongation Index BS 812 Part 105.2 N R 25.0% max. Weekly Every 6 months
11 Aggregate Crushing Value BS 812 Part 110 N R 25.0% max. Weekly Every 6 months
12 Ten Percent Fines Value BS 812 Part 111 N R 100 KN min Weekly Every 6 months
13 Aggregate Impact Value BS 812 Part 112 / BS EN 1097-2 N R 25.0% max. Weekly Every 6 months
14 Los Angeles Abrasion Value ASTM C 131 / BS EN 1097-2 N R 25.0% max. - Every 6 months
15 Shell Content BS 812 Part 106 / BS EN 933-7 N R Nil - Every 6 months
16 Lightweight Pieces ASTM C 123 Nil Nil Weekly Every 6 months
17 Soundness (Sodium/Magnesium) ASTM C 88 Natural Sand – 15.0% max. 10.0% max. - Every 6 months
      Crushed Washed Sand - 15% max.      
18 Acid Soluble Sulphate Content BS 812 Part 118 / BS EN 1744 0.4% max. 0.4% max. - Every 6 months
19 Acid Soluble Chloride Content BS 812 Part 117 / BS EN 1744 0.03% max. 0.06% max. - Every 6 months
20 Organic Impurities ASTM C 40 Lighter than Reference or Absent Lighter than Reference or Absent - Every 6 months
21 Sand Equivalent ASTM D 2419 / BS EN 933 60.0% min. N R Weekly Every 6 months
22 Potential Alkaline Reactivity ASTM C 289 Innocuous Innocuous - Every 6 months
23 Aggregate Drying Shrinkage BS 812 Part 120 / BS EN 1367-4 0.075% max. - Every 6 months
24 Petrographic Analysis BS 812 – 104 N S L N S L - 1 Time Per Source

Water

Item No TYPE OF MATERIALS & TYPE OF TEST QMB-DIC Permissible Limits Frequency of Testing
B Water Applicable Standard Specification & Test Method Fine Aggregates Coarse Aggregates QMB-DIC In House Laboratory Independent Testing Laboratory
01 Chloride Content (Cl) BS 3148 / ASTM C 94 BS 1377 Part 3 / ASTM D 512 – 04 200 ppm max - Every 6 months
02 Sulphate Content (SO3) BS 3148 / ASTM C 94 BS 1377 Part 3 / ASTM D 516 - 07 500 ppm max. - Every 6 months
03 Alkali Carbonates & Bicarbonates BS 3148 / ASTM C 94 BS 2690 Part 109 / ASTM D 513 500 ppm max. - Every 6 months
04 Total Dissolved Solids (TDS) BS 3148 / ASTM C 94 BS 1377 Part 3 2000 ppm max. - Every 6 months
05 pH Value BS 3148 / ASTM C 94 BS 2690 Part 5 / ASTM D 1293 - 99 7.0 – 9.0 - Every 6 months

CEMENT / CEMENTITIOUS MATERIALS

Item No TYPE OF MATERIALS & TYPE OF TEST QMB-DIC Permissible Limits Frequency of Testing
C CEMENT / CEMENTITIOUS MATERIALS Applicable Standard Specification & Test Method Fine Aggregates Coarse Aggregates QMB-DIC In House Laboratory Independent Testing Laboratory
01 Physical & Chemical Analysis (OPC / MSRC / SRC / GGBS / MS / PFA) ASTM C 150 / BS 12 / BSEN 197 / BS 4027 / BS 6699 / ASTM C 1240 / BS 4550 & 6699 / ASTM 618 Manufacturer’s Test Certificate Provided (Applicable Standard) As required Every 6 months

CHEMICAL ADMIXTURES

Item No TYPE OF MATERIALS & TYPE OF TEST QMB-DIC Permissible Limits Frequency of Testing
D CHEMICAL ADMIXTURES Applicable Standard Specification & Test Method Fine Aggregates Coarse Aggregates QMB-DIC In House Laboratory Independent Testing Laboratory
01 Physical & Chemical Properties of Chemical Admixtures for concrete BSEN 934-2, BS 5075 Parts 1, 2 & 3, ASTM C 4 94, 1017 (Type 1 & 2) Manufacturer’s Test Certificate Provided (Certificate of Conformity) As required Every 6 months

FRESHLY MIXED CONCRETE

Item No TYPE OF MATERIALS & TYPE OF TEST QMB-DIC Permissible Limits Frequency of Testing
E FRESHLY MIXED CONCRETE Applicable Standard Specification & Test Method Fine Aggregates Coarse Aggregates QMB-DIC In House Laboratory Independent Testing Laboratory
01 Concrete Temperature ASTM C 1064 / BS 5328 : Part 4 Clause 3.4 As per project requirement Each Load of Concrete in Transit Mixer As per project requirement
02 Slump (Workability) Checking ASTM C 143 / BS 1881 : Part 102 / BS EN 12350-2 As per project requirement Each Load of Concrete in Transit Mixer As per project requirement
03 Plastic Density (Unit Weight) ASTM C 138 / BS 1881 : Part 107 / BSEN 12350-6 As per project requirement As required As per project requirement
04 Air Content ASTM C 231 / BS 1881 Part 106 / BSEN 12350-7 As per project requirement As required As per project requirement
05 Cube Making BS 1881 Part 108 / BSEN 12390-2 As per project requirement Daily As per project requirement
06 Laboratory / Plant Trial Mixes ASTM C 192 / BS 1881 : Part 125 As per project requirement As required As per project requirement

HARDENED CONCRETE / DURABILITY

Item No TYPE OF MATERIALS & TYPE OF TEST QMB-DIC Permissible Limits Frequency of Testing
F HARDENED CONCRETE / DURABILITY Applicable Standard Specification & Test Method Fine Aggregates Coarse Aggregates QMB-DIC In House Laboratory Independent Testing Laboratory
01 Compressive Strength BS 1881 Part 116 / BSEN 12390-3 As per project requirement Daily As per project requirement
02 Chloride Permeability ASTM C 1202 / AASHTO T 277 As per project requirement As required As per project requirement
03 Water Permeability DIN 1048 Part 5 : 7.6 / BSEN 12390-8 As per project requirement As required As per project requirement
04 Water Absorption BS 1881 Part 122 As per project requirement As required As per project requirement
05 Initial Surface Absorption BS 1881 Part 208 As per project requirement As required As per project requirement
06 Porosity RILEM CPC 11.3 As per project requirement - As per project requirement
07 Chloride & Sulphate Content BS 1881:Part 124 As per project requirement Every New Mix Design Every New Mix Design