JGJ/T 308-2013 English PDF (JGJT308-2013)

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JGJ/T 308-2013: Technical specification liar application of phosphorous slag powder concrete
JGJ/T 308-2013
JGJ
INDUSTRY STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC
P JGJ/T 308-2013
Filing No.: J 1636-2013
Technical specification for application of phosphorous slag
powder concrete
ISSUED ON: JULY 26, 2013
IMPLEMENTED ON: FEBRUARY 01, 2014
Issued by: Ministry of Housing and Urban-Rural Development of PRC
Technical specification for application of phosphorous slag
powder concrete
1 General provisions
1.0.1 This Specification is formulated to standardize the application of phosphorus slag
powder concrete, make full use of industrial waste, save resources, protect the
environment, achieve advanced technology, economic rationality, ensure project quality.
1.0.2 This Specification is applicable to the mix proportion design, construction, quality
inspection, acceptance of phosphorus slag powder concrete.
1.0.3 In addition to complying with this Specification, the application of phosphorus
slag powder concrete shall also comply with the provisions of the current relevant
national standards.
2 Terms and symbols
2.1 Terms
2.1.1 Granulated electric furnace phosphorus slag powder
The molten material with calcium silicate as the main component, which is obtained
when yellow phosphorus is produced by electric furnace method, is quenched into
granules and ground into powder, referred to as phosphorus slag powder.
2.1.2 Phosphorous slag powder concrete
Concrete which uses phosphorus slag powder as the main admixture.
2.1.3 Cementitious material
The general term for cement and mineral admixtures in concrete.
2.1.4 Percentage of phosphorous slag powder
The percentage of phosphorous slag powder mass in the total mass of cementitious
materials.
2.2 Symbols
mb - Total amount of cementitious materials in each cubic meter of concrete;
mc - Cement content in each cubic meter of concrete with mineral admixtures;
mfp - Phosphorus slag powder content in each cubic meter of concrete;
βt - Percentage of cement replaced by phosphorus slag powder.
3 Raw materials
3.0.1 Portland cement and ordinary Portland cement should be used for cement. Slag
Portland cement, pozzolanic Portland cement, fly ash Portland cement, composite
Portland cement may also be used. Cement shall comply with the provisions of the
current national standard “Common Portland cement” GB 175. When other types of
cement are used, they shall meet the requirements of the corresponding standards.
3.0.2 Coarse aggregate and fine aggregate shall comply with the provisions of the
current industry standard “Standard for technical requirements and test method of sand
and crushed stone (or gravel) for ordinary concrete” JGJ 52.
3.0.3 Phosphorus slag powder shall comply with the provisions of the current industry
standard “Granulated electric furnace phosphorous slag powder used for concrete” JG/T
317.
3.0.4 The performance index of granulated blast furnace slag powder shall comply with
the provisions of the current national standard “Ground granulated blast furnace slag
used for cement and concrete” GB/T 18046; the performance index of fly ash shall
comply with the provisions of the current national standard “Fly ash used for cement
and concrete” GB/T 1596; the performance index of silica fume shall comply with the
provisions of the current national standard “Silica fume for cement mortar and concrete”
GB/T 27690. When other admixtures are used, the performance index shall also comply
with the provisions of the current relevant national standards and shall be verified by
tests.
3.0.5 Admixtures shall comply with the provisions of the current national standards
"Concrete admixtures" GB 8076 and “Code for concrete admixture application” GB
50119. When other admixtures are used, they shall be verified by tests and the
performance shall meet the provisions of the current relevant standards.
3.0.6 The water used for concrete mixing shall comply with the provisions of the current
industry standard “Standard of water for concrete” JGJ 63.
4 Phosphorus slag powder concrete performance
4.1 Technical requirements of mixtures
4.1.1 Phosphorus slag powder concrete mixtures shall have good fluidity, cohesiveness,
water retention; they shall not segregate or bleed.
4.1.2 The performance of phosphorus slag powder concrete mixtures shall meet the
requirements of engineering design and construction. The consistency grading and
allowable deviation of concrete mixtures shall comply with the provisions of the current
national standard “Standard for quality control of concrete” GB 50164. The test method
of concrete mixture performance shall comply with the provisions of the current
national standard “Standard for test method of performance on ordinary fresh concrete”
GB/T 50080.
4.1.3 The slump loss of concrete mixtures over time shall not affect the normal
construction of concrete. The slump loss of pumped phosphorus slag powder concrete
over time should not be greater than 30 mm/h.
4.1.4 The setting time of phosphorus slag powder concrete mixtures shall meet the
requirements of engineering construction and concrete performance.
4.1.5 The total alkali content of phosphorus slag powder concrete mixture shall comply
with the provisions of the current national standard “Technical code for prevention of
alkali-aggregate reaction in concrete” GB/T 50733. The alkali content should be
measured and calculated in accordance with the provisions of the current industry
standard “Specification for mix proportion design of ordinary concrete” JGJ 55. The
alkali content of phosphorus slag powder can be taken as 1/2 of the measured value.
4.1.6 The maximum water-soluble chloride ion content of phosphorus slag powder
concrete mixture shall comply with the requirements of Table 4.1.6. The water-soluble
chloride ion content of phosphorus slag powder concrete mixture should be measured
according to the rapid determination method of chloride ion content of concrete mixture
in the current industry standard “Testing code of concrete for port and waterwork
engineering” JTJ 270.
Where:
mc - The amount of cement per cubic meter of mineral admixture concrete (kg/m3);
mb - The total amount of cementitious materials per cubic meter of concrete (kg/m3);
βt - The percentage of cement replaced by phosphorus slag powder (%).
5.2.3 The amount of phosphorus slag powder per cubic meter of concrete, mfp, can be
calculated as follows:
Where:
mfp - The amount of phosphorus slag powder per cubic meter of concrete (kg/m3);
mb - The total amount of cementitious materials per cubic meter of concrete (kg/m3);
βt - The percentage of cement replaced by phosphorus slag powder (%).
5.2.4 The minimum amount of cementitious materials and the maximum water-cement
ratio shall comply with the provisions of the current industry standard “Specification
for mix proportion design of ordinary concrete” JGJ 55.
5.2.5 The amount of admixture shall be calculated as a percentage of the total amount
of cementitious materials.
5.2.6 The construction mix proportion of phosphorus slag powder concrete shall be
adjusted according to the provisions of the current industry standard “Specification for
mix proportion design of ordinary concrete” JGJ 55; it is used after verification.
6 Production and construction of phosphorus slag powder
concrete
6.1 General requirements
6.1.1 Before construction, the construction unit shall prepare a technical plan for the
construction of phosphorus slag powder concrete, based on desig...